Šiler-Marinković, Slavica

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Authority KeyName Variants
orcid::0000-0003-2180-852X
  • Šiler-Marinković, Slavica (68)
  • Šiler-Marinković, Slavica S. (3)

Author's Bibliography

Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination

Buntić, Aneta; Milić, Marija; Antonović, Dušan; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Desalination Publ, Hopkinton, 2019)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Milić, Marija
AU  - Antonović, Dušan
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4129
AB  - The use of the microwave-activated sugar beet pulp as an alternative adsorbent material in combination with biological processes has been applied for the colored wastewater treatment. The maximum adsorption capacity of the crystal violet dye has been achieved relatively fast, during 315 s, with no dependence of the pH, when the adsorbent mass was 15 and 0.2 g/L of the initial dye concentration. The adsorption equilibrium data fully complied with the Temkin isotherm. The afterward biological decontamination of the adsorbed dye was related to the biodegradable potential of Streptomyces microflavus CKS6 cells. The microorganism revealed strong affinity toward the dye and minimal nutritional requirements for the metabolic activity expressions. Total dye decomposition occurred after 9 h, whereby lignin peroxidase enzyme has been recognized to be mainly involved in the process. According to the phytotoxicity analysis, no harmful residues were found in the decolorized working medium.
PB  - Desalination Publ, Hopkinton
T2  - Desalination and Water Treatment
T1  - Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination
EP  - 382
SP  - 372
VL  - 169
DO  - 10.5004/dwt.2019.24677
ER  - 
@article{
author = "Buntić, Aneta and Milić, Marija and Antonović, Dušan and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2019",
abstract = "The use of the microwave-activated sugar beet pulp as an alternative adsorbent material in combination with biological processes has been applied for the colored wastewater treatment. The maximum adsorption capacity of the crystal violet dye has been achieved relatively fast, during 315 s, with no dependence of the pH, when the adsorbent mass was 15 and 0.2 g/L of the initial dye concentration. The adsorption equilibrium data fully complied with the Temkin isotherm. The afterward biological decontamination of the adsorbed dye was related to the biodegradable potential of Streptomyces microflavus CKS6 cells. The microorganism revealed strong affinity toward the dye and minimal nutritional requirements for the metabolic activity expressions. Total dye decomposition occurred after 9 h, whereby lignin peroxidase enzyme has been recognized to be mainly involved in the process. According to the phytotoxicity analysis, no harmful residues were found in the decolorized working medium.",
publisher = "Desalination Publ, Hopkinton",
journal = "Desalination and Water Treatment",
title = "Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination",
pages = "382-372",
volume = "169",
doi = "10.5004/dwt.2019.24677"
}
Buntić, A., Milić, M., Antonović, D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2019). Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination. in Desalination and Water Treatment
Desalination Publ, Hopkinton., 169, 372-382.
https://doi.org/10.5004/dwt.2019.24677
Buntić A, Milić M, Antonović D, Šiler-Marinković S, Dimitrijević-Branković S. Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination. in Desalination and Water Treatment. 2019;169:372-382.
doi:10.5004/dwt.2019.24677 .
Buntić, Aneta, Milić, Marija, Antonović, Dušan, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Implementation of integrated adsorption and biological process in wastewater treatment for permanent dye removal and its subsequent decontamination" in Desalination and Water Treatment, 169 (2019):372-382,
https://doi.org/10.5004/dwt.2019.24677 . .
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Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents

Buntić, Aneta; Pavlović, Marija; Antonović, Dušan; Pavlović, Vladimir; Vrucinić, Dragana; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Elsevier Science Bv, Amsterdam, 2018)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Pavlović, Marija
AU  - Antonović, Dušan
AU  - Pavlović, Vladimir
AU  - Vrucinić, Dragana
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3993
AB  - This study has explored the possibility to reuse the waste, spent coffee material for the cellulase enzyme immobilization. By the coffee surface modification with different activating agents, it was attempted to develop the convenient method for creation of a capable porous carrier for this purpose. Among the most common activating agents, glutaraldehyde, chlorine dioxide and hydrogen peroxide provided the most acceptable choice for the coffee surface modification. The changes that occurred on the coffee surface due to agents' treatment exposure were recorded by using of the FTIR spectra and SEM micrographs. The highest immobilization yield (55%) and immobilization efficiency (45%) were attained during 30 min of the treatment time, by employing of 30% chlorine dioxide aqueous solution within 6 mL/g activator/carrier ratio. The kinetic process was found to be predicted by the pseudo-second-order model. The cellulase immobilization onto the coffee surface provides an excellent base for increasing the enzyme availability to the substrate and enhancing the enzyme productivity, by offering the new perspectives to the industrial sector.
PB  - Elsevier Science Bv, Amsterdam
T2  - International Journal of Biological Macromolecules
T1  - Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents
EP  - 1863
SP  - 1856
VL  - 107
DO  - 10.1016/j.ijbiomac.2017.10.060
ER  - 
@article{
author = "Buntić, Aneta and Pavlović, Marija and Antonović, Dušan and Pavlović, Vladimir and Vrucinić, Dragana and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2018",
abstract = "This study has explored the possibility to reuse the waste, spent coffee material for the cellulase enzyme immobilization. By the coffee surface modification with different activating agents, it was attempted to develop the convenient method for creation of a capable porous carrier for this purpose. Among the most common activating agents, glutaraldehyde, chlorine dioxide and hydrogen peroxide provided the most acceptable choice for the coffee surface modification. The changes that occurred on the coffee surface due to agents' treatment exposure were recorded by using of the FTIR spectra and SEM micrographs. The highest immobilization yield (55%) and immobilization efficiency (45%) were attained during 30 min of the treatment time, by employing of 30% chlorine dioxide aqueous solution within 6 mL/g activator/carrier ratio. The kinetic process was found to be predicted by the pseudo-second-order model. The cellulase immobilization onto the coffee surface provides an excellent base for increasing the enzyme availability to the substrate and enhancing the enzyme productivity, by offering the new perspectives to the industrial sector.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "International Journal of Biological Macromolecules",
title = "Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents",
pages = "1863-1856",
volume = "107",
doi = "10.1016/j.ijbiomac.2017.10.060"
}
Buntić, A., Pavlović, M., Antonović, D., Pavlović, V., Vrucinić, D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2018). Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents. in International Journal of Biological Macromolecules
Elsevier Science Bv, Amsterdam., 107, 1856-1863.
https://doi.org/10.1016/j.ijbiomac.2017.10.060
Buntić A, Pavlović M, Antonović D, Pavlović V, Vrucinić D, Šiler-Marinković S, Dimitrijević-Branković S. Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents. in International Journal of Biological Macromolecules. 2018;107:1856-1863.
doi:10.1016/j.ijbiomac.2017.10.060 .
Buntić, Aneta, Pavlović, Marija, Antonović, Dušan, Pavlović, Vladimir, Vrucinić, Dragana, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Customizing the spent coffee for Trichoderma reesei cellulase immobilization by modification with activating agents" in International Journal of Biological Macromolecules, 107 (2018):1856-1863,
https://doi.org/10.1016/j.ijbiomac.2017.10.060 . .
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Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate

Miljković, Miona; Davidović, Slađana; Kralj, Slavko; Šiler-Marinković, Slavica; Rajilić-Stojanović, Mirjana; Dimitrijević-Branković, Suzana

(Savez hemijskih inženjera, Beograd, 2017)

TY  - JOUR
AU  - Miljković, Miona
AU  - Davidović, Slađana
AU  - Kralj, Slavko
AU  - Šiler-Marinković, Slavica
AU  - Rajilić-Stojanović, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3632
AB  - The production of dextransucrase (DS) by Leuconostoc mesenteroides T3, novel isolate from water kefir grain, was studied and optimized. Bacterial supernatant reached activity of 3.1 U/ml when the culture was grown at 23 degrees C and under static culture condition using classical Tsuchiya medium for DS production. The increase of sucrose concentration to 7% led to an increase of DS activity by 52% compared to the control. Medium with 2% beef extract and 1% yeast extract resulted in 4.52 U/ml, which was 47% higher than in the control (with 2% yeast extract). Finally, the increase of K2HPO4 concentration from 2 to 3% resulted in the increased enzyme activity by 28%. Enzyme purified by polyethylene glycol 400 fractionation displayed maximum activity at 30 degrees C and pH 5.4. Zymogram analysis confirmed the presence of DS of approximately 180 kDa. The addition of divalent cations Ca2+, Mg2+, Fe2+ and Co2+ led to a minor increase of DS activity, while the addition of Mn2+ was the most prominent with 73% increase. These findings classify dextransucrase from Leuconostoc mesenteroides T3 as promising candidate for production of dextran, which has numerous applications in various industries.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate
EP  - 360
IS  - 4
SP  - 351
VL  - 71
DO  - 10.2298/HEMIND160421046M
ER  - 
@article{
author = "Miljković, Miona and Davidović, Slađana and Kralj, Slavko and Šiler-Marinković, Slavica and Rajilić-Stojanović, Mirjana and Dimitrijević-Branković, Suzana",
year = "2017",
abstract = "The production of dextransucrase (DS) by Leuconostoc mesenteroides T3, novel isolate from water kefir grain, was studied and optimized. Bacterial supernatant reached activity of 3.1 U/ml when the culture was grown at 23 degrees C and under static culture condition using classical Tsuchiya medium for DS production. The increase of sucrose concentration to 7% led to an increase of DS activity by 52% compared to the control. Medium with 2% beef extract and 1% yeast extract resulted in 4.52 U/ml, which was 47% higher than in the control (with 2% yeast extract). Finally, the increase of K2HPO4 concentration from 2 to 3% resulted in the increased enzyme activity by 28%. Enzyme purified by polyethylene glycol 400 fractionation displayed maximum activity at 30 degrees C and pH 5.4. Zymogram analysis confirmed the presence of DS of approximately 180 kDa. The addition of divalent cations Ca2+, Mg2+, Fe2+ and Co2+ led to a minor increase of DS activity, while the addition of Mn2+ was the most prominent with 73% increase. These findings classify dextransucrase from Leuconostoc mesenteroides T3 as promising candidate for production of dextran, which has numerous applications in various industries.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate",
pages = "360-351",
number = "4",
volume = "71",
doi = "10.2298/HEMIND160421046M"
}
Miljković, M., Davidović, S., Kralj, S., Šiler-Marinković, S., Rajilić-Stojanović, M.,& Dimitrijević-Branković, S.. (2017). Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 71(4), 351-360.
https://doi.org/10.2298/HEMIND160421046M
Miljković M, Davidović S, Kralj S, Šiler-Marinković S, Rajilić-Stojanović M, Dimitrijević-Branković S. Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate. in Hemijska industrija. 2017;71(4):351-360.
doi:10.2298/HEMIND160421046M .
Miljković, Miona, Davidović, Slađana, Kralj, Slavko, Šiler-Marinković, Slavica, Rajilić-Stojanović, Mirjana, Dimitrijević-Branković, Suzana, "Characterization of dextransucrase from Leuconostoc mesenteroides T3, water kefir grains isolate" in Hemijska industrija, 71, no. 4 (2017):351-360,
https://doi.org/10.2298/HEMIND160421046M . .
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A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6

Buntić, Aneta; Pavlović, Marija D.; Antonović, Dušan; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Elsevier Sci Ltd, Oxford, 2017)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Pavlović, Marija D.
AU  - Antonović, Dušan
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3750
AB  - This study has investigated the biodegradable potential of the Streptomyces microflavus CKS6 growing microbial cells for the colored waste water treatment. The Crystal violet and Safranin T basic dyes have been employed as a model compounds for decolorization evaluation by exploring the correlation with the other rate-dependent environmental parameters. Through the measuring of color reduction by UV Vis spectroscopic monitoring analysis, the results revealed well operational properties of Streptomyces microflavus CKS6 for the successful refinement of dyes contaminate water solutions. Optimized process parameters were found to be apparently mild, involving the use of the reaction temperature of 27-30 degrees C and pH 6-7. With the lower dye concentrations, the decolorization efficiency was found to be more effective and rapid, wherein the 1 mg/L of Crystal violet was removed within the 2.5 h of the treatment time, while the solution with the same content of the Safranin T dye required 30 h. A possible mechanism for the working medium decolorization was accomplished in two consecutive steps, by the primarily dye adsorption onto the bacterial cells surface, followed to biodegradation by the active microbial enzymatic system, wherein the lignin peroxidase acts a notable role. The phytotoxicity analysis of the degradation products revealed less toxicity to the plants, compared to parental chemicals. In addition, the adaptation of individual dye optimized parameters was effectively implemented in the real waste water system containing the mixture of these two dyes. The overall results may postulate that Streptomyces microflavus CKS6 may be promising applicants for dye contaminated Water treatment.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Cleaner Production
T1  - A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6
EP  - 354
SP  - 347
VL  - 148
DO  - 10.1016/j.jclepro.2017.01.164
ER  - 
@article{
author = "Buntić, Aneta and Pavlović, Marija D. and Antonović, Dušan and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2017",
abstract = "This study has investigated the biodegradable potential of the Streptomyces microflavus CKS6 growing microbial cells for the colored waste water treatment. The Crystal violet and Safranin T basic dyes have been employed as a model compounds for decolorization evaluation by exploring the correlation with the other rate-dependent environmental parameters. Through the measuring of color reduction by UV Vis spectroscopic monitoring analysis, the results revealed well operational properties of Streptomyces microflavus CKS6 for the successful refinement of dyes contaminate water solutions. Optimized process parameters were found to be apparently mild, involving the use of the reaction temperature of 27-30 degrees C and pH 6-7. With the lower dye concentrations, the decolorization efficiency was found to be more effective and rapid, wherein the 1 mg/L of Crystal violet was removed within the 2.5 h of the treatment time, while the solution with the same content of the Safranin T dye required 30 h. A possible mechanism for the working medium decolorization was accomplished in two consecutive steps, by the primarily dye adsorption onto the bacterial cells surface, followed to biodegradation by the active microbial enzymatic system, wherein the lignin peroxidase acts a notable role. The phytotoxicity analysis of the degradation products revealed less toxicity to the plants, compared to parental chemicals. In addition, the adaptation of individual dye optimized parameters was effectively implemented in the real waste water system containing the mixture of these two dyes. The overall results may postulate that Streptomyces microflavus CKS6 may be promising applicants for dye contaminated Water treatment.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Cleaner Production",
title = "A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6",
pages = "354-347",
volume = "148",
doi = "10.1016/j.jclepro.2017.01.164"
}
Buntić, A., Pavlović, M. D., Antonović, D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2017). A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6. in Journal of Cleaner Production
Elsevier Sci Ltd, Oxford., 148, 347-354.
https://doi.org/10.1016/j.jclepro.2017.01.164
Buntić A, Pavlović MD, Antonović D, Šiler-Marinković S, Dimitrijević-Branković S. A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6. in Journal of Cleaner Production. 2017;148:347-354.
doi:10.1016/j.jclepro.2017.01.164 .
Buntić, Aneta, Pavlović, Marija D., Antonović, Dušan, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "A treatment of wastewater containing basic dyes by the use of new strain Streptomyces microflavus CKS6" in Journal of Cleaner Production, 148 (2017):347-354,
https://doi.org/10.1016/j.jclepro.2017.01.164 . .
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17
31

Antioxidant activity in different morphological fractions of some cereal grains

Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana; Ðorđević, Tijana M.

(Društvo za ishranu Srbije, Beograd, 2017)

TY  - JOUR
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
AU  - Ðorđević, Tijana M.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3521
AB  - The purpose of this study was to examine the antioxidant properties of 70% ethanolic extracts of cereal grains and their different morphological fractions. Wheat (Triticum durum L.), barley (Hordeum vulgare L.), rye (Secale cereale L.), and buckwheat (Fagopyrum esculentum) were used. The total phenolic content (TPC), determined by the Folin-Ciocalteu method and antioxidant activities (AOA) were assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity, ferric ion-reducing antioxidant power (FRAP) and thiobarbituric acid (TBA) methods. The following hierarchy of antioxidant activity was provided for 70% ethanolic extracts originated from whole grain: buckwheat  gt barley  gt  wheat  gt  rye. In respect to hulls, the antioxidant hierarchy was the same. The outer layers of grains had higher amount of phenolic compounds and subsequently higher antioxidant activity. Buckwheat had the highest amount of total phenolics, with the highest DPPH radical scavenging activity and capacity for Fe3+ reduction, but it had the lowest lipid peroxidation inhibition ability.
AB  - Cilj rada je bio da se ispita antioksidativna aktivnost etanolnog ekstrakta zrna cerealija i njihovih morfoloških frakcija. Ispitivani se : pšenica (Triticum durum L.), ječam (Hordeum vulgare L.), raž (Secale cereale L.) i heljda (Fagopyrum esculentum). Određivan je sadržaj ukupnih fenola (TPC) metodom po Folin-Ciocalteu i antioksidativna aktivnost (AOA) po tri najčešće korišćene metode: DPPH (sposobnost neutralizacije 2,2-difenil-1-pikrilhidrazil radikala), FRAP (antioksidativna sposobnost redukcije Fe III jona) i TBA ( metoda sa tiobarbiturnom kiselinom). Antioksidativna aktivnost etanolnog ekstrakta celog zrna opada u sledećem nizu: heljda gt ječam gt pšenica gt raž. Isti odnos je dobijen i za mekinje. Spoljni slojevi zrna imaju veći sadržaj polifenola, pa sledstveno tome i veću antioksidativnu aktivnost. Heljda sadrži najviše polifenola i ima najveću antioksidativnu aktivnost određenu DPPH i FRAP metodom, ali ima najmanju sposobnost inhibicije lipidne peroksidacije.
PB  - Društvo za ishranu Srbije, Beograd
T2  - Hrana i ishrana
T1  - Antioxidant activity in different morphological fractions of some cereal grains
T1  - Antioksidativna aktivnost različitih morfoloških frakcija zrna nekih cerealija
EP  - 23
IS  - 2
SP  - 17
VL  - 58
DO  - 10.5937/HraIsh1702017Q
ER  - 
@article{
author = "Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana and Ðorđević, Tijana M.",
year = "2017",
abstract = "The purpose of this study was to examine the antioxidant properties of 70% ethanolic extracts of cereal grains and their different morphological fractions. Wheat (Triticum durum L.), barley (Hordeum vulgare L.), rye (Secale cereale L.), and buckwheat (Fagopyrum esculentum) were used. The total phenolic content (TPC), determined by the Folin-Ciocalteu method and antioxidant activities (AOA) were assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity, ferric ion-reducing antioxidant power (FRAP) and thiobarbituric acid (TBA) methods. The following hierarchy of antioxidant activity was provided for 70% ethanolic extracts originated from whole grain: buckwheat  gt barley  gt  wheat  gt  rye. In respect to hulls, the antioxidant hierarchy was the same. The outer layers of grains had higher amount of phenolic compounds and subsequently higher antioxidant activity. Buckwheat had the highest amount of total phenolics, with the highest DPPH radical scavenging activity and capacity for Fe3+ reduction, but it had the lowest lipid peroxidation inhibition ability., Cilj rada je bio da se ispita antioksidativna aktivnost etanolnog ekstrakta zrna cerealija i njihovih morfoloških frakcija. Ispitivani se : pšenica (Triticum durum L.), ječam (Hordeum vulgare L.), raž (Secale cereale L.) i heljda (Fagopyrum esculentum). Određivan je sadržaj ukupnih fenola (TPC) metodom po Folin-Ciocalteu i antioksidativna aktivnost (AOA) po tri najčešće korišćene metode: DPPH (sposobnost neutralizacije 2,2-difenil-1-pikrilhidrazil radikala), FRAP (antioksidativna sposobnost redukcije Fe III jona) i TBA ( metoda sa tiobarbiturnom kiselinom). Antioksidativna aktivnost etanolnog ekstrakta celog zrna opada u sledećem nizu: heljda gt ječam gt pšenica gt raž. Isti odnos je dobijen i za mekinje. Spoljni slojevi zrna imaju veći sadržaj polifenola, pa sledstveno tome i veću antioksidativnu aktivnost. Heljda sadrži najviše polifenola i ima najveću antioksidativnu aktivnost određenu DPPH i FRAP metodom, ali ima najmanju sposobnost inhibicije lipidne peroksidacije.",
publisher = "Društvo za ishranu Srbije, Beograd",
journal = "Hrana i ishrana",
title = "Antioxidant activity in different morphological fractions of some cereal grains, Antioksidativna aktivnost različitih morfoloških frakcija zrna nekih cerealija",
pages = "23-17",
number = "2",
volume = "58",
doi = "10.5937/HraIsh1702017Q"
}
Šiler-Marinković, S., Dimitrijević-Branković, S.,& Ðorđević, T. M.. (2017). Antioxidant activity in different morphological fractions of some cereal grains. in Hrana i ishrana
Društvo za ishranu Srbije, Beograd., 58(2), 17-23.
https://doi.org/10.5937/HraIsh1702017Q
Šiler-Marinković S, Dimitrijević-Branković S, Ðorđević TM. Antioxidant activity in different morphological fractions of some cereal grains. in Hrana i ishrana. 2017;58(2):17-23.
doi:10.5937/HraIsh1702017Q .
Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, Ðorđević, Tijana M., "Antioxidant activity in different morphological fractions of some cereal grains" in Hrana i ishrana, 58, no. 2 (2017):17-23,
https://doi.org/10.5937/HraIsh1702017Q . .
1

Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7

Buntić, Aneta; Pavlović, Marija D.; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Iwa Publishing, London, 2016)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Pavlović, Marija D.
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3250
AB  - This study aims to investigate the biological processes related to the biodegradable potential of growing microbial cells for contaminated water treatment. Thus, the use of the Streptomyces fulvissimus CKS 7 (CKS7) has been evaluated for decolorizing efficiency of a solution containing a cationic triphenylmethane dye, crystal violet. The color reduction was monitored by UV-Vis spectroscopic analysis, through changes in their absorption spectrum and comparing the results with those of the respective controls. It was found that the CKS7 performed well and reached up to 100% effectiveness. The required process parameters have been apparently mild and include the reaction temperature of 27-30 degrees C, 10% inoculum size, under shaking conditions, whereas the time course of decolorization had been concentration dependent. A possible mechanism for removing dye from the working medium was accomplished in two steps: the binding of the dye on the bacterial cell surface, in addition to the dye biodegradation by the bacterial intracellular enzymes. After one cycle of the complete dye removal, the adapted culture was successfully reused for the same purpose. The phytotoxicity analysis revealed that non-toxic compounds were present in decolorized medium, indicating that the CKS7 bacteria seem to be a promising application for contaminated water treatment.
PB  - Iwa Publishing, London
T2  - Water Science and Technology
T1  - Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7
EP  - 2236
IS  - 9
SP  - 2231
VL  - 73
DO  - 10.2166/wst.2016.078
ER  - 
@article{
author = "Buntić, Aneta and Pavlović, Marija D. and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2016",
abstract = "This study aims to investigate the biological processes related to the biodegradable potential of growing microbial cells for contaminated water treatment. Thus, the use of the Streptomyces fulvissimus CKS 7 (CKS7) has been evaluated for decolorizing efficiency of a solution containing a cationic triphenylmethane dye, crystal violet. The color reduction was monitored by UV-Vis spectroscopic analysis, through changes in their absorption spectrum and comparing the results with those of the respective controls. It was found that the CKS7 performed well and reached up to 100% effectiveness. The required process parameters have been apparently mild and include the reaction temperature of 27-30 degrees C, 10% inoculum size, under shaking conditions, whereas the time course of decolorization had been concentration dependent. A possible mechanism for removing dye from the working medium was accomplished in two steps: the binding of the dye on the bacterial cell surface, in addition to the dye biodegradation by the bacterial intracellular enzymes. After one cycle of the complete dye removal, the adapted culture was successfully reused for the same purpose. The phytotoxicity analysis revealed that non-toxic compounds were present in decolorized medium, indicating that the CKS7 bacteria seem to be a promising application for contaminated water treatment.",
publisher = "Iwa Publishing, London",
journal = "Water Science and Technology",
title = "Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7",
pages = "2236-2231",
number = "9",
volume = "73",
doi = "10.2166/wst.2016.078"
}
Buntić, A., Pavlović, M. D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2016). Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7. in Water Science and Technology
Iwa Publishing, London., 73(9), 2231-2236.
https://doi.org/10.2166/wst.2016.078
Buntić A, Pavlović MD, Šiler-Marinković S, Dimitrijević-Branković S. Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7. in Water Science and Technology. 2016;73(9):2231-2236.
doi:10.2166/wst.2016.078 .
Buntić, Aneta, Pavlović, Marija D., Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Biological treatment of colored wastewater by Streptomyces fulvissimus CKS 7" in Water Science and Technology, 73, no. 9 (2016):2231-2236,
https://doi.org/10.2166/wst.2016.078 . .
1
12
9
12

Carboxymethyl cellulase production from a Paenibacillus sp.

Mihajlovski, Katarina; Davidović, Slađana; Simović, Milica; Radovanović, Neda; Šiler-Marinković, Slavica; Rajilić-Stojanović, Mirjana; Dimitrijević-Branković, Suzana

(Savez hemijskih inženjera, Beograd, 2016)

TY  - JOUR
AU  - Mihajlovski, Katarina
AU  - Davidović, Slađana
AU  - Simović, Milica
AU  - Radovanović, Neda
AU  - Šiler-Marinković, Slavica
AU  - Rajilić-Stojanović, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3229
AB  - Cellulases are industrially important enzymes with a potential to convert cellulose into fermentable sugars. Novel bacterial isolate Paenibacillus sp. CKS1 was tested for cellulase activity and the optimal conditions for carboxymethyl cellulase (CMCase) production were determined. Maximum CMCase activity was obtained in the third passage of the bacterial culture after 3 days of incubation at 30 degrees C. Cellobiose and yeast extract was the optimal source of carbon and nitrogen for induction of CMCase activity. In addition, with initial pH 7 of the medium and 40 ml of working volume in 500 ml culture flasks with shaking at 150 rpm, the maximum CMCase activity in a crude culture supernatant reached value of 0.532 +/- 0.006 U/ml. For crude CMCase, optimal temperature was 50 degrees C and optimal pH 4.8, respectively. HPLC analysis confirmed the bacterium is capable to hydrolise CMC to glucose and other soluble sugars.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Carboxymethyl cellulase production from a Paenibacillus sp.
EP  - 338
IS  - 3
SP  - 329
VL  - 70
DO  - 10.2298/HEMIND150222038M
ER  - 
@article{
author = "Mihajlovski, Katarina and Davidović, Slađana and Simović, Milica and Radovanović, Neda and Šiler-Marinković, Slavica and Rajilić-Stojanović, Mirjana and Dimitrijević-Branković, Suzana",
year = "2016",
abstract = "Cellulases are industrially important enzymes with a potential to convert cellulose into fermentable sugars. Novel bacterial isolate Paenibacillus sp. CKS1 was tested for cellulase activity and the optimal conditions for carboxymethyl cellulase (CMCase) production were determined. Maximum CMCase activity was obtained in the third passage of the bacterial culture after 3 days of incubation at 30 degrees C. Cellobiose and yeast extract was the optimal source of carbon and nitrogen for induction of CMCase activity. In addition, with initial pH 7 of the medium and 40 ml of working volume in 500 ml culture flasks with shaking at 150 rpm, the maximum CMCase activity in a crude culture supernatant reached value of 0.532 +/- 0.006 U/ml. For crude CMCase, optimal temperature was 50 degrees C and optimal pH 4.8, respectively. HPLC analysis confirmed the bacterium is capable to hydrolise CMC to glucose and other soluble sugars.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Carboxymethyl cellulase production from a Paenibacillus sp.",
pages = "338-329",
number = "3",
volume = "70",
doi = "10.2298/HEMIND150222038M"
}
Mihajlovski, K., Davidović, S., Simović, M., Radovanović, N., Šiler-Marinković, S., Rajilić-Stojanović, M.,& Dimitrijević-Branković, S.. (2016). Carboxymethyl cellulase production from a Paenibacillus sp.. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 70(3), 329-338.
https://doi.org/10.2298/HEMIND150222038M
Mihajlovski K, Davidović S, Simović M, Radovanović N, Šiler-Marinković S, Rajilić-Stojanović M, Dimitrijević-Branković S. Carboxymethyl cellulase production from a Paenibacillus sp.. in Hemijska industrija. 2016;70(3):329-338.
doi:10.2298/HEMIND150222038M .
Mihajlovski, Katarina, Davidović, Slađana, Simović, Milica, Radovanović, Neda, Šiler-Marinković, Slavica, Rajilić-Stojanović, Mirjana, Dimitrijević-Branković, Suzana, "Carboxymethyl cellulase production from a Paenibacillus sp." in Hemijska industrija, 70, no. 3 (2016):329-338,
https://doi.org/10.2298/HEMIND150222038M . .
1
9
7
10

Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization

Buntić, Aneta; Pavlović, Marija D.; Antonović, Dušan; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Elsevier Sci Ltd, Oxford, 2016)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Pavlović, Marija D.
AU  - Antonović, Dušan
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3414
AB  - This study has explored the feasibility of using spent coffee grounds as a good supporting material for the Paenibacillus chitinolyticus CKS1 cellulase immobilization. An optimal operational conditions in a batch-adsorption system were found to be: carrier mass of 12 g/L, under the temperature of 45 degrees C and no pH adjustments. The immobilization yield reached about 71%. An equilibrium establishment between the cellulase and the carrier surface occurred within 45 min, whereas the process kinetics may be predicted by the pseudo-second-order model. An immobilized cellulase preparation expressed very good avicelase activity, this reached up to 2.67 U/g, and revealed an improved storage stability property, compared to free enzyme sample counterpart. The addition of metal ions, such as K+ and Mg2+ did not affect positively immobilization yield results, but on the contrary, contributed to an improved bio-activities of the immobilized cellulase, thus may be employed before each enzyme application. The method developed in this study offers a cheap and effective alternative for immediate enzyme isolation from the production medium and its stabilization, compared to other carriers used for the immobilization.
PB  - Elsevier Sci Ltd, Oxford
T2  - Heliyon
T1  - Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization
IS  - 8
VL  - 2
DO  - 10.1016/j.heliyon.2016.e00146
ER  - 
@article{
author = "Buntić, Aneta and Pavlović, Marija D. and Antonović, Dušan and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2016",
abstract = "This study has explored the feasibility of using spent coffee grounds as a good supporting material for the Paenibacillus chitinolyticus CKS1 cellulase immobilization. An optimal operational conditions in a batch-adsorption system were found to be: carrier mass of 12 g/L, under the temperature of 45 degrees C and no pH adjustments. The immobilization yield reached about 71%. An equilibrium establishment between the cellulase and the carrier surface occurred within 45 min, whereas the process kinetics may be predicted by the pseudo-second-order model. An immobilized cellulase preparation expressed very good avicelase activity, this reached up to 2.67 U/g, and revealed an improved storage stability property, compared to free enzyme sample counterpart. The addition of metal ions, such as K+ and Mg2+ did not affect positively immobilization yield results, but on the contrary, contributed to an improved bio-activities of the immobilized cellulase, thus may be employed before each enzyme application. The method developed in this study offers a cheap and effective alternative for immediate enzyme isolation from the production medium and its stabilization, compared to other carriers used for the immobilization.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Heliyon",
title = "Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization",
number = "8",
volume = "2",
doi = "10.1016/j.heliyon.2016.e00146"
}
Buntić, A., Pavlović, M. D., Antonović, D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2016). Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization. in Heliyon
Elsevier Sci Ltd, Oxford., 2(8).
https://doi.org/10.1016/j.heliyon.2016.e00146
Buntić A, Pavlović MD, Antonović D, Šiler-Marinković S, Dimitrijević-Branković S. Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization. in Heliyon. 2016;2(8).
doi:10.1016/j.heliyon.2016.e00146 .
Buntić, Aneta, Pavlović, Marija D., Antonović, Dušan, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Utilization of spent coffee grounds for isolation and stabilization of Paenibacillus chitinolyticus CKS1 cellulase by immobilization" in Heliyon, 2, no. 8 (2016),
https://doi.org/10.1016/j.heliyon.2016.e00146 . .
2
21
10
18

Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1

Mihajlovski, Katarina; Radovanović, Neda; Veljović, Đorđe; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Elsevier, Amsterdam, 2016)

TY  - JOUR
AU  - Mihajlovski, Katarina
AU  - Radovanović, Neda
AU  - Veljović, Đorđe
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3390
AB  - Molasses and sugar beet pulp, by-products in sugar industry, are produced in large amounts annually which create disposal problems. High sugar content in sugar beet molasses enables its use for fermentations while sugar beet pulp represents an interesting cheap raw material source for enzyme production. beta-amylase production by a new strain Paenibacillus chitinolyticus CKS1 was performed using a molasses and sugar beet pulp. Two different pretreatments of SBP were investigated while scanning electron microscopy (SEM) showed immobilization of P. chitinolyticus CKS1 cells onto alkali treated SBP. The statistical model was design via Central Composite Design (CCD) under the Response Surface Methodology (RSM) using three variables (inoculum concentration, time of incubation and sugar beet pulp concentration) for obtaining maximum beta-amylase activity. An approximately 3.66-fold increase in beta-amylase production was achieved in the optimized medium as compared with the nonoptimized medium. A maximum beta-amylase production 2.237 U/ml was achieved under optimal conditions inoculum concentration 10%, incubation time 83.07 h and SBP concentration 3%. A high performance liquid chromatography showed that P. chitinolyticus CKS1 hydrolyzed starch to form maltose as a major product. These results indicate that beta-amylase production could be improved using these kind of processes. Also, taking into consideration cheap substrates, economic side of the process is justified.
PB  - Elsevier, Amsterdam
T2  - Industrial Crops and Products
T1  - Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1
EP  - 122
SP  - 115
VL  - 80
DO  - 10.1016/j.indcrop.2015.11.025
ER  - 
@article{
author = "Mihajlovski, Katarina and Radovanović, Neda and Veljović, Đorđe and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2016",
abstract = "Molasses and sugar beet pulp, by-products in sugar industry, are produced in large amounts annually which create disposal problems. High sugar content in sugar beet molasses enables its use for fermentations while sugar beet pulp represents an interesting cheap raw material source for enzyme production. beta-amylase production by a new strain Paenibacillus chitinolyticus CKS1 was performed using a molasses and sugar beet pulp. Two different pretreatments of SBP were investigated while scanning electron microscopy (SEM) showed immobilization of P. chitinolyticus CKS1 cells onto alkali treated SBP. The statistical model was design via Central Composite Design (CCD) under the Response Surface Methodology (RSM) using three variables (inoculum concentration, time of incubation and sugar beet pulp concentration) for obtaining maximum beta-amylase activity. An approximately 3.66-fold increase in beta-amylase production was achieved in the optimized medium as compared with the nonoptimized medium. A maximum beta-amylase production 2.237 U/ml was achieved under optimal conditions inoculum concentration 10%, incubation time 83.07 h and SBP concentration 3%. A high performance liquid chromatography showed that P. chitinolyticus CKS1 hydrolyzed starch to form maltose as a major product. These results indicate that beta-amylase production could be improved using these kind of processes. Also, taking into consideration cheap substrates, economic side of the process is justified.",
publisher = "Elsevier, Amsterdam",
journal = "Industrial Crops and Products",
title = "Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1",
pages = "122-115",
volume = "80",
doi = "10.1016/j.indcrop.2015.11.025"
}
Mihajlovski, K., Radovanović, N., Veljović, Đ., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2016). Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1. in Industrial Crops and Products
Elsevier, Amsterdam., 80, 115-122.
https://doi.org/10.1016/j.indcrop.2015.11.025
Mihajlovski K, Radovanović N, Veljović Đ, Šiler-Marinković S, Dimitrijević-Branković S. Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1. in Industrial Crops and Products. 2016;80:115-122.
doi:10.1016/j.indcrop.2015.11.025 .
Mihajlovski, Katarina, Radovanović, Neda, Veljović, Đorđe, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Improved beta-amylase production on molasses and sugar beet pulp by a novel strain Paenibacillus chitinolyticus CKS1" in Industrial Crops and Products, 80 (2016):115-122,
https://doi.org/10.1016/j.indcrop.2015.11.025 . .
23
18
23

Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1

Mihajlovski, Katarina R.; Radovanović, Neda R.; Miljković, Miona M.; Mladenović, Dragana D.; Dimitrijević-Branković, Suzana I.; Šiler-Marinković, Slavica

(Bor : Technical Faculty, 2015)

TY  - CONF
AU  - Mihajlovski, Katarina R.
AU  - Radovanović, Neda R.
AU  - Miljković, Miona M.
AU  - Mladenović, Dragana D.
AU  - Dimitrijević-Branković, Suzana I.
AU  - Šiler-Marinković, Slavica
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6159
AB  - Sugar beet pulp (SBP) and molasses, by-products from sugar industry were used as a substrate for cellulase production in this study. Solid state fermentation (SSF) was performed by a natural isolate Paenibacillus chitinolyticus CKS1. Data showed that cellulose in SBP could be used as a substrate to produce both cellulases, CMCase and Avicelase. An optimum solid: moisture ratio for maximum cellulase production was investigated. Maximum CMCase 3.159 U/g and Avicelase activity 4.840 U/g was obtained at the fourth day of incubation with 10% of inoculum. The cellulase production during SSF on SBP indicates that this process is economically very justified.
PB  - Bor : Technical Faculty
C3  - Proceedings / XXIII International Conference "Ecological Truth", Eco-Ist '15, 17-20 June 2015, Kopaonik, Serbia
T1  - Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1
EP  - 408
SP  - 403
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6159
ER  - 
@conference{
author = "Mihajlovski, Katarina R. and Radovanović, Neda R. and Miljković, Miona M. and Mladenović, Dragana D. and Dimitrijević-Branković, Suzana I. and Šiler-Marinković, Slavica",
year = "2015",
abstract = "Sugar beet pulp (SBP) and molasses, by-products from sugar industry were used as a substrate for cellulase production in this study. Solid state fermentation (SSF) was performed by a natural isolate Paenibacillus chitinolyticus CKS1. Data showed that cellulose in SBP could be used as a substrate to produce both cellulases, CMCase and Avicelase. An optimum solid: moisture ratio for maximum cellulase production was investigated. Maximum CMCase 3.159 U/g and Avicelase activity 4.840 U/g was obtained at the fourth day of incubation with 10% of inoculum. The cellulase production during SSF on SBP indicates that this process is economically very justified.",
publisher = "Bor : Technical Faculty",
journal = "Proceedings / XXIII International Conference "Ecological Truth", Eco-Ist '15, 17-20 June 2015, Kopaonik, Serbia",
title = "Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1",
pages = "408-403",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6159"
}
Mihajlovski, K. R., Radovanović, N. R., Miljković, M. M., Mladenović, D. D., Dimitrijević-Branković, S. I.,& Šiler-Marinković, S.. (2015). Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1. in Proceedings / XXIII International Conference "Ecological Truth", Eco-Ist '15, 17-20 June 2015, Kopaonik, Serbia
Bor : Technical Faculty., 403-408.
https://hdl.handle.net/21.15107/rcub_technorep_6159
Mihajlovski KR, Radovanović NR, Miljković MM, Mladenović DD, Dimitrijević-Branković SI, Šiler-Marinković S. Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1. in Proceedings / XXIII International Conference "Ecological Truth", Eco-Ist '15, 17-20 June 2015, Kopaonik, Serbia. 2015;:403-408.
https://hdl.handle.net/21.15107/rcub_technorep_6159 .
Mihajlovski, Katarina R., Radovanović, Neda R., Miljković, Miona M., Mladenović, Dragana D., Dimitrijević-Branković, Suzana I., Šiler-Marinković, Slavica, "Sugar beet pulp and molasses as a solid state fermentation media for cellulase production by Paenibacillus chitinolyticus CKS1" in Proceedings / XXIII International Conference "Ecological Truth", Eco-Ist '15, 17-20 June 2015, Kopaonik, Serbia (2015):403-408,
https://hdl.handle.net/21.15107/rcub_technorep_6159 .

Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7

Buntić, Aneta; Pavlović, Marija; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(IWA The International Water Association, 2015)

TY  - CONF
AU  - Buntić, Aneta
AU  - Pavlović, Marija
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6432
AB  - This study aims to investigate an advanced biological processes these are relayed to biodegradable
potential of growing microbial cells for contaminated water treatment. Thus the use of the
Streptomyces fulvissimus CKS 7 has been evaluated for decolorizing efficiency of a solution
containing a cationic triphenylmethane dye, crystal violet (CV). The color reduction was
monitored by UV–Vis spectroscopic analysis, through changes in their absorption spectrum and
comparing the results, to those of the respective controls. It was found that the CKS 7 performed
well and reached up to 100 % of effectiveness. The required process parameters have been
apparently mild and include the 10 % inoculum size, reaction temperature of 27-30° C, under
shaking conditions, whereas the time course of decolorization has been concentration dependent.
A possible mechanism for removing dye from working medium was accomplished in two steps:
binding of the dye by bacterial cells on their surface in addition to dye biodegradation by bacterial
intracellular enzymes. After one cycle of the complete dye removal, adapted culture was
successfully reused for the same purpose. The phytotoxicity analysis revealed that no toxic
compounds were present in decolorized medium, indicating that the use of CKS 7 bacteria seems
to be promising applicants for contaminated water treatment.
PB  - IWA The International Water Association
C3  - 7th Eastern European Young Water Professionals Conference
T1  - Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7
EP  - 435
SP  - 429
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6432
ER  - 
@conference{
author = "Buntić, Aneta and Pavlović, Marija and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2015",
abstract = "This study aims to investigate an advanced biological processes these are relayed to biodegradable
potential of growing microbial cells for contaminated water treatment. Thus the use of the
Streptomyces fulvissimus CKS 7 has been evaluated for decolorizing efficiency of a solution
containing a cationic triphenylmethane dye, crystal violet (CV). The color reduction was
monitored by UV–Vis spectroscopic analysis, through changes in their absorption spectrum and
comparing the results, to those of the respective controls. It was found that the CKS 7 performed
well and reached up to 100 % of effectiveness. The required process parameters have been
apparently mild and include the 10 % inoculum size, reaction temperature of 27-30° C, under
shaking conditions, whereas the time course of decolorization has been concentration dependent.
A possible mechanism for removing dye from working medium was accomplished in two steps:
binding of the dye by bacterial cells on their surface in addition to dye biodegradation by bacterial
intracellular enzymes. After one cycle of the complete dye removal, adapted culture was
successfully reused for the same purpose. The phytotoxicity analysis revealed that no toxic
compounds were present in decolorized medium, indicating that the use of CKS 7 bacteria seems
to be promising applicants for contaminated water treatment.",
publisher = "IWA The International Water Association",
journal = "7th Eastern European Young Water Professionals Conference",
title = "Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7",
pages = "435-429",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6432"
}
Buntić, A., Pavlović, M., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2015). Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7. in 7th Eastern European Young Water Professionals Conference
IWA The International Water Association., 429-435.
https://hdl.handle.net/21.15107/rcub_technorep_6432
Buntić A, Pavlović M, Šiler-Marinković S, Dimitrijević-Branković S. Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7. in 7th Eastern European Young Water Professionals Conference. 2015;:429-435.
https://hdl.handle.net/21.15107/rcub_technorep_6432 .
Buntić, Aneta, Pavlović, Marija, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Biological Treatment of Colored Wastewater by Streptomyces fulvissimus CKS 7" in 7th Eastern European Young Water Professionals Conference (2015):429-435,
https://hdl.handle.net/21.15107/rcub_technorep_6432 .

Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1

Mihajlovski, Katarina; Carević, Milica; Dević, Marija Lj.; Šiler-Marinković, Slavica; Rajilić-Stojanović, Mirjana; Dimitrijević-Branković, Suzana

(Elsevier Sci Ltd, Oxford, 2015)

TY  - JOUR
AU  - Mihajlovski, Katarina
AU  - Carević, Milica
AU  - Dević, Marija Lj.
AU  - Šiler-Marinković, Slavica
AU  - Rajilić-Stojanović, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3137
AB  - A novel strain of Paenibacillus chitinolyticus CKS1 was isolated from forest soil and identified as a potent cellulase producer. The strain was able to grow on various commercial substrates including microcrystalline cellulose (Avicel), carboxymethylcellulose (CMC), and cellobiose but also on lignocellulosic waste material such as medicinal herbs waste and sawdust. On all these substrates the strain produced cellulase composed of two subunits (similar to 70 and similar to 45 kDa) that was active on CMC, Avicel and filter paper. The maximal Avicelase activity (1.94 U/ml) was reached in a medium that contained 0.1% (w/v) of medicinal herbs waste, 3 g l(-1) of yeast extract and 5.0 g l(-1) of casein hydrolysate in 0.1 M phosphate buffer pH 7, after 48 h of incubation at 30 degrees C. The Avicelase performed optimally at 80 degrees C and at pH 4.8. Addition of K+ increased the Avicelase activity almost three fold and the enzyme retained 48.39% of the initial activity after 60 min. The product of Avicel and CMC hydrolysis was glucose with traces of other soluble sugars, indicating that the crude cellulase produced on waste material using the novel P. chitinolyticus strain CKS 1 could be used in eco-friendly processes of cellulose bioconversion, such as enzymatic saccharification of lignocellulosic materials in processes performed under acidophilic conditions and high temperatures.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Biodeterioration & Biodegradation
T1  - Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1
EP  - 434
SP  - 426
VL  - 104
DO  - 10.1016/j.ibiod.2015.07.012
ER  - 
@article{
author = "Mihajlovski, Katarina and Carević, Milica and Dević, Marija Lj. and Šiler-Marinković, Slavica and Rajilić-Stojanović, Mirjana and Dimitrijević-Branković, Suzana",
year = "2015",
abstract = "A novel strain of Paenibacillus chitinolyticus CKS1 was isolated from forest soil and identified as a potent cellulase producer. The strain was able to grow on various commercial substrates including microcrystalline cellulose (Avicel), carboxymethylcellulose (CMC), and cellobiose but also on lignocellulosic waste material such as medicinal herbs waste and sawdust. On all these substrates the strain produced cellulase composed of two subunits (similar to 70 and similar to 45 kDa) that was active on CMC, Avicel and filter paper. The maximal Avicelase activity (1.94 U/ml) was reached in a medium that contained 0.1% (w/v) of medicinal herbs waste, 3 g l(-1) of yeast extract and 5.0 g l(-1) of casein hydrolysate in 0.1 M phosphate buffer pH 7, after 48 h of incubation at 30 degrees C. The Avicelase performed optimally at 80 degrees C and at pH 4.8. Addition of K+ increased the Avicelase activity almost three fold and the enzyme retained 48.39% of the initial activity after 60 min. The product of Avicel and CMC hydrolysis was glucose with traces of other soluble sugars, indicating that the crude cellulase produced on waste material using the novel P. chitinolyticus strain CKS 1 could be used in eco-friendly processes of cellulose bioconversion, such as enzymatic saccharification of lignocellulosic materials in processes performed under acidophilic conditions and high temperatures.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Biodeterioration & Biodegradation",
title = "Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1",
pages = "434-426",
volume = "104",
doi = "10.1016/j.ibiod.2015.07.012"
}
Mihajlovski, K., Carević, M., Dević, M. Lj., Šiler-Marinković, S., Rajilić-Stojanović, M.,& Dimitrijević-Branković, S.. (2015). Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1. in International Biodeterioration & Biodegradation
Elsevier Sci Ltd, Oxford., 104, 426-434.
https://doi.org/10.1016/j.ibiod.2015.07.012
Mihajlovski K, Carević M, Dević ML, Šiler-Marinković S, Rajilić-Stojanović M, Dimitrijević-Branković S. Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1. in International Biodeterioration & Biodegradation. 2015;104:426-434.
doi:10.1016/j.ibiod.2015.07.012 .
Mihajlovski, Katarina, Carević, Milica, Dević, Marija Lj., Šiler-Marinković, Slavica, Rajilić-Stojanović, Mirjana, Dimitrijević-Branković, Suzana, "Lignocellulosic waste material as substrate for Avicelase production by a new strain of Paenibacillus chitinolyticus CKS1" in International Biodeterioration & Biodegradation, 104 (2015):426-434,
https://doi.org/10.1016/j.ibiod.2015.07.012 . .
24
15
22

beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1

Mihajlovski, Katarina; Radovanović, Neda; Miljković, Miona; Šiler-Marinković, Slavica; Rajilić-Stojanović, Mirjana; Dimitrijević-Branković, Suzana

(Royal Society of Chemistry, 2015)

TY  - JOUR
AU  - Mihajlovski, Katarina
AU  - Radovanović, Neda
AU  - Miljković, Miona
AU  - Šiler-Marinković, Slavica
AU  - Rajilić-Stojanović, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3069
AB  - Transport packaging factories generate a large amount of wastewater that contains residuals of starch glue. These residuals could be used as substrates for microorganism growth and enzyme production. In this study, beta-amylase production using a new strain Paenibacillus chitinolyticus CKS1 was optimized using wastewater from a Serbian transport packaging factory. The optimization of beta-amylase production was carried out using Response Surface Methodology (RSM). A Central Composite Design under the RSM with four interacting parameters (incubation time, inoculum concentration, casein hydrolysate concentration and yeast extract concentration) was employed to identify the optimal conditions for maximum beta-amylase activity (334.20 U L-1) as 62 h of incubation with 2.40% inoculum, 2.02 g L-1 casein hydrolysate and 3.98 g L-1 yeast extract. High performance liquid chromatography showed that the P. chitinolyticus CKS1 strain hydrolyzed starch to form maltose as a major product. Due to the application of wastewater as an inexpensive material for enzyme and maltose production it may be considered that the economic and eco-friendly aspects of this method are very promising.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1
EP  - 90903
IS  - 110
SP  - 90895
VL  - 5
DO  - 10.1039/c5ra11964b
ER  - 
@article{
author = "Mihajlovski, Katarina and Radovanović, Neda and Miljković, Miona and Šiler-Marinković, Slavica and Rajilić-Stojanović, Mirjana and Dimitrijević-Branković, Suzana",
year = "2015",
abstract = "Transport packaging factories generate a large amount of wastewater that contains residuals of starch glue. These residuals could be used as substrates for microorganism growth and enzyme production. In this study, beta-amylase production using a new strain Paenibacillus chitinolyticus CKS1 was optimized using wastewater from a Serbian transport packaging factory. The optimization of beta-amylase production was carried out using Response Surface Methodology (RSM). A Central Composite Design under the RSM with four interacting parameters (incubation time, inoculum concentration, casein hydrolysate concentration and yeast extract concentration) was employed to identify the optimal conditions for maximum beta-amylase activity (334.20 U L-1) as 62 h of incubation with 2.40% inoculum, 2.02 g L-1 casein hydrolysate and 3.98 g L-1 yeast extract. High performance liquid chromatography showed that the P. chitinolyticus CKS1 strain hydrolyzed starch to form maltose as a major product. Due to the application of wastewater as an inexpensive material for enzyme and maltose production it may be considered that the economic and eco-friendly aspects of this method are very promising.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1",
pages = "90903-90895",
number = "110",
volume = "5",
doi = "10.1039/c5ra11964b"
}
Mihajlovski, K., Radovanović, N., Miljković, M., Šiler-Marinković, S., Rajilić-Stojanović, M.,& Dimitrijević-Branković, S.. (2015). beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1. in RSC Advances
Royal Society of Chemistry., 5(110), 90895-90903.
https://doi.org/10.1039/c5ra11964b
Mihajlovski K, Radovanović N, Miljković M, Šiler-Marinković S, Rajilić-Stojanović M, Dimitrijević-Branković S. beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1. in RSC Advances. 2015;5(110):90895-90903.
doi:10.1039/c5ra11964b .
Mihajlovski, Katarina, Radovanović, Neda, Miljković, Miona, Šiler-Marinković, Slavica, Rajilić-Stojanović, Mirjana, Dimitrijević-Branković, Suzana, "beta-Amylase production from packaging-industry wastewater using a novel strain Paenibacillus chitinolyticus CKS 1" in RSC Advances, 5, no. 110 (2015):90895-90903,
https://doi.org/10.1039/c5ra11964b . .
4
2
2

Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust

Milutinović, Milica; Radovanović, Neda; Ćorović, Marija; Šiler-Marinković, Slavica; Rajilić-Stojanović, Mirjana; Dimitrijević-Branković, Suzana

(Elsevier Science Bv, Amsterdam, 2015)

TY  - JOUR
AU  - Milutinović, Milica
AU  - Radovanović, Neda
AU  - Ćorović, Marija
AU  - Šiler-Marinković, Slavica
AU  - Rajilić-Stojanović, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3098
AB  - Microwave-assisted extraction of polyphenols and flavonoids from waste Achillea millefolium (yarrow) dust was optimised using the response surface methodology. The influence of the extraction time (13-47 s), ethanol concentration (53-87%), liquid/solid ratio (13-47 mL/g) and microwave power (170 and 340W) was studied. The optimised conditions for the maximal recovery of polyphenols and flavonoids were as follows: 33 s of extraction time, 70% of ethanol concentration, 40 mL/g of liquid/solid ratio and 170W of microwave power. Under the optimal conditions, 237.74 +/- 2.08 mg of gallic acid equivalents per g of extract dry matter of total polyphenols, and 42.95 +/- 1.32 mg of quercetin equivalents per g of extract dry matter of total flavonoids were extracted. The optimal extract strongly reduced the diphenylpicrylhydrazyl radical (IC50 7.89 mu g/mL). The antioxidant activity of the obtained extracts was in correlation to the total polyphenol content in yarrow extracts. Compared to the conventional extractions (solid-liquid extraction (24 h) and maceration (48 h)) microwave-assisted extraction yielded extracts with higher polyphenol and flavonoid content and higher antioxidant activity in very short time (33 s).
PB  - Elsevier Science Bv, Amsterdam
T2  - Industrial Crops and Products
T1  - Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust
EP  - 341
SP  - 333
VL  - 77
DO  - 10.1016/j.indcrop.2015.09.007
ER  - 
@article{
author = "Milutinović, Milica and Radovanović, Neda and Ćorović, Marija and Šiler-Marinković, Slavica and Rajilić-Stojanović, Mirjana and Dimitrijević-Branković, Suzana",
year = "2015",
abstract = "Microwave-assisted extraction of polyphenols and flavonoids from waste Achillea millefolium (yarrow) dust was optimised using the response surface methodology. The influence of the extraction time (13-47 s), ethanol concentration (53-87%), liquid/solid ratio (13-47 mL/g) and microwave power (170 and 340W) was studied. The optimised conditions for the maximal recovery of polyphenols and flavonoids were as follows: 33 s of extraction time, 70% of ethanol concentration, 40 mL/g of liquid/solid ratio and 170W of microwave power. Under the optimal conditions, 237.74 +/- 2.08 mg of gallic acid equivalents per g of extract dry matter of total polyphenols, and 42.95 +/- 1.32 mg of quercetin equivalents per g of extract dry matter of total flavonoids were extracted. The optimal extract strongly reduced the diphenylpicrylhydrazyl radical (IC50 7.89 mu g/mL). The antioxidant activity of the obtained extracts was in correlation to the total polyphenol content in yarrow extracts. Compared to the conventional extractions (solid-liquid extraction (24 h) and maceration (48 h)) microwave-assisted extraction yielded extracts with higher polyphenol and flavonoid content and higher antioxidant activity in very short time (33 s).",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Industrial Crops and Products",
title = "Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust",
pages = "341-333",
volume = "77",
doi = "10.1016/j.indcrop.2015.09.007"
}
Milutinović, M., Radovanović, N., Ćorović, M., Šiler-Marinković, S., Rajilić-Stojanović, M.,& Dimitrijević-Branković, S.. (2015). Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust. in Industrial Crops and Products
Elsevier Science Bv, Amsterdam., 77, 333-341.
https://doi.org/10.1016/j.indcrop.2015.09.007
Milutinović M, Radovanović N, Ćorović M, Šiler-Marinković S, Rajilić-Stojanović M, Dimitrijević-Branković S. Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust. in Industrial Crops and Products. 2015;77:333-341.
doi:10.1016/j.indcrop.2015.09.007 .
Milutinović, Milica, Radovanović, Neda, Ćorović, Marija, Šiler-Marinković, Slavica, Rajilić-Stojanović, Mirjana, Dimitrijević-Branković, Suzana, "Optimisation of microwave-assisted extraction parameters for antioxidants from waste Achillea millefolium dust" in Industrial Crops and Products, 77 (2015):333-341,
https://doi.org/10.1016/j.indcrop.2015.09.007 . .
60
34
57

Plant waste materials from restaurants as the adsorbents for dyes

Pavlović, Marija D.; Nikolić, Ivan R.; Milutinović, Milica; Dimitrijević-Branković, Suzana; Šiler-Marinković, Slavica; Antonović, Dušan

(Association of Chemical Engineers of Serbia, 2015)

TY  - JOUR
AU  - Pavlović, Marija D.
AU  - Nikolić, Ivan R.
AU  - Milutinović, Milica
AU  - Dimitrijević-Branković, Suzana
AU  - Šiler-Marinković, Slavica
AU  - Antonović, Dušan
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2884
AB  - This paper has demonstrated the valorization of inexpensive and readily available restaurant waste containing most consumed food and beverage residues as adsorbents for methylene blue dye. Coffee, tea, lettuce and citrus waste have been utilized without any pre-treatment, thus the adsorption capacities and dye removal efficiency were determined. Coffee waste showed the highest adsorbent capacity, followed by tea, lettuce and citrus waste. The dye removal was more effective as dye concentration increases from 5 up to 60 mg/L. The favorable results obtained for lettuce waste have been especially encouraged, as this material has not been commonly employed for sorption purposes. Equilibrium data fitted very well in a Freundlich isotherm model, whereas pseudo-second- order kinetic model describes the process behavior. Restaurant waste performed rapid dye removal at no cost, so it can be adopted and widely used in industries for contaminated water treatment.
AB  - Metilen plavo je bazna boja sa strukturom heterocikličnog aromatičnog jedinjenja, koja se u dobu savremenog društva često koristi za bojenje raznih tipova materijala. Efluenti iz industrije boja predstavljaju jednu od najproblematičnijih vrsta otpadnih voda za tretiranje, usled njihove velike biološke i hemijske potrebe za kiseonikom. Pored toga, toksičnost i teško razgradiva priroda boja mogu značajno uticati na fotosintetičku aktivnost vodenog sveta. Adsorpcijom na čvrstim nosačima mogu se ukloniti, odnosno, svesti na minimum razni tipovi zagađivača, zbog čega ova tehnika ima široku primenu u kontroli zagađenja voda. S tim u vezi, ispitivana je mogućnost iskorišćenja sirovog otpada iz restorana za adsorpciju i uklanjanje boje metilen plavo iz vodenih rastvora. U radu su određivani adsorpcioni kapaciteti otpadnih sirovina najčešće konzumiranih namirnica, uključujući kafu, čaj, zelenu salatu i mešavinu citrusnog voća (citrusa). Proces adsorpcije izveden je u šaržnom režimu, uz mešanje na tresilici, u uslovima ambijentalne temperature. Efikasnost procesa praćena je u zavisnosti od promene koncentracije boje u radnim rastvorima. Pokazano je da otpadna kafa ispoljava najviši adsorpcioni kapacitet, a za njom otpadni čaj, zelena salata i citrusi, redom. Nakon 30 min odigravanja reakcije, na kafi se vezalo gotovo 90%, dok na čaju 80%, zelenoj salati 60% i citrusima 30% od početne koncentracije rastvora boje. Vezivanje boje na adsorbentima bilo je efikasnije u slučajevima kada je koncentracija rastvora boje rasla od 5 do 60 mg/L. Na osnovu ispitivanja najčešće primenjivanih modela izo- termi za definisanje adsorpcione ravnoteže, pronađeno je da su ravnotežni podaci, u slučajevima svih vrsta adsorbenata, bili u skladu sa Frojndlihovom adsorpcionom izotermom. S tim u vezi, smatra se da je proces odigravanja reakcije baziran na interakcijama između molekula boje i funkcionalnih grupa na heterogenoj površini adsorbenata. Kinetika i mehanizam reakcija opisani su po principu modela pseudo-drugog reda, koji se zasniva na pretpostavci da hemisorpcija, odnosno stvaranje hemijskih veza između adsorbenta i adsorbata, kontroliše celokupan tok reakcija. Iskorišćenjem sirovog otpada iz restorana može se doći do ekonomski isplativog rešenja za brzo i efikasno uklanjanje toksičnih i teško raz- gradivih boja iz vodenih rastvora. Smatra se da ova vrsta otpadnog materijala može naći svoju primenu u brojnim adsorpcionim procesima, u prvom redu onim koji se zasnivaju na tretmanima prečišćavanja otpadnih i pijaćih voda.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Plant waste materials from restaurants as the adsorbents for dyes
T1  - Iskorišćenje sirovog otpada iz restorana za adsorpciju boja
EP  - 677
IS  - 6
SP  - 667
VL  - 69
DO  - 10.2298/HEMIND140917089P
ER  - 
@article{
author = "Pavlović, Marija D. and Nikolić, Ivan R. and Milutinović, Milica and Dimitrijević-Branković, Suzana and Šiler-Marinković, Slavica and Antonović, Dušan",
year = "2015",
abstract = "This paper has demonstrated the valorization of inexpensive and readily available restaurant waste containing most consumed food and beverage residues as adsorbents for methylene blue dye. Coffee, tea, lettuce and citrus waste have been utilized without any pre-treatment, thus the adsorption capacities and dye removal efficiency were determined. Coffee waste showed the highest adsorbent capacity, followed by tea, lettuce and citrus waste. The dye removal was more effective as dye concentration increases from 5 up to 60 mg/L. The favorable results obtained for lettuce waste have been especially encouraged, as this material has not been commonly employed for sorption purposes. Equilibrium data fitted very well in a Freundlich isotherm model, whereas pseudo-second- order kinetic model describes the process behavior. Restaurant waste performed rapid dye removal at no cost, so it can be adopted and widely used in industries for contaminated water treatment., Metilen plavo je bazna boja sa strukturom heterocikličnog aromatičnog jedinjenja, koja se u dobu savremenog društva često koristi za bojenje raznih tipova materijala. Efluenti iz industrije boja predstavljaju jednu od najproblematičnijih vrsta otpadnih voda za tretiranje, usled njihove velike biološke i hemijske potrebe za kiseonikom. Pored toga, toksičnost i teško razgradiva priroda boja mogu značajno uticati na fotosintetičku aktivnost vodenog sveta. Adsorpcijom na čvrstim nosačima mogu se ukloniti, odnosno, svesti na minimum razni tipovi zagađivača, zbog čega ova tehnika ima široku primenu u kontroli zagađenja voda. S tim u vezi, ispitivana je mogućnost iskorišćenja sirovog otpada iz restorana za adsorpciju i uklanjanje boje metilen plavo iz vodenih rastvora. U radu su određivani adsorpcioni kapaciteti otpadnih sirovina najčešće konzumiranih namirnica, uključujući kafu, čaj, zelenu salatu i mešavinu citrusnog voća (citrusa). Proces adsorpcije izveden je u šaržnom režimu, uz mešanje na tresilici, u uslovima ambijentalne temperature. Efikasnost procesa praćena je u zavisnosti od promene koncentracije boje u radnim rastvorima. Pokazano je da otpadna kafa ispoljava najviši adsorpcioni kapacitet, a za njom otpadni čaj, zelena salata i citrusi, redom. Nakon 30 min odigravanja reakcije, na kafi se vezalo gotovo 90%, dok na čaju 80%, zelenoj salati 60% i citrusima 30% od početne koncentracije rastvora boje. Vezivanje boje na adsorbentima bilo je efikasnije u slučajevima kada je koncentracija rastvora boje rasla od 5 do 60 mg/L. Na osnovu ispitivanja najčešće primenjivanih modela izo- termi za definisanje adsorpcione ravnoteže, pronađeno je da su ravnotežni podaci, u slučajevima svih vrsta adsorbenata, bili u skladu sa Frojndlihovom adsorpcionom izotermom. S tim u vezi, smatra se da je proces odigravanja reakcije baziran na interakcijama između molekula boje i funkcionalnih grupa na heterogenoj površini adsorbenata. Kinetika i mehanizam reakcija opisani su po principu modela pseudo-drugog reda, koji se zasniva na pretpostavci da hemisorpcija, odnosno stvaranje hemijskih veza između adsorbenta i adsorbata, kontroliše celokupan tok reakcija. Iskorišćenjem sirovog otpada iz restorana može se doći do ekonomski isplativog rešenja za brzo i efikasno uklanjanje toksičnih i teško raz- gradivih boja iz vodenih rastvora. Smatra se da ova vrsta otpadnog materijala može naći svoju primenu u brojnim adsorpcionim procesima, u prvom redu onim koji se zasnivaju na tretmanima prečišćavanja otpadnih i pijaćih voda.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Plant waste materials from restaurants as the adsorbents for dyes, Iskorišćenje sirovog otpada iz restorana za adsorpciju boja",
pages = "677-667",
number = "6",
volume = "69",
doi = "10.2298/HEMIND140917089P"
}
Pavlović, M. D., Nikolić, I. R., Milutinović, M., Dimitrijević-Branković, S., Šiler-Marinković, S.,& Antonović, D.. (2015). Plant waste materials from restaurants as the adsorbents for dyes. in Hemijska industrija
Association of Chemical Engineers of Serbia., 69(6), 667-677.
https://doi.org/10.2298/HEMIND140917089P
Pavlović MD, Nikolić IR, Milutinović M, Dimitrijević-Branković S, Šiler-Marinković S, Antonović D. Plant waste materials from restaurants as the adsorbents for dyes. in Hemijska industrija. 2015;69(6):667-677.
doi:10.2298/HEMIND140917089P .
Pavlović, Marija D., Nikolić, Ivan R., Milutinović, Milica, Dimitrijević-Branković, Suzana, Šiler-Marinković, Slavica, Antonović, Dušan, "Plant waste materials from restaurants as the adsorbents for dyes" in Hemijska industrija, 69, no. 6 (2015):667-677,
https://doi.org/10.2298/HEMIND140917089P . .
12
7
9

Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds

Pavlović, Marija D.; Buntić, Aneta; Šiler-Marinković, Slavica; Antonović, Dušan; Dimitrijević-Branković, Suzana

(Springer, New York, 2015)

TY  - JOUR
AU  - Pavlović, Marija D.
AU  - Buntić, Aneta
AU  - Šiler-Marinković, Slavica
AU  - Antonović, Dušan
AU  - Dimitrijević-Branković, Suzana
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3117
AB  - Activated carbons from spent coffee grounds have been prepared for column adsorption of main green tea polyphenol (-)-epigallocatechingallate (EGCG). The response surface methodology was used to estimate the influence of testing variables on process effectiveness, and a good agreement was found between experimental and predicted data. Adsorption of EGCG occurred in a high ratio, and desorption process in predominantly water solutions was proven to be feasible, and thus, it recovered more than 80 % of the polyphenols. Further, the adsorbent has expressed the selectivity property, revealing the removal of EGCG in much higher content compared to other polyphenol's group. Obtained fractions of recovered EGCG have undergone just a slight bioactive loss, indicating that such adsorption/desorption performance was mild and appropriate for product stabilization. The kinetic data followed the pseudo-second-order model, and the equilibrium data fitted very well in a Freundlich isotherm equation. The investigation into binding of EGCG from green tea extract revealed that transfer of the results from model experiments to more complex real food systems may be feasible. The favorable results from the overall process suggest that coffee residues may be promising alternatives to organic resins for polyphenols recovery through improved cost efficiency.
PB  - Springer, New York
T2  - European Food Research and Technology
T1  - Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds
EP  - 412
IS  - 3
SP  - 399
VL  - 241
DO  - 10.1007/s00217-015-2472-4
ER  - 
@article{
author = "Pavlović, Marija D. and Buntić, Aneta and Šiler-Marinković, Slavica and Antonović, Dušan and Dimitrijević-Branković, Suzana",
year = "2015",
abstract = "Activated carbons from spent coffee grounds have been prepared for column adsorption of main green tea polyphenol (-)-epigallocatechingallate (EGCG). The response surface methodology was used to estimate the influence of testing variables on process effectiveness, and a good agreement was found between experimental and predicted data. Adsorption of EGCG occurred in a high ratio, and desorption process in predominantly water solutions was proven to be feasible, and thus, it recovered more than 80 % of the polyphenols. Further, the adsorbent has expressed the selectivity property, revealing the removal of EGCG in much higher content compared to other polyphenol's group. Obtained fractions of recovered EGCG have undergone just a slight bioactive loss, indicating that such adsorption/desorption performance was mild and appropriate for product stabilization. The kinetic data followed the pseudo-second-order model, and the equilibrium data fitted very well in a Freundlich isotherm equation. The investigation into binding of EGCG from green tea extract revealed that transfer of the results from model experiments to more complex real food systems may be feasible. The favorable results from the overall process suggest that coffee residues may be promising alternatives to organic resins for polyphenols recovery through improved cost efficiency.",
publisher = "Springer, New York",
journal = "European Food Research and Technology",
title = "Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds",
pages = "412-399",
number = "3",
volume = "241",
doi = "10.1007/s00217-015-2472-4"
}
Pavlović, M. D., Buntić, A., Šiler-Marinković, S., Antonović, D.,& Dimitrijević-Branković, S.. (2015). Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds. in European Food Research and Technology
Springer, New York., 241(3), 399-412.
https://doi.org/10.1007/s00217-015-2472-4
Pavlović MD, Buntić A, Šiler-Marinković S, Antonović D, Dimitrijević-Branković S. Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds. in European Food Research and Technology. 2015;241(3):399-412.
doi:10.1007/s00217-015-2472-4 .
Pavlović, Marija D., Buntić, Aneta, Šiler-Marinković, Slavica, Antonović, Dušan, Dimitrijević-Branković, Suzana, "Recovery of (-)-epigallocatechingallate (EGCG) from aqueous solution by selective adsorption onto spent coffee grounds" in European Food Research and Technology, 241, no. 3 (2015):399-412,
https://doi.org/10.1007/s00217-015-2472-4 . .
3
3
3

Screening for factors affecting cellulose adsorption from solutions by modified coffee residues

Buntić, Aneta; Pavlović, Marija; Šiler-Marinković, Slavica; Miljković, Miona; Davidović, Slađana; Mihajlovski, Katarina; Dimitrijević-Branković, Suzana

(2014)

TY  - CONF
AU  - Buntić, Aneta
AU  - Pavlović, Marija
AU  - Šiler-Marinković, Slavica
AU  - Miljković, Miona
AU  - Davidović, Slađana
AU  - Mihajlovski, Katarina
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6158
AB  - In the present study, the modified coffee residues were used as low cost adsorbent for immobilization of cellulase enzyme. In the batch model for adsorption, the experimental parameters: the temperature, the initial cellulase concentration and the agitation rate of adsorption process were investigated. The maximal percentages of immobilization yield (approximately 28%) and immobilization efficiency (approximately 48%) were obtained with the temperature of 40 °C, the initial cellulase concentration of 1 mg/mL and the agitation rate of 120 rpm. The state of dynamic equilibrium was reached after 60 minutes and the pseudo-second-order model was predicted to follow the process kinetic.
C3  - International Conference on Civil, Biological and Environmental Engineering (CBEE-2014)
T1  - Screening for factors affecting cellulose adsorption from solutions by modified coffee residues
EP  - 59
SP  - 54
DO  - 10.15242/IICBE.C514540
ER  - 
@conference{
author = "Buntić, Aneta and Pavlović, Marija and Šiler-Marinković, Slavica and Miljković, Miona and Davidović, Slađana and Mihajlovski, Katarina and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "In the present study, the modified coffee residues were used as low cost adsorbent for immobilization of cellulase enzyme. In the batch model for adsorption, the experimental parameters: the temperature, the initial cellulase concentration and the agitation rate of adsorption process were investigated. The maximal percentages of immobilization yield (approximately 28%) and immobilization efficiency (approximately 48%) were obtained with the temperature of 40 °C, the initial cellulase concentration of 1 mg/mL and the agitation rate of 120 rpm. The state of dynamic equilibrium was reached after 60 minutes and the pseudo-second-order model was predicted to follow the process kinetic.",
journal = "International Conference on Civil, Biological and Environmental Engineering (CBEE-2014)",
title = "Screening for factors affecting cellulose adsorption from solutions by modified coffee residues",
pages = "59-54",
doi = "10.15242/IICBE.C514540"
}
Buntić, A., Pavlović, M., Šiler-Marinković, S., Miljković, M., Davidović, S., Mihajlovski, K.,& Dimitrijević-Branković, S.. (2014). Screening for factors affecting cellulose adsorption from solutions by modified coffee residues. in International Conference on Civil, Biological and Environmental Engineering (CBEE-2014), 54-59.
https://doi.org/10.15242/IICBE.C514540
Buntić A, Pavlović M, Šiler-Marinković S, Miljković M, Davidović S, Mihajlovski K, Dimitrijević-Branković S. Screening for factors affecting cellulose adsorption from solutions by modified coffee residues. in International Conference on Civil, Biological and Environmental Engineering (CBEE-2014). 2014;:54-59.
doi:10.15242/IICBE.C514540 .
Buntić, Aneta, Pavlović, Marija, Šiler-Marinković, Slavica, Miljković, Miona, Davidović, Slađana, Mihajlovski, Katarina, Dimitrijević-Branković, Suzana, "Screening for factors affecting cellulose adsorption from solutions by modified coffee residues" in International Conference on Civil, Biological and Environmental Engineering (CBEE-2014) (2014):54-59,
https://doi.org/10.15242/IICBE.C514540 . .
2

Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions

Pavlović, Marija; Buntić, Aneta; Šiler-Marinković, Slavica; Antonović, Dušan; Milutinović, Milica; Radovanović, Neda; Dimitrijević-Branković, Suzana

(International Institute of Chemical, Biological and Environmental Engineering, Kuala Lumpur, Malaysia, 2014)

TY  - CONF
AU  - Pavlović, Marija
AU  - Buntić, Aneta
AU  - Šiler-Marinković, Slavica
AU  - Antonović, Dušan
AU  - Milutinović, Milica
AU  - Radovanović, Neda
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6427
AB  - Spent coffee grounds were evaluated for adsorption
efficiency in the removal of pesticide paraquat from its aqueous
solutions. The influence of the adsorbent mass, agitation time,
paraquat concentration and pH have been investigated in the batch
sorption mode. Adsorption capacity (mg/g) has been found to be
27.87 ± 1.57 mg/g, while the removal efficiency has resulted of 32.25
± 1.79 %. Adsorption rate was found to be very fast, whereby the
time required for equilibrium adsorption occurred within first 20
minutes. The process behavior was predicted using the second-order
kinetic model. On the basis of the observed data, further process
optimization may be greatly facilitated, thus it is considered that
coffee waste may be exploited well for pesticides removal purposes.
PB  - International Institute of Chemical, Biological and Environmental Engineering, Kuala Lumpur, Malaysia
C3  - International conference on civil, biological and environmental engineering (CBEE)
T1  - Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions
EP  - 65
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6427
ER  - 
@conference{
author = "Pavlović, Marija and Buntić, Aneta and Šiler-Marinković, Slavica and Antonović, Dušan and Milutinović, Milica and Radovanović, Neda and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "Spent coffee grounds were evaluated for adsorption
efficiency in the removal of pesticide paraquat from its aqueous
solutions. The influence of the adsorbent mass, agitation time,
paraquat concentration and pH have been investigated in the batch
sorption mode. Adsorption capacity (mg/g) has been found to be
27.87 ± 1.57 mg/g, while the removal efficiency has resulted of 32.25
± 1.79 %. Adsorption rate was found to be very fast, whereby the
time required for equilibrium adsorption occurred within first 20
minutes. The process behavior was predicted using the second-order
kinetic model. On the basis of the observed data, further process
optimization may be greatly facilitated, thus it is considered that
coffee waste may be exploited well for pesticides removal purposes.",
publisher = "International Institute of Chemical, Biological and Environmental Engineering, Kuala Lumpur, Malaysia",
journal = "International conference on civil, biological and environmental engineering (CBEE)",
title = "Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions",
pages = "65-60",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6427"
}
Pavlović, M., Buntić, A., Šiler-Marinković, S., Antonović, D., Milutinović, M., Radovanović, N.,& Dimitrijević-Branković, S.. (2014). Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions. in International conference on civil, biological and environmental engineering (CBEE)
International Institute of Chemical, Biological and Environmental Engineering, Kuala Lumpur, Malaysia., 60-65.
https://hdl.handle.net/21.15107/rcub_technorep_6427
Pavlović M, Buntić A, Šiler-Marinković S, Antonović D, Milutinović M, Radovanović N, Dimitrijević-Branković S. Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions. in International conference on civil, biological and environmental engineering (CBEE). 2014;:60-65.
https://hdl.handle.net/21.15107/rcub_technorep_6427 .
Pavlović, Marija, Buntić, Aneta, Šiler-Marinković, Slavica, Antonović, Dušan, Milutinović, Milica, Radovanović, Neda, Dimitrijević-Branković, Suzana, "Spent coffee grounds as adsorbents for pesticide paraquat removal from its aqueous solutions" in International conference on civil, biological and environmental engineering (CBEE) (2014):60-65,
https://hdl.handle.net/21.15107/rcub_technorep_6427 .

Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach

Pavlović, Marija D.; Buntić, Aneta; Mihajlovski, Katarina; Šiler-Marinković, Slavica; Antonović, Dušan; Radovanović, Željko; Dimitrijević-Branković, Suzana

(Elsevier Science Bv, Amsterdam, 2014)

TY  - JOUR
AU  - Pavlović, Marija D.
AU  - Buntić, Aneta
AU  - Mihajlovski, Katarina
AU  - Šiler-Marinković, Slavica
AU  - Antonović, Dušan
AU  - Radovanović, Željko
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2654
AB  - The Box-Behnken design under the response surface methodology (RSM) with five interacting parameters (adsorbent dose, initial dye concentration, time of agitation, initial solution pH and time of the adsorbent microwave activation) was employed to interpret the adsorption characteristics of cationic dye onto polyphenol-extracted coffee grounds in water solutions. Experimental results indicated that coffee ground is excellent low-cost biosorbent with dye removal ability more than 95% for a very short time (under conditions of 250 mg/L initial dye concentration and 15 g/L of adsorbent dose). The maximum adsorption capacity was 36.82 mg/g, whereby the adsorption rate was very fast (around 15 min). Batch mode experiments and kinetic regression results showed that the adsorption process was more accurately represented by a pseudo second-order model. Freundlich isotherm model was superior to the Langmuir isotherm model. FT-IR studies revealed that adsorption process was due to adsorption mediated by different functional groups present on the coffee surface.
PB  - Elsevier Science Bv, Amsterdam
T2  - Journal of the Taiwan Institute of Chemical Engineers
T1  - Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach
EP  - 1699
IS  - 4
SP  - 1691
VL  - 45
DO  - 10.1016/j.jtice.2013.12.018
ER  - 
@article{
author = "Pavlović, Marija D. and Buntić, Aneta and Mihajlovski, Katarina and Šiler-Marinković, Slavica and Antonović, Dušan and Radovanović, Željko and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "The Box-Behnken design under the response surface methodology (RSM) with five interacting parameters (adsorbent dose, initial dye concentration, time of agitation, initial solution pH and time of the adsorbent microwave activation) was employed to interpret the adsorption characteristics of cationic dye onto polyphenol-extracted coffee grounds in water solutions. Experimental results indicated that coffee ground is excellent low-cost biosorbent with dye removal ability more than 95% for a very short time (under conditions of 250 mg/L initial dye concentration and 15 g/L of adsorbent dose). The maximum adsorption capacity was 36.82 mg/g, whereby the adsorption rate was very fast (around 15 min). Batch mode experiments and kinetic regression results showed that the adsorption process was more accurately represented by a pseudo second-order model. Freundlich isotherm model was superior to the Langmuir isotherm model. FT-IR studies revealed that adsorption process was due to adsorption mediated by different functional groups present on the coffee surface.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Journal of the Taiwan Institute of Chemical Engineers",
title = "Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach",
pages = "1699-1691",
number = "4",
volume = "45",
doi = "10.1016/j.jtice.2013.12.018"
}
Pavlović, M. D., Buntić, A., Mihajlovski, K., Šiler-Marinković, S., Antonović, D., Radovanović, Ž.,& Dimitrijević-Branković, S.. (2014). Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach. in Journal of the Taiwan Institute of Chemical Engineers
Elsevier Science Bv, Amsterdam., 45(4), 1691-1699.
https://doi.org/10.1016/j.jtice.2013.12.018
Pavlović MD, Buntić A, Mihajlovski K, Šiler-Marinković S, Antonović D, Radovanović Ž, Dimitrijević-Branković S. Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach. in Journal of the Taiwan Institute of Chemical Engineers. 2014;45(4):1691-1699.
doi:10.1016/j.jtice.2013.12.018 .
Pavlović, Marija D., Buntić, Aneta, Mihajlovski, Katarina, Šiler-Marinković, Slavica, Antonović, Dušan, Radovanović, Željko, Dimitrijević-Branković, Suzana, "Rapid cationic dye adsorption on polyphenol-extracted coffee grounds-A response surface methodology approach" in Journal of the Taiwan Institute of Chemical Engineers, 45, no. 4 (2014):1691-1699,
https://doi.org/10.1016/j.jtice.2013.12.018 . .
53
44
57

Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology

Ranić, Marija; Nikolić, Marina; Pavlović, Marija; Buntić, Aneta; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Elsevier Sci Ltd, Oxford, 2014)

TY  - JOUR
AU  - Ranić, Marija
AU  - Nikolić, Marina
AU  - Pavlović, Marija
AU  - Buntić, Aneta
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2667
AB  - Espresso spent coffee grounds (SCG) that is a waste material abundantly produced by restaurants, cafeterias and in domestic environment could be used as a low-cost and rich source of valuable polyphenol compounds. The benefit would be twofold: extraction of health beneficial natural polyphenol antioxidants and reducing the cost to facilitate SCG waste management. The overall objective of this study was to examine an optimal range of extraction conditions for extraction of antioxidants from spent espresso coffee. Optimization of the extraction process from SCG was carried out using response surface methodology (RSM). Microwave-assisted extraction (MAE) has been used as a potential alternative to conventional solvent extraction for the isolation of polyphenol compounds from SCG. A complete central composite 23 factorial experimental design has been used to monitor the extraction characteristics, as affected by different variables, extraction time (ET), liquid-to-solid ratio (LSR), and microwave power (MWP). Low concentration ethanol in aqueous solutions was employed as non-toxic extracting media. With the reduced time of extraction, low power and medium liquid to solid ratio while using minimal concentration of ethanol, the polyphenols extract with high antioxidant activity can be achieved. The obtained experimental values were in solid agreement with predicted values. The FRAP and the DPPH antioxidative activity showed good correlation with the total polyphenol content (TPC), with high correlation factors. The presented data could be a reliable guidelines for establishing full-scale, sustainable cost-effective and resource-effective industrial process.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Cleaner Production
T1  - Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology
EP  - 79
SP  - 69
VL  - 80
DO  - 10.1016/j.jclepro.2014.05.060
ER  - 
@article{
author = "Ranić, Marija and Nikolić, Marina and Pavlović, Marija and Buntić, Aneta and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "Espresso spent coffee grounds (SCG) that is a waste material abundantly produced by restaurants, cafeterias and in domestic environment could be used as a low-cost and rich source of valuable polyphenol compounds. The benefit would be twofold: extraction of health beneficial natural polyphenol antioxidants and reducing the cost to facilitate SCG waste management. The overall objective of this study was to examine an optimal range of extraction conditions for extraction of antioxidants from spent espresso coffee. Optimization of the extraction process from SCG was carried out using response surface methodology (RSM). Microwave-assisted extraction (MAE) has been used as a potential alternative to conventional solvent extraction for the isolation of polyphenol compounds from SCG. A complete central composite 23 factorial experimental design has been used to monitor the extraction characteristics, as affected by different variables, extraction time (ET), liquid-to-solid ratio (LSR), and microwave power (MWP). Low concentration ethanol in aqueous solutions was employed as non-toxic extracting media. With the reduced time of extraction, low power and medium liquid to solid ratio while using minimal concentration of ethanol, the polyphenols extract with high antioxidant activity can be achieved. The obtained experimental values were in solid agreement with predicted values. The FRAP and the DPPH antioxidative activity showed good correlation with the total polyphenol content (TPC), with high correlation factors. The presented data could be a reliable guidelines for establishing full-scale, sustainable cost-effective and resource-effective industrial process.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Cleaner Production",
title = "Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology",
pages = "79-69",
volume = "80",
doi = "10.1016/j.jclepro.2014.05.060"
}
Ranić, M., Nikolić, M., Pavlović, M., Buntić, A., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2014). Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology. in Journal of Cleaner Production
Elsevier Sci Ltd, Oxford., 80, 69-79.
https://doi.org/10.1016/j.jclepro.2014.05.060
Ranić M, Nikolić M, Pavlović M, Buntić A, Šiler-Marinković S, Dimitrijević-Branković S. Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology. in Journal of Cleaner Production. 2014;80:69-79.
doi:10.1016/j.jclepro.2014.05.060 .
Ranić, Marija, Nikolić, Marina, Pavlović, Marija, Buntić, Aneta, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Optimization of microwave-assisted extraction of natural antioxidants from spent espresso coffee grounds by response surface methodology" in Journal of Cleaner Production, 80 (2014):69-79,
https://doi.org/10.1016/j.jclepro.2014.05.060 . .
99
72
101

Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach

Buntić, Aneta; Pavlović, Marija; Mihajlovski, Katarina; Ranđelović, Milica; Rajić, Nevenka; Antonović, Dušan; Šiler-Marinković, Slavica; Dimitrijević-Branković, Suzana

(Springer International Publishing Ag, Cham, 2014)

TY  - JOUR
AU  - Buntić, Aneta
AU  - Pavlović, Marija
AU  - Mihajlovski, Katarina
AU  - Ranđelović, Milica
AU  - Rajić, Nevenka
AU  - Antonović, Dušan
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2793
AB  - Natural clinoptilolite from Zlatokop deposit, Serbia, was activated by microwave irradiations (10 min, 550 W) and its adsorptive efficiency for removal of crystal violet (CV) dye from aqueous solution was investigated. The process variables were specified by response surface method and the central composite design (CCD). Percentage of dye removal as a function of two numeric factors (the amount of zeolite and the concentration of crystal violet) with five values (rotatibility factor alpha = 0.41) and one numeric factor (contact or agitation time) with three values (rotatibility factor alpha = 1.00) at dynamic ambient conditions and pH = 6 was tested. The optimal conditions for 91.99 % decolorization were predicted to be 2 g of the zeolite in 100 ml of CV aqueous solution with concentration of 250 mg/l, and contact time of 678 s. The model was validated experimentally. Two isotherm models-Langmuir type 2 and Freundlich could describe the adsorption process with high correlation to experimental data. The calculated adsorbent capacity from the CCD (12.625 mg/g) showed a good agreement with the adsorption capacity obtained by Langmuir-2 isotherm (13.477 mg/g) and with pseudo-second-order kinetic model (12.404 mg/g).
PB  - Springer International Publishing Ag, Cham
T2  - Water Air and Soil Pollution
T1  - Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach
IS  - 1
VL  - 225
DO  - 10.1007/s11270-013-1816-6
ER  - 
@article{
author = "Buntić, Aneta and Pavlović, Marija and Mihajlovski, Katarina and Ranđelović, Milica and Rajić, Nevenka and Antonović, Dušan and Šiler-Marinković, Slavica and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "Natural clinoptilolite from Zlatokop deposit, Serbia, was activated by microwave irradiations (10 min, 550 W) and its adsorptive efficiency for removal of crystal violet (CV) dye from aqueous solution was investigated. The process variables were specified by response surface method and the central composite design (CCD). Percentage of dye removal as a function of two numeric factors (the amount of zeolite and the concentration of crystal violet) with five values (rotatibility factor alpha = 0.41) and one numeric factor (contact or agitation time) with three values (rotatibility factor alpha = 1.00) at dynamic ambient conditions and pH = 6 was tested. The optimal conditions for 91.99 % decolorization were predicted to be 2 g of the zeolite in 100 ml of CV aqueous solution with concentration of 250 mg/l, and contact time of 678 s. The model was validated experimentally. Two isotherm models-Langmuir type 2 and Freundlich could describe the adsorption process with high correlation to experimental data. The calculated adsorbent capacity from the CCD (12.625 mg/g) showed a good agreement with the adsorption capacity obtained by Langmuir-2 isotherm (13.477 mg/g) and with pseudo-second-order kinetic model (12.404 mg/g).",
publisher = "Springer International Publishing Ag, Cham",
journal = "Water Air and Soil Pollution",
title = "Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach",
number = "1",
volume = "225",
doi = "10.1007/s11270-013-1816-6"
}
Buntić, A., Pavlović, M., Mihajlovski, K., Ranđelović, M., Rajić, N., Antonović, D., Šiler-Marinković, S.,& Dimitrijević-Branković, S.. (2014). Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach. in Water Air and Soil Pollution
Springer International Publishing Ag, Cham., 225(1).
https://doi.org/10.1007/s11270-013-1816-6
Buntić A, Pavlović M, Mihajlovski K, Ranđelović M, Rajić N, Antonović D, Šiler-Marinković S, Dimitrijević-Branković S. Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach. in Water Air and Soil Pollution. 2014;225(1).
doi:10.1007/s11270-013-1816-6 .
Buntić, Aneta, Pavlović, Marija, Mihajlovski, Katarina, Ranđelović, Milica, Rajić, Nevenka, Antonović, Dušan, Šiler-Marinković, Slavica, Dimitrijević-Branković, Suzana, "Removal of a Cationic Dye from Aqueous Solution by Microwave Activated Clinoptilolite-Response Surface Methodology Approach" in Water Air and Soil Pollution, 225, no. 1 (2014),
https://doi.org/10.1007/s11270-013-1816-6 . .
8
8
13

Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense

Milutinović, Milica; Radovanović, Neda; Rajilić-Stojanović, Mirjana; Šiler-Marinković, Slavica; Dimitrijević, Snežana; Dimitrijević-Branković, Suzana

(Elsevier, Amsterdam, 2014)

TY  - JOUR
AU  - Milutinović, Milica
AU  - Radovanović, Neda
AU  - Rajilić-Stojanović, Mirjana
AU  - Šiler-Marinković, Slavica
AU  - Dimitrijević, Snežana
AU  - Dimitrijević-Branković, Suzana
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2736
AB  - Microwave-assisted extraction was optimised by the response surface methodology in order to enhance the extraction of polyphenols from Equisetum arvense (horsetail). Under the optimal conditions the total polyphenol content in extract reached a concentration of 161.57 mg of gallic acid equivalents per g of extract dry matter. The optimal conditions were reached with 54.5% of ethanol, 45.1 mL/g liquid/solid ratio, the microwave power of 170 Wand 80s extraction time. The antioxidant activity of obtained extract was evaluated by FRAP (ferric reducing antioxidant power) and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity assay. Since, the conditions that favoured maximum polyphenol content in extract were the same as the conditions that favoured maximum antioxidant activity, the polyphenols were identified as the predominant antioxidants in horsetail extracts. When compared to the conventional extraction method (solid liquid extraction for 12 h), our results showed that more polyphenols can be extracted from waste horsetail using microwave extraction and aqueous ethanol, for just 80s. The extracts obtained by optimised extraction procedure exhibit significant antioxidant activity and can be used as a natural source of antioxidants.
PB  - Elsevier, Amsterdam
T2  - Industrial Crops and Products
T1  - Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense
EP  - 397
SP  - 388
VL  - 61
DO  - 10.1016/j.indcrop.2014.07.039
ER  - 
@article{
author = "Milutinović, Milica and Radovanović, Neda and Rajilić-Stojanović, Mirjana and Šiler-Marinković, Slavica and Dimitrijević, Snežana and Dimitrijević-Branković, Suzana",
year = "2014",
abstract = "Microwave-assisted extraction was optimised by the response surface methodology in order to enhance the extraction of polyphenols from Equisetum arvense (horsetail). Under the optimal conditions the total polyphenol content in extract reached a concentration of 161.57 mg of gallic acid equivalents per g of extract dry matter. The optimal conditions were reached with 54.5% of ethanol, 45.1 mL/g liquid/solid ratio, the microwave power of 170 Wand 80s extraction time. The antioxidant activity of obtained extract was evaluated by FRAP (ferric reducing antioxidant power) and DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity assay. Since, the conditions that favoured maximum polyphenol content in extract were the same as the conditions that favoured maximum antioxidant activity, the polyphenols were identified as the predominant antioxidants in horsetail extracts. When compared to the conventional extraction method (solid liquid extraction for 12 h), our results showed that more polyphenols can be extracted from waste horsetail using microwave extraction and aqueous ethanol, for just 80s. The extracts obtained by optimised extraction procedure exhibit significant antioxidant activity and can be used as a natural source of antioxidants.",
publisher = "Elsevier, Amsterdam",
journal = "Industrial Crops and Products",
title = "Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense",
pages = "397-388",
volume = "61",
doi = "10.1016/j.indcrop.2014.07.039"
}
Milutinović, M., Radovanović, N., Rajilić-Stojanović, M., Šiler-Marinković, S., Dimitrijević, S.,& Dimitrijević-Branković, S.. (2014). Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense. in Industrial Crops and Products
Elsevier, Amsterdam., 61, 388-397.
https://doi.org/10.1016/j.indcrop.2014.07.039
Milutinović M, Radovanović N, Rajilić-Stojanović M, Šiler-Marinković S, Dimitrijević S, Dimitrijević-Branković S. Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense. in Industrial Crops and Products. 2014;61:388-397.
doi:10.1016/j.indcrop.2014.07.039 .
Milutinović, Milica, Radovanović, Neda, Rajilić-Stojanović, Mirjana, Šiler-Marinković, Slavica, Dimitrijević, Snežana, Dimitrijević-Branković, Suzana, "Microwave-assisted extraction for the recovery of antioxidants from waste Equisetum arvense" in Industrial Crops and Products, 61 (2014):388-397,
https://doi.org/10.1016/j.indcrop.2014.07.039 . .
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Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach

Miljković, Miona; Davidović, Slađana; Rajilić-Stojanović, Mirjana; Šiler-Marinković, Slavica S.; Dimitrijević-Branković, Suzana

(Serbian Chemical Society, 2013)

TY  - CONF
AU  - Miljković, Miona
AU  - Davidović, Slađana
AU  - Rajilić-Stojanović, Mirjana
AU  - Šiler-Marinković, Slavica S.
AU  - Dimitrijević-Branković, Suzana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6207
AB  - A leuconostoc strain was isolated from water kefir grains obtained from a household in Belgrade, Serbia. Strain was identified as Leuconostoc mesenteroides after biochemical and 16S rRNA sequencing studies. The isolated strain was found to produce dextransucrase. Culture medium and growth conditions for enzyme production were screened and optimized using the statistical design technique of Plackett-Burman [1]. Plackett-Burman design with variables viz. sucrose, yeast extract, beef extract, K2HPO4, Tween 80, incubation time, temperature and inoculum, was performed to screen main factors affecting enzyme production. Based on factorial design seventeen experiments were performed. Each factor was examined at two levels: -1 for low level and +1 for high level, and five center points were run to evaluate the linear and curvature effects of the variables.
The enzyme activity was measured by estimating the liberated reducing sugars using 3,5-dinitrosalicylic acid method [2].
Among tested factors positive effect gave K2HPO4, Tween 80 and sucrose. Dextransucrase activity varied from 0.52 to 4.81 U/ml. Maximum activity was acquired from medium contained 50 g/l sucrose, 10 g/l yeast extract, 15 g/l beef extract , 60 g/l K2HPO4, 2g/l Tween 80, inoculated with 2% overnight culture and cultivated at 23oC for 16h.
The resultats from statistical design technique of Plackett-Burman show that tested strain has high potential for dextransucrase production. Further optimization with positive factors should be done by the other statistical design technique, response surface methodology.
PB  - Serbian Chemical Society
C3  - ICOSECS 8 8th International Conference of the Chemical Societies of the South-East European Countries
T1  - Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach
SP  - 264
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6207
ER  - 
@conference{
author = "Miljković, Miona and Davidović, Slađana and Rajilić-Stojanović, Mirjana and Šiler-Marinković, Slavica S. and Dimitrijević-Branković, Suzana",
year = "2013",
abstract = "A leuconostoc strain was isolated from water kefir grains obtained from a household in Belgrade, Serbia. Strain was identified as Leuconostoc mesenteroides after biochemical and 16S rRNA sequencing studies. The isolated strain was found to produce dextransucrase. Culture medium and growth conditions for enzyme production were screened and optimized using the statistical design technique of Plackett-Burman [1]. Plackett-Burman design with variables viz. sucrose, yeast extract, beef extract, K2HPO4, Tween 80, incubation time, temperature and inoculum, was performed to screen main factors affecting enzyme production. Based on factorial design seventeen experiments were performed. Each factor was examined at two levels: -1 for low level and +1 for high level, and five center points were run to evaluate the linear and curvature effects of the variables.
The enzyme activity was measured by estimating the liberated reducing sugars using 3,5-dinitrosalicylic acid method [2].
Among tested factors positive effect gave K2HPO4, Tween 80 and sucrose. Dextransucrase activity varied from 0.52 to 4.81 U/ml. Maximum activity was acquired from medium contained 50 g/l sucrose, 10 g/l yeast extract, 15 g/l beef extract , 60 g/l K2HPO4, 2g/l Tween 80, inoculated with 2% overnight culture and cultivated at 23oC for 16h.
The resultats from statistical design technique of Plackett-Burman show that tested strain has high potential for dextransucrase production. Further optimization with positive factors should be done by the other statistical design technique, response surface methodology.",
publisher = "Serbian Chemical Society",
journal = "ICOSECS 8 8th International Conference of the Chemical Societies of the South-East European Countries",
title = "Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach",
pages = "264",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6207"
}
Miljković, M., Davidović, S., Rajilić-Stojanović, M., Šiler-Marinković, S. S.,& Dimitrijević-Branković, S.. (2013). Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach. in ICOSECS 8 8th International Conference of the Chemical Societies of the South-East European Countries
Serbian Chemical Society., 264.
https://hdl.handle.net/21.15107/rcub_technorep_6207
Miljković M, Davidović S, Rajilić-Stojanović M, Šiler-Marinković SS, Dimitrijević-Branković S. Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach. in ICOSECS 8 8th International Conference of the Chemical Societies of the South-East European Countries. 2013;:264.
https://hdl.handle.net/21.15107/rcub_technorep_6207 .
Miljković, Miona, Davidović, Slađana, Rajilić-Stojanović, Mirjana, Šiler-Marinković, Slavica S., Dimitrijević-Branković, Suzana, "Screening for factors affecting dextransucrase production from Leuconostoc mesenteroides isolated from water kefir grains using statistical approach" in ICOSECS 8 8th International Conference of the Chemical Societies of the South-East European Countries (2013):264,
https://hdl.handle.net/21.15107/rcub_technorep_6207 .

Fermentation of spent espresso coffee by Hymenobacter psychrotolerans

Milutinović, Milica; Pavlović, Marija; Šiler-Marinković, Slavica; Stojanović-Rajilić, Mirjana; Dimitrijević-Branković, Suzana

(Serbian Chemical Society, 2013)

TY  - CONF
AU  - Milutinović, Milica
AU  - Pavlović, Marija
AU  - Šiler-Marinković, Slavica
AU  - Stojanović-Rajilić, Mirjana
AU  - Dimitrijević-Branković, Suzana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6413
AB  - Spent coffee grounds are produced during espresso coffee preparation. This waste coffee contains significant amounts of biologically valuable ingredients such as antioxidants. The effect of fermentation by Hymenobacter psychrotolerans on the antioxidant activities and total polyphenol content of the spent espresso coffee extract was determined.
Samples of spent espresso coffee were inoculated with selected natural strain of Hymenobacter psychrotolerans. The strains were cultivated on the carboxymethyl cellulose (CMC) broth and the supernatant was separated from the cells. Both supernatant and the cells suspended in saline were used for the treatment of samples. The solid state-fermentation was carried out at 30°C for five days. Solvent for extraction was water and the extracts were evaporated in the spray-dryer. The total polyphenol content was determined by the Folin-Ciocalteu method [1,2]. The antioxidant activity was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity, and Ferric Reducing Antioxidant Power (FRAP) methods [2,3]. Inhibition of DPPH radicals was expressed as IC50 value. Results were compared to those of non-fermented control sample. Fermentation of spent coffee with supernatant showed the increased content of polyphenols, while sample fermented with cells had the same amount of polyphenols compared to the control sample. IC50 values of fermented samples were lower compared to the control sample that indicates that fermented samples had higher antioxidant activity. The IC50 (μg/ml) values were 37.66, 29.00 and 18.57 for the control sample, sample treated with supernatant and fermented by cells, respectively. The FRAP assay shows that the antioxidant activity of the extract, compared to the control sample, increased only in the case of supernatant treatment, while the other extract had lower antioxidant activity. Fermentation of spent espresso coffee with Hymenobacter psychrotolerans have improved its antioxidative properties which present a potential for its application in pharmaceutical and food industry.
PB  - Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija
T1  - Fermentation of spent espresso coffee by Hymenobacter psychrotolerans
SP  - 245
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6413
ER  - 
@conference{
author = "Milutinović, Milica and Pavlović, Marija and Šiler-Marinković, Slavica and Stojanović-Rajilić, Mirjana and Dimitrijević-Branković, Suzana",
year = "2013",
abstract = "Spent coffee grounds are produced during espresso coffee preparation. This waste coffee contains significant amounts of biologically valuable ingredients such as antioxidants. The effect of fermentation by Hymenobacter psychrotolerans on the antioxidant activities and total polyphenol content of the spent espresso coffee extract was determined.
Samples of spent espresso coffee were inoculated with selected natural strain of Hymenobacter psychrotolerans. The strains were cultivated on the carboxymethyl cellulose (CMC) broth and the supernatant was separated from the cells. Both supernatant and the cells suspended in saline were used for the treatment of samples. The solid state-fermentation was carried out at 30°C for five days. Solvent for extraction was water and the extracts were evaporated in the spray-dryer. The total polyphenol content was determined by the Folin-Ciocalteu method [1,2]. The antioxidant activity was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging capacity, and Ferric Reducing Antioxidant Power (FRAP) methods [2,3]. Inhibition of DPPH radicals was expressed as IC50 value. Results were compared to those of non-fermented control sample. Fermentation of spent coffee with supernatant showed the increased content of polyphenols, while sample fermented with cells had the same amount of polyphenols compared to the control sample. IC50 values of fermented samples were lower compared to the control sample that indicates that fermented samples had higher antioxidant activity. The IC50 (μg/ml) values were 37.66, 29.00 and 18.57 for the control sample, sample treated with supernatant and fermented by cells, respectively. The FRAP assay shows that the antioxidant activity of the extract, compared to the control sample, increased only in the case of supernatant treatment, while the other extract had lower antioxidant activity. Fermentation of spent espresso coffee with Hymenobacter psychrotolerans have improved its antioxidative properties which present a potential for its application in pharmaceutical and food industry.",
publisher = "Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija",
title = "Fermentation of spent espresso coffee by Hymenobacter psychrotolerans",
pages = "245",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6413"
}
Milutinović, M., Pavlović, M., Šiler-Marinković, S., Stojanović-Rajilić, M.,& Dimitrijević-Branković, S.. (2013). Fermentation of spent espresso coffee by Hymenobacter psychrotolerans. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija
Serbian Chemical Society., 245.
https://hdl.handle.net/21.15107/rcub_technorep_6413
Milutinović M, Pavlović M, Šiler-Marinković S, Stojanović-Rajilić M, Dimitrijević-Branković S. Fermentation of spent espresso coffee by Hymenobacter psychrotolerans. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija. 2013;:245.
https://hdl.handle.net/21.15107/rcub_technorep_6413 .
Milutinović, Milica, Pavlović, Marija, Šiler-Marinković, Slavica, Stojanović-Rajilić, Mirjana, Dimitrijević-Branković, Suzana, "Fermentation of spent espresso coffee by Hymenobacter psychrotolerans" in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija (2013):245,
https://hdl.handle.net/21.15107/rcub_technorep_6413 .

Adsorption of green tea polyphenols onto spent coffee grounds

Buntić, Aneta; Pavlović, Marija; Šiler-Marinković, Slavica; Antonović, Dušan; Dimitrijević-Branković, Suzana

(Serbian Chemical Society, 2013)

TY  - CONF
AU  - Buntić, Aneta
AU  - Pavlović, Marija
AU  - Šiler-Marinković, Slavica
AU  - Antonović, Dušan
AU  - Dimitrijević-Branković, Suzana
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6414
AB  - Some waste materials demonstrated considerable adsorption affinity for phenolic compounds. This property serves two purposes: the recovery and purification of bioactive compounds or fractions from plants, as well as treatment of wastewaters that are leaden by phenolics. This work presented the processing of solutions containing polyphenols by adsorption-desorption studies using spent coffee grounds. As a model system, green tea aqueous extract was prepared. The experiments were performed by batch sorption on a rotary shaker and dynamic column studies. 2 g of spent coffee sample was contacted with 100 ml of green tea extract solution for a predetermined period of time. The results were expressed as the residual total polyphenol concentration of tea extract, measured by the Folin - Ciocalteu method. Batch sorption studies showed a faster removal affinity, compared to column performance. After just 30 min of contact time, the removal percent of tea polyphenols by coffee residues amounted 40%. The desorption studies were also performed, and the results lead to effective purifying and concentrating of tea polyphenols for its further use.
As this study investigated the adsorbent capacity of no-cost waste material, such as spent coffee, for phenolic compounds binding, the obtained results were noticeable and offered numerous opportunities for a further experiments in this field.
PB  - Serbian Chemical Society
C3  - 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija
T1  - Adsorption of green tea polyphenols onto spent coffee grounds
SP  - 265
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6414
ER  - 
@conference{
author = "Buntić, Aneta and Pavlović, Marija and Šiler-Marinković, Slavica and Antonović, Dušan and Dimitrijević-Branković, Suzana",
year = "2013",
abstract = "Some waste materials demonstrated considerable adsorption affinity for phenolic compounds. This property serves two purposes: the recovery and purification of bioactive compounds or fractions from plants, as well as treatment of wastewaters that are leaden by phenolics. This work presented the processing of solutions containing polyphenols by adsorption-desorption studies using spent coffee grounds. As a model system, green tea aqueous extract was prepared. The experiments were performed by batch sorption on a rotary shaker and dynamic column studies. 2 g of spent coffee sample was contacted with 100 ml of green tea extract solution for a predetermined period of time. The results were expressed as the residual total polyphenol concentration of tea extract, measured by the Folin - Ciocalteu method. Batch sorption studies showed a faster removal affinity, compared to column performance. After just 30 min of contact time, the removal percent of tea polyphenols by coffee residues amounted 40%. The desorption studies were also performed, and the results lead to effective purifying and concentrating of tea polyphenols for its further use.
As this study investigated the adsorbent capacity of no-cost waste material, such as spent coffee, for phenolic compounds binding, the obtained results were noticeable and offered numerous opportunities for a further experiments in this field.",
publisher = "Serbian Chemical Society",
journal = "8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija",
title = "Adsorption of green tea polyphenols onto spent coffee grounds",
pages = "265",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6414"
}
Buntić, A., Pavlović, M., Šiler-Marinković, S., Antonović, D.,& Dimitrijević-Branković, S.. (2013). Adsorption of green tea polyphenols onto spent coffee grounds. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija
Serbian Chemical Society., 265.
https://hdl.handle.net/21.15107/rcub_technorep_6414
Buntić A, Pavlović M, Šiler-Marinković S, Antonović D, Dimitrijević-Branković S. Adsorption of green tea polyphenols onto spent coffee grounds. in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija. 2013;:265.
https://hdl.handle.net/21.15107/rcub_technorep_6414 .
Buntić, Aneta, Pavlović, Marija, Šiler-Marinković, Slavica, Antonović, Dušan, Dimitrijević-Branković, Suzana, "Adsorption of green tea polyphenols onto spent coffee grounds" in 8th International Conference of the Chemical Societies of the South-East European Countries - Icosecs 8, Beograd, Srbija (2013):265,
https://hdl.handle.net/21.15107/rcub_technorep_6414 .