TY  - JOUR
AU  - Pajnik, Jelena
AU  - Lukić, Ivana
AU  - Dikić, Jelena
AU  - Ašanin, Jelena
AU  - Gordić, Milan V.
AU  - Mišić, Dušan
AU  - Žižović, Irena
AU  - Korzeniowska, Malgorzata
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4442
AB  - In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO(2)) as a solvent. Experiments were performed at 35 degrees C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4-24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15-60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7-27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).
PB  - MDPI, Basel
T2  - Molecules
T1  - Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties
IS  - 20
VL  - 25
DO  - 10.3390/molecules25204717
ER  - 

@article{
author = "Pajnik, Jelena and Lukić, Ivana and Dikić, Jelena and Ašanin, Jelena and Gordić, Milan V. and Mišić, Dušan and Žižović, Irena and Korzeniowska, Malgorzata",
year = "2020",
abstract = "In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO(2)) as a solvent. Experiments were performed at 35 degrees C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4-24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15-60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7-27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).",
publisher = "MDPI, Basel",
journal = "Molecules",
title = "Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties",
number = "20",
volume = "25",
doi = "10.3390/molecules25204717"
}

Pajnik, J., Lukić, I., Dikić, J., Ašanin, J., Gordić, M. V., Mišić, D., Žižović, I.,& Korzeniowska, M.. (2020). Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties. in Molecules
MDPI, Basel., 25(20).
https://doi.org/10.3390/molecules25204717

Pajnik J, Lukić I, Dikić J, Ašanin J, Gordić MV, Mišić D, Žižović I, Korzeniowska M. Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties. in Molecules. 2020;25(20).
doi:10.3390/molecules25204717 .

Pajnik, Jelena, Lukić, Ivana, Dikić, Jelena, Ašanin, Jelena, Gordić, Milan V., Mišić, Dušan, Žižović, Irena, Korzeniowska, Malgorzata, "Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties" in Molecules, 25, no. 20 (2020),
https://doi.org/10.3390/molecules25204717 . .

TY  - JOUR
AU  - Radovanović, Neda
AU  - Malagurski, Ivana
AU  - Lević, Steva
AU  - Gordić, Milan V.
AU  - Petrović, Jelena
AU  - Pavlović, Vladimir B.
AU  - Mitrić, Miodrag
AU  - Nešić, Aleksandra
AU  - Dimitrijević-Branković, Suzana
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4054
AB  - New agar-based composite films with increasing Cu-carbonate and Cu-phosphate mineral phase content were prepared by in situ mineralization and solvent casting method. SEM and optical analysis revealed that Cu-carbonate phase had better compatibility with agar matrix than Cu-phosphate phase. Incorporation of both mineral phases improved mechanical and water vapor barrier properties of the obtained mineralized films, in concentration dependent manner. When 5 mM of carbonate precursor was incorporated into agar matrix, mechanical resistance was enchanced for 44% and water vapor barrier property for 40%. The release of Cu (II) was higher in acidic conditions for both mineralized composites and remained in the range of specific release limits for this metal. In addition, both mineralized composite films exhibited distinctive antimicrobial activity against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. Overall, the Cu-carbonate and Cu-phosphate mineralized agar films showed potential to be used for food packaging materials, agriculture or medical purposes.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - European Polymer Journal
T1  - Tailoring the physico-chemical and antimicrobial properties of agar-based films by in situ formation of Cu-mineral phase
EP  - 358
SP  - 352
VL  - 119
DO  - 10.1016/j.eurpolymj.2019.08.004
ER  - 

@article{
author = "Radovanović, Neda and Malagurski, Ivana and Lević, Steva and Gordić, Milan V. and Petrović, Jelena and Pavlović, Vladimir B. and Mitrić, Miodrag and Nešić, Aleksandra and Dimitrijević-Branković, Suzana",
year = "2019",
abstract = "New agar-based composite films with increasing Cu-carbonate and Cu-phosphate mineral phase content were prepared by in situ mineralization and solvent casting method. SEM and optical analysis revealed that Cu-carbonate phase had better compatibility with agar matrix than Cu-phosphate phase. Incorporation of both mineral phases improved mechanical and water vapor barrier properties of the obtained mineralized films, in concentration dependent manner. When 5 mM of carbonate precursor was incorporated into agar matrix, mechanical resistance was enchanced for 44% and water vapor barrier property for 40%. The release of Cu (II) was higher in acidic conditions for both mineralized composites and remained in the range of specific release limits for this metal. In addition, both mineralized composite films exhibited distinctive antimicrobial activity against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. Overall, the Cu-carbonate and Cu-phosphate mineralized agar films showed potential to be used for food packaging materials, agriculture or medical purposes.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "European Polymer Journal",
title = "Tailoring the physico-chemical and antimicrobial properties of agar-based films by in situ formation of Cu-mineral phase",
pages = "358-352",
volume = "119",
doi = "10.1016/j.eurpolymj.2019.08.004"
}

Radovanović, N., Malagurski, I., Lević, S., Gordić, M. V., Petrović, J., Pavlović, V. B., Mitrić, M., Nešić, A.,& Dimitrijević-Branković, S.. (2019). Tailoring the physico-chemical and antimicrobial properties of agar-based films by in situ formation of Cu-mineral phase. in European Polymer Journal
Pergamon-Elsevier Science Ltd, Oxford., 119, 352-358.
https://doi.org/10.1016/j.eurpolymj.2019.08.004

Radovanović N, Malagurski I, Lević S, Gordić MV, Petrović J, Pavlović VB, Mitrić M, Nešić A, Dimitrijević-Branković S. Tailoring the physico-chemical and antimicrobial properties of agar-based films by in situ formation of Cu-mineral phase. in European Polymer Journal. 2019;119:352-358.
doi:10.1016/j.eurpolymj.2019.08.004 .

Radovanović, Neda, Malagurski, Ivana, Lević, Steva, Gordić, Milan V., Petrović, Jelena, Pavlović, Vladimir B., Mitrić, Miodrag, Nešić, Aleksandra, Dimitrijević-Branković, Suzana, "Tailoring the physico-chemical and antimicrobial properties of agar-based films by in situ formation of Cu-mineral phase" in European Polymer Journal, 119 (2019):352-358,
https://doi.org/10.1016/j.eurpolymj.2019.08.004 . .

TY  - JOUR
AU  - Davidović, Slađana
AU  - Lazić, Vesna M.
AU  - Miljković, Miona
AU  - Gordić, Milan V.
AU  - Sekulić, Milica
AU  - Marinović-Cincović, Milena
AU  - Ratnayake, Ishara S.
AU  - Ahrenkiel, Scott Phillip
AU  - Nedeljković, Jovan
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4081
AB  - The antibacterial ability of in situ prepared nanometer-sized silver particles, immobilized in agar-agar films, was studied as a function of the concentration of co-dopant, magnesium ions. Content of inorganic components in hybrid films was determined using inductively coupled plasma optic emission spectroscopy, and found to be low (  lt  2 wt.-%). Morphology of prepared hybrid films, studied by transmission electron microscopy, revealed the presence of non-agglomerated and randomly distributed 10-20 nm silver nanoparticles (Ag NPs) within the agar-agar matrices. Fourier-transform infrared spectroscopy indicated the distinct chemical interaction between Ag NPs and polymer chains. Thermogravimetric analysis, as well as the determination of tensile strength, Young's modulus, and elongation at break showed improvement of thermal stability and mechanical properties of agar-agar matrices upon the incorporation of Ag NPs due to high compatibility between the hydrophilic organic component and inorganic components. The complete microbial reduction of Gram-positive bacteria Staphylococcus aureus was observed for all agar-silver films, while satisfactory results were observed for Gram-negative bacteria Pseudomonas aeruginosa (  gt = 99.6%). The release of Ag+ ions is suppressed by the increase of the concentration of Mg2+ ions and it was found to be significantly smaller (  lt = 0.24 ppm) than the harmful ecological level (1 ppm).
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions
VL  - 224
DO  - 10.1016/j.carbpol.2019.115187
ER  - 

@article{
author = "Davidović, Slađana and Lazić, Vesna M. and Miljković, Miona and Gordić, Milan V. and Sekulić, Milica and Marinović-Cincović, Milena and Ratnayake, Ishara S. and Ahrenkiel, Scott Phillip and Nedeljković, Jovan",
year = "2019",
abstract = "The antibacterial ability of in situ prepared nanometer-sized silver particles, immobilized in agar-agar films, was studied as a function of the concentration of co-dopant, magnesium ions. Content of inorganic components in hybrid films was determined using inductively coupled plasma optic emission spectroscopy, and found to be low (  lt  2 wt.-%). Morphology of prepared hybrid films, studied by transmission electron microscopy, revealed the presence of non-agglomerated and randomly distributed 10-20 nm silver nanoparticles (Ag NPs) within the agar-agar matrices. Fourier-transform infrared spectroscopy indicated the distinct chemical interaction between Ag NPs and polymer chains. Thermogravimetric analysis, as well as the determination of tensile strength, Young's modulus, and elongation at break showed improvement of thermal stability and mechanical properties of agar-agar matrices upon the incorporation of Ag NPs due to high compatibility between the hydrophilic organic component and inorganic components. The complete microbial reduction of Gram-positive bacteria Staphylococcus aureus was observed for all agar-silver films, while satisfactory results were observed for Gram-negative bacteria Pseudomonas aeruginosa (  gt = 99.6%). The release of Ag+ ions is suppressed by the increase of the concentration of Mg2+ ions and it was found to be significantly smaller (  lt = 0.24 ppm) than the harmful ecological level (1 ppm).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions",
volume = "224",
doi = "10.1016/j.carbpol.2019.115187"
}

Davidović, S., Lazić, V. M., Miljković, M., Gordić, M. V., Sekulić, M., Marinović-Cincović, M., Ratnayake, I. S., Ahrenkiel, S. P.,& Nedeljković, J.. (2019). Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 224.
https://doi.org/10.1016/j.carbpol.2019.115187

Davidović S, Lazić VM, Miljković M, Gordić MV, Sekulić M, Marinović-Cincović M, Ratnayake IS, Ahrenkiel SP, Nedeljković J. Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions. in Carbohydrate Polymers. 2019;224.
doi:10.1016/j.carbpol.2019.115187 .

Davidović, Slađana, Lazić, Vesna M., Miljković, Miona, Gordić, Milan V., Sekulić, Milica, Marinović-Cincović, Milena, Ratnayake, Ishara S., Ahrenkiel, Scott Phillip, Nedeljković, Jovan, "Antibacterial ability of immobilized silver nanoparticles in agar-agar films co-doped with magnesium ions" in Carbohydrate Polymers, 224 (2019),
https://doi.org/10.1016/j.carbpol.2019.115187 . .

TY  - CONF
AU  - Radovanović, Neda
AU  - Miljković, Miona
AU  - Davidović, Slađana
AU  - Malagurski, Ivana
AU  - Gordić, Milan
AU  - Nešić, Aleksandra
AU  - Dimitrijević-Branković, Suzana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6286
C3  - Polychar 26 World Forum on Advanced Materials
T1  - ACTIVE AGAR MINERALIZED COMPOSITE FILMS INTENDED FOR FOOD PACKAGING
SP  - 94
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6286
ER  - 

@conference{
author = "Radovanović, Neda and Miljković, Miona and Davidović, Slađana and Malagurski, Ivana and Gordić, Milan and Nešić, Aleksandra and Dimitrijević-Branković, Suzana",
year = "2018",
journal = "Polychar 26 World Forum on Advanced Materials",
title = "ACTIVE AGAR MINERALIZED COMPOSITE FILMS INTENDED FOR FOOD PACKAGING",
pages = "94",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6286"
}

Radovanović, N., Miljković, M., Davidović, S., Malagurski, I., Gordić, M., Nešić, A.,& Dimitrijević-Branković, S.. (2018). ACTIVE AGAR MINERALIZED COMPOSITE FILMS INTENDED FOR FOOD PACKAGING. in Polychar 26 World Forum on Advanced Materials, 94.
https://hdl.handle.net/21.15107/rcub_technorep_6286

Radovanović N, Miljković M, Davidović S, Malagurski I, Gordić M, Nešić A, Dimitrijević-Branković S. ACTIVE AGAR MINERALIZED COMPOSITE FILMS INTENDED FOR FOOD PACKAGING. in Polychar 26 World Forum on Advanced Materials. 2018;:94.
https://hdl.handle.net/21.15107/rcub_technorep_6286 .

Radovanović, Neda, Miljković, Miona, Davidović, Slađana, Malagurski, Ivana, Gordić, Milan, Nešić, Aleksandra, Dimitrijević-Branković, Suzana, "ACTIVE AGAR MINERALIZED COMPOSITE FILMS INTENDED FOR FOOD PACKAGING" in Polychar 26 World Forum on Advanced Materials (2018):94,
https://hdl.handle.net/21.15107/rcub_technorep_6286 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Gordić, Milan V.
AU  - Davidović, Slađana
AU  - Radovanović, Željko
AU  - Nedeljković, Jovan
AU  - Smirnova, Irina
AU  - Gurikov, Pavel
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4006
AB  - Environmental-friendly pectin-TiO2 nanocomposite aerogels were prepared via sol-gel process and subsequent drying under supercritical conditions. The first step includes dissolution of pectin in water, addition of proper amount of TiO2 colloid and crosslinking reaction induced in the presence of tert-butanol and zinc ions. Then, the gels are subjected to the solvent exchange and supercritical CO2 drying. The influence of TiO2 nanoparticles on the textural, mechanical, thermal and antibacterial properties of aerogels was investigated. Results indicate that in the presence of TiO2 nanoparticles (NPs) mechanical, thermal and antimicrobial properties of pectin-based aerogels are improved in comparison to the control pectin aerogels. It should be emphasized that the thermal conductivity of pectin-based aerogels (0.022-0.025Wm(-1) K-1) is lower than the thermal conductivity of air. Generally, the results propose that the pectin-TiO2 nanocomposite aerogels, as bio-based material, might have potential application for the storage of temperature-sensitive food.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Pectin-based nanocomposite aerogels for potential insulated food packaging application
EP  - 135
SP  - 128
VL  - 195
DO  - 10.1016/j.carbpol.2018.04.076
ER  - 

@article{
author = "Nešić, Aleksandra and Gordić, Milan V. and Davidović, Slađana and Radovanović, Željko and Nedeljković, Jovan and Smirnova, Irina and Gurikov, Pavel",
year = "2018",
abstract = "Environmental-friendly pectin-TiO2 nanocomposite aerogels were prepared via sol-gel process and subsequent drying under supercritical conditions. The first step includes dissolution of pectin in water, addition of proper amount of TiO2 colloid and crosslinking reaction induced in the presence of tert-butanol and zinc ions. Then, the gels are subjected to the solvent exchange and supercritical CO2 drying. The influence of TiO2 nanoparticles on the textural, mechanical, thermal and antibacterial properties of aerogels was investigated. Results indicate that in the presence of TiO2 nanoparticles (NPs) mechanical, thermal and antimicrobial properties of pectin-based aerogels are improved in comparison to the control pectin aerogels. It should be emphasized that the thermal conductivity of pectin-based aerogels (0.022-0.025Wm(-1) K-1) is lower than the thermal conductivity of air. Generally, the results propose that the pectin-TiO2 nanocomposite aerogels, as bio-based material, might have potential application for the storage of temperature-sensitive food.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Pectin-based nanocomposite aerogels for potential insulated food packaging application",
pages = "135-128",
volume = "195",
doi = "10.1016/j.carbpol.2018.04.076"
}

Nešić, A., Gordić, M. V., Davidović, S., Radovanović, Ž., Nedeljković, J., Smirnova, I.,& Gurikov, P.. (2018). Pectin-based nanocomposite aerogels for potential insulated food packaging application. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 195, 128-135.
https://doi.org/10.1016/j.carbpol.2018.04.076

Nešić A, Gordić MV, Davidović S, Radovanović Ž, Nedeljković J, Smirnova I, Gurikov P. Pectin-based nanocomposite aerogels for potential insulated food packaging application. in Carbohydrate Polymers. 2018;195:128-135.
doi:10.1016/j.carbpol.2018.04.076 .

Nešić, Aleksandra, Gordić, Milan V., Davidović, Slađana, Radovanović, Željko, Nedeljković, Jovan, Smirnova, Irina, Gurikov, Pavel, "Pectin-based nanocomposite aerogels for potential insulated food packaging application" in Carbohydrate Polymers, 195 (2018):128-135,
https://doi.org/10.1016/j.carbpol.2018.04.076 . .

TY  - JOUR
AU  - Davidović, Slađana
AU  - Miljković, Miona
AU  - Tomić, Miloš
AU  - Gordić, Milan V.
AU  - Nešić, Aleksandra
AU  - Dimitrijević, Suzana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4017
AB  - The aim of this study was to develop dextran-based edible films plasticized by sorbitol. In order to optimise the film-forming formulation, response surface methodology was used. The influence of dextran and sorbitol concentration on the mechanical and water vapour barrier properties of obtained films was investigated. The results showed that both parameters exhibited significant effect on the water vapour permeability of a film. Both dextran and sorbitol concentration had significant influence on tensile strength and elongation at break, whereas only sorbitol concentration had significant effect on Young's modulus. After optimisation by desirability approach, it was found that a film made of 3.40 wt% of dextran and 20.43 wt% of sorbitol showed the lowest water vapour permeability and the highest tensile strength and elasticity.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Response surface methodology for optimisation of edible coatings based on dextran from Leuconostoc mesenteroides T3
EP  - 213
SP  - 207
VL  - 184
DO  - 10.1016/j.carbpol.2017.12.061
ER  - 

@article{
author = "Davidović, Slađana and Miljković, Miona and Tomić, Miloš and Gordić, Milan V. and Nešić, Aleksandra and Dimitrijević, Suzana",
year = "2018",
abstract = "The aim of this study was to develop dextran-based edible films plasticized by sorbitol. In order to optimise the film-forming formulation, response surface methodology was used. The influence of dextran and sorbitol concentration on the mechanical and water vapour barrier properties of obtained films was investigated. The results showed that both parameters exhibited significant effect on the water vapour permeability of a film. Both dextran and sorbitol concentration had significant influence on tensile strength and elongation at break, whereas only sorbitol concentration had significant effect on Young's modulus. After optimisation by desirability approach, it was found that a film made of 3.40 wt% of dextran and 20.43 wt% of sorbitol showed the lowest water vapour permeability and the highest tensile strength and elasticity.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Response surface methodology for optimisation of edible coatings based on dextran from Leuconostoc mesenteroides T3",
pages = "213-207",
volume = "184",
doi = "10.1016/j.carbpol.2017.12.061"
}

Davidović, S., Miljković, M., Tomić, M., Gordić, M. V., Nešić, A.,& Dimitrijević, S.. (2018). Response surface methodology for optimisation of edible coatings based on dextran from Leuconostoc mesenteroides T3. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 184, 207-213.
https://doi.org/10.1016/j.carbpol.2017.12.061

Davidović S, Miljković M, Tomić M, Gordić MV, Nešić A, Dimitrijević S. Response surface methodology for optimisation of edible coatings based on dextran from Leuconostoc mesenteroides T3. in Carbohydrate Polymers. 2018;184:207-213.
doi:10.1016/j.carbpol.2017.12.061 .

Davidović, Slađana, Miljković, Miona, Tomić, Miloš, Gordić, Milan V., Nešić, Aleksandra, Dimitrijević, Suzana, "Response surface methodology for optimisation of edible coatings based on dextran from Leuconostoc mesenteroides T3" in Carbohydrate Polymers, 184 (2018):207-213,
https://doi.org/10.1016/j.carbpol.2017.12.061 . .

TY  - CONF
AU  - Davidović, Slađana
AU  - Miljković, Miona
AU  - Radovanović, Neda
AU  - Gordić, Milan
AU  - Nešić, Aleksandra
AU  - Dimitrijević, Suzana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6204
AB  - Current trends in food biotechnology are focused on replacing synthetic polymers used for food packages by the natural ones. Biopolymers are made by sustainable processes in a cheap way. Moreover, they are nontoxic and can serve as a good alternative to traditional (petroleum) food packaging, due to great film-formation properties in a form of edible films and coatings for food products. Various polysaccharides, proteins, and lipids have been intensively investigated as edible materials that could improve the food quality, freshness, and provide food safety. However, natural polymers usually lack of antioxidative and/or antimicrobial properties. Therefore, many synthetic and natural additives can be incorporated into edible films. Among them, extracts of medicinal plants are giving more attention due to their safeness and proved health benefits.
The aim of this study was to obtain edible films based on dextran, with antioxidative and antimicrobial properties. Dextran obtained in our lab was used for preparing edible film with sorbitol as a plasticizer, while pulverized waste biomass obtained from the processing of medicinal herb yarrow (Achillea millefolium) was used as a source of polyphenols. It has previously been shown1 that dextran based films had excellent mechanical and water vapor barrier properties. In this work, spray dried ethanol extract of Achillea millefolium dust (AME) was incorporated into dextran films in concentrations 2, 3, and 4% (w/v). The composite films were analyzed regarding antioxidative, antimicrobial, and mechanical properties. All films showed high antioxidative activity (90% reduction of DPPH radical). However, to obtain high antimicrobial activity (higher than 50%), 4% of AME was required. Composite films showed antimicrobial activity against three Gram-positive bacteria (Staphylococcus aureus, Listeria monocytogenes and Enterococcus faecalis and one Gram-negative bacterium (Pseudomonas aeruginosa). Incorporation of AME into dextran film showed positive effect on tensile strength and negative effect on elongation. Composite film with the best mechanical properties (tensile strength 3.5 MPa and elongation at break 37%) was the film containing 4% AME.
C3  - Polychar 26 World Forum on Advanced Materials
T1  - ANTIOXIDANT AND ANTIMICROBIAL EDIBLE FILMS BASED ON DEXTRAN CONTAINING POLYPHENOLS FROM YARROW EXTRACT
SP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6204
ER  - 

@conference{
author = "Davidović, Slađana and Miljković, Miona and Radovanović, Neda and Gordić, Milan and Nešić, Aleksandra and Dimitrijević, Suzana",
year = "2018",
abstract = "Current trends in food biotechnology are focused on replacing synthetic polymers used for food packages by the natural ones. Biopolymers are made by sustainable processes in a cheap way. Moreover, they are nontoxic and can serve as a good alternative to traditional (petroleum) food packaging, due to great film-formation properties in a form of edible films and coatings for food products. Various polysaccharides, proteins, and lipids have been intensively investigated as edible materials that could improve the food quality, freshness, and provide food safety. However, natural polymers usually lack of antioxidative and/or antimicrobial properties. Therefore, many synthetic and natural additives can be incorporated into edible films. Among them, extracts of medicinal plants are giving more attention due to their safeness and proved health benefits.
The aim of this study was to obtain edible films based on dextran, with antioxidative and antimicrobial properties. Dextran obtained in our lab was used for preparing edible film with sorbitol as a plasticizer, while pulverized waste biomass obtained from the processing of medicinal herb yarrow (Achillea millefolium) was used as a source of polyphenols. It has previously been shown1 that dextran based films had excellent mechanical and water vapor barrier properties. In this work, spray dried ethanol extract of Achillea millefolium dust (AME) was incorporated into dextran films in concentrations 2, 3, and 4% (w/v). The composite films were analyzed regarding antioxidative, antimicrobial, and mechanical properties. All films showed high antioxidative activity (90% reduction of DPPH radical). However, to obtain high antimicrobial activity (higher than 50%), 4% of AME was required. Composite films showed antimicrobial activity against three Gram-positive bacteria (Staphylococcus aureus, Listeria monocytogenes and Enterococcus faecalis and one Gram-negative bacterium (Pseudomonas aeruginosa). Incorporation of AME into dextran film showed positive effect on tensile strength and negative effect on elongation. Composite film with the best mechanical properties (tensile strength 3.5 MPa and elongation at break 37%) was the film containing 4% AME.",
journal = "Polychar 26 World Forum on Advanced Materials",
title = "ANTIOXIDANT AND ANTIMICROBIAL EDIBLE FILMS BASED ON DEXTRAN CONTAINING POLYPHENOLS FROM YARROW EXTRACT",
pages = "72",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6204"
}

Davidović, S., Miljković, M., Radovanović, N., Gordić, M., Nešić, A.,& Dimitrijević, S.. (2018). ANTIOXIDANT AND ANTIMICROBIAL EDIBLE FILMS BASED ON DEXTRAN CONTAINING POLYPHENOLS FROM YARROW EXTRACT. in Polychar 26 World Forum on Advanced Materials, 72.
https://hdl.handle.net/21.15107/rcub_technorep_6204

Davidović S, Miljković M, Radovanović N, Gordić M, Nešić A, Dimitrijević S. ANTIOXIDANT AND ANTIMICROBIAL EDIBLE FILMS BASED ON DEXTRAN CONTAINING POLYPHENOLS FROM YARROW EXTRACT. in Polychar 26 World Forum on Advanced Materials. 2018;:72.
https://hdl.handle.net/21.15107/rcub_technorep_6204 .

Davidović, Slađana, Miljković, Miona, Radovanović, Neda, Gordić, Milan, Nešić, Aleksandra, Dimitrijević, Suzana, "ANTIOXIDANT AND ANTIMICROBIAL EDIBLE FILMS BASED ON DEXTRAN CONTAINING POLYPHENOLS FROM YARROW EXTRACT" in Polychar 26 World Forum on Advanced Materials (2018):72,
https://hdl.handle.net/21.15107/rcub_technorep_6204 .

TY  - CONF
AU  - Miljković, Miona
AU  - Davidović, Slađana
AU  - Radovanović, Neda
AU  - Gordić, Milan
AU  - Carević, Milica
AU  - Nešić, Aleksandra
AU  - Dimitrijević, Suzana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6239
AB  - Dextransucrase (DS), the extracellular enzyme is of immense industrial importance, due to ability to produce dextran and oligosaccharides (OS). Worldwide interest in OS has been increasing, since they have been accorded the prebiotic status. However, the industrial application of DS for OS synthesis is limited, due to low yield of enzyme production and its low catalytic activity. Hence, there is a great interest for development of new technologies that can provide improved performance of biocatalyst. Enzyme immobilization technology is considered to be a crucial step for cheaper and more efficient usage of DS. Entrapment is one of the widely investigated immobilization methods, where enzymes are enclosed or confined within the polymer matrix without altering their native structure, developing bioreactors for commercial applications. Different matrices such as polyacryl-amide gel, alginate beads and agar–agar have been used for the entrapment of different enzymes and among them agar–agar is a biocompatible, non-toxic and strong solidifying agent for immobilization of various enzymes.
In this work, the entrapment of DS was initiated by different quantity (1:9, 1:4 and 1:1) of dialyzed enzyme into agar- agar solution. Agar solution was prepared in distilled water by vigorous shaking at 100°C, autoclaved and was allowed to cool to 40–45°C. Afterwards, enzyme was incorporated and mixed thoroughly. This mixture was immediately poured into a clean Petri plate and left to solidify at room temperature. Polymer films with and without immobilized DS were analyzed in terms of enzyme activity and reusability and mechanical properties (tensile strength, elongation at break and elastic modulus). In order to remove un-entrapped enzyme the films were washed with double deionized water and sodium acetate buffer (pH 5.4) three times prior to enzymatic assay. For quantitative analysis of samples for OS production a Dionex Ultimate 3000 HPLC system was used. 
Results showed that maximum immobilization yield (74.11%) was achieved by use of 2 % agar and (1:9) enzyme: agar ratio. HPLC analysis confirmed the similar trend of OS formation in immobilized samples compared to free enzyme. The lowest tested fraction of enzyme immobilized into polymer matrix (1:9) improved tensile strength of films in comparison with control film, whereas higher concentration of enzyme led to decrease in mechanical resistance of films. Scanning electron microscopy of agar films before and after DS entrapment revealed significant morphological change on the matrix surface. Considering the economic feasibility, the entrapped DS indicated imperative recycling efficiency up to six reaction cycles. The results of this study revealed that an easily available and inexpensive matrix could be successfully employed for DS immobilization and OS production.
C3  - PolyChar 26 World Forum on Advanced Materials
T1  - DEXTRANSUCRASE ENTRAPMENT AS AN EFFICIENT ALTERNATIVE FOR INCREASED RECYCLING EFFICIENCY OF FREE ENZYME WITHIN AGAR-AGAR FILM MATRIX
SP  - 88
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6239
ER  - 

@conference{
author = "Miljković, Miona and Davidović, Slađana and Radovanović, Neda and Gordić, Milan and Carević, Milica and Nešić, Aleksandra and Dimitrijević, Suzana",
year = "2018",
abstract = "Dextransucrase (DS), the extracellular enzyme is of immense industrial importance, due to ability to produce dextran and oligosaccharides (OS). Worldwide interest in OS has been increasing, since they have been accorded the prebiotic status. However, the industrial application of DS for OS synthesis is limited, due to low yield of enzyme production and its low catalytic activity. Hence, there is a great interest for development of new technologies that can provide improved performance of biocatalyst. Enzyme immobilization technology is considered to be a crucial step for cheaper and more efficient usage of DS. Entrapment is one of the widely investigated immobilization methods, where enzymes are enclosed or confined within the polymer matrix without altering their native structure, developing bioreactors for commercial applications. Different matrices such as polyacryl-amide gel, alginate beads and agar–agar have been used for the entrapment of different enzymes and among them agar–agar is a biocompatible, non-toxic and strong solidifying agent for immobilization of various enzymes.
In this work, the entrapment of DS was initiated by different quantity (1:9, 1:4 and 1:1) of dialyzed enzyme into agar- agar solution. Agar solution was prepared in distilled water by vigorous shaking at 100°C, autoclaved and was allowed to cool to 40–45°C. Afterwards, enzyme was incorporated and mixed thoroughly. This mixture was immediately poured into a clean Petri plate and left to solidify at room temperature. Polymer films with and without immobilized DS were analyzed in terms of enzyme activity and reusability and mechanical properties (tensile strength, elongation at break and elastic modulus). In order to remove un-entrapped enzyme the films were washed with double deionized water and sodium acetate buffer (pH 5.4) three times prior to enzymatic assay. For quantitative analysis of samples for OS production a Dionex Ultimate 3000 HPLC system was used. 
Results showed that maximum immobilization yield (74.11%) was achieved by use of 2 % agar and (1:9) enzyme: agar ratio. HPLC analysis confirmed the similar trend of OS formation in immobilized samples compared to free enzyme. The lowest tested fraction of enzyme immobilized into polymer matrix (1:9) improved tensile strength of films in comparison with control film, whereas higher concentration of enzyme led to decrease in mechanical resistance of films. Scanning electron microscopy of agar films before and after DS entrapment revealed significant morphological change on the matrix surface. Considering the economic feasibility, the entrapped DS indicated imperative recycling efficiency up to six reaction cycles. The results of this study revealed that an easily available and inexpensive matrix could be successfully employed for DS immobilization and OS production.",
journal = "PolyChar 26 World Forum on Advanced Materials",
title = "DEXTRANSUCRASE ENTRAPMENT AS AN EFFICIENT ALTERNATIVE FOR INCREASED RECYCLING EFFICIENCY OF FREE ENZYME WITHIN AGAR-AGAR FILM MATRIX",
pages = "88",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6239"
}

Miljković, M., Davidović, S., Radovanović, N., Gordić, M., Carević, M., Nešić, A.,& Dimitrijević, S.. (2018). DEXTRANSUCRASE ENTRAPMENT AS AN EFFICIENT ALTERNATIVE FOR INCREASED RECYCLING EFFICIENCY OF FREE ENZYME WITHIN AGAR-AGAR FILM MATRIX. in PolyChar 26 World Forum on Advanced Materials, 88.
https://hdl.handle.net/21.15107/rcub_technorep_6239

Miljković M, Davidović S, Radovanović N, Gordić M, Carević M, Nešić A, Dimitrijević S. DEXTRANSUCRASE ENTRAPMENT AS AN EFFICIENT ALTERNATIVE FOR INCREASED RECYCLING EFFICIENCY OF FREE ENZYME WITHIN AGAR-AGAR FILM MATRIX. in PolyChar 26 World Forum on Advanced Materials. 2018;:88.
https://hdl.handle.net/21.15107/rcub_technorep_6239 .

Miljković, Miona, Davidović, Slađana, Radovanović, Neda, Gordić, Milan, Carević, Milica, Nešić, Aleksandra, Dimitrijević, Suzana, "DEXTRANSUCRASE ENTRAPMENT AS AN EFFICIENT ALTERNATIVE FOR INCREASED RECYCLING EFFICIENCY OF FREE ENZYME WITHIN AGAR-AGAR FILM MATRIX" in PolyChar 26 World Forum on Advanced Materials (2018):88,
https://hdl.handle.net/21.15107/rcub_technorep_6239 .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Gordić, Milan V.
AU  - Onjia, Antonije
AU  - Davidović, Slađana
AU  - Miljković, Miona
AU  - Dimitrijević-Branković, Suzana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3665
AB  - In this work, antimicrobial bioinspired films made from chitosan incorporated with triclosan were investigated. The tensile strenght of these films were in the range of 33 and 39 MPa, which presented satisfied mechanical stability comparable to the synthetic-based packages commonly used in industry. The addition of triclosan enhanced thermal stability and antimicrobial activity of chitosan films against Escherichia coli and Staphylococus aureus. Results obtained in this work demonstrated that chitosan/triclosan films could be potentially used as an eco-sustainable package in healthcare sector to prevent infections/contaminations.
PB  - Elsevier, Amsterdam
T2  - Materials Letters
T1  - Chitosan-triclosan films for potential use as bio-antimicrobial bags in healthcare sector
EP  - 371
SP  - 368
VL  - 186
DO  - 10.1016/j.matlet.2016.10.028
ER  - 

@article{
author = "Nešić, Aleksandra and Gordić, Milan V. and Onjia, Antonije and Davidović, Slađana and Miljković, Miona and Dimitrijević-Branković, Suzana",
year = "2017",
abstract = "In this work, antimicrobial bioinspired films made from chitosan incorporated with triclosan were investigated. The tensile strenght of these films were in the range of 33 and 39 MPa, which presented satisfied mechanical stability comparable to the synthetic-based packages commonly used in industry. The addition of triclosan enhanced thermal stability and antimicrobial activity of chitosan films against Escherichia coli and Staphylococus aureus. Results obtained in this work demonstrated that chitosan/triclosan films could be potentially used as an eco-sustainable package in healthcare sector to prevent infections/contaminations.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Letters",
title = "Chitosan-triclosan films for potential use as bio-antimicrobial bags in healthcare sector",
pages = "371-368",
volume = "186",
doi = "10.1016/j.matlet.2016.10.028"
}

Nešić, A., Gordić, M. V., Onjia, A., Davidović, S., Miljković, M.,& Dimitrijević-Branković, S.. (2017). Chitosan-triclosan films for potential use as bio-antimicrobial bags in healthcare sector. in Materials Letters
Elsevier, Amsterdam., 186, 368-371.
https://doi.org/10.1016/j.matlet.2016.10.028

Nešić A, Gordić MV, Onjia A, Davidović S, Miljković M, Dimitrijević-Branković S. Chitosan-triclosan films for potential use as bio-antimicrobial bags in healthcare sector. in Materials Letters. 2017;186:368-371.
doi:10.1016/j.matlet.2016.10.028 .

Nešić, Aleksandra, Gordić, Milan V., Onjia, Antonije, Davidović, Slađana, Miljković, Miona, Dimitrijević-Branković, Suzana, "Chitosan-triclosan films for potential use as bio-antimicrobial bags in healthcare sector" in Materials Letters, 186 (2017):368-371,
https://doi.org/10.1016/j.matlet.2016.10.028 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Ružić, Jovana
AU  - Gordić, Milan V.
AU  - Ostojić, Sanja
AU  - Micić, Darko
AU  - Onjia, Antonije
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3696
AB  - In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).
PB  - Elsevier Sci Ltd, Oxford
T2  - Composites Part B-Engineering
T1  - Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials
EP  - 61
SP  - 56
VL  - 110
DO  - 10.1016/j.compositesb.2016.11.016
ER  - 

@article{
author = "Nešić, Aleksandra and Ružić, Jovana and Gordić, Milan V. and Ostojić, Sanja and Micić, Darko and Onjia, Antonije",
year = "2017",
abstract = "In this work, the new biodegradable blend films composed of natural polymer pectin and synthetic polymer polyvinylpyrrolidone were obtained through casting process. The concentration of glycerol in all formulations was constant (2% v/v), while the amount of polyvinylpyrrolidone varied from 20 to 60% by mass of pectin. The molecular interactions between two components were elucidated by FTIR-ATR spectroscopy, while functional properties of these films were carried out by determination of puncture resistance, tensile strength, thermal stability, water vapor barrier, wettability and printability. The blending of pectin with PVP led to an improvement of mechanical resistance, barrier properties and hydrophobicity of these films for 57%, 58 and 24%, respectively, remaining adequate thermal stability. Since pectin and PVP are nontoxic, food-grade and biodegradable materials, this research present an ecosustainable approach to provide films with satisfied physical properties for use as packaging material of non-food products, such as water-treatment products (detergents, biocides, agrochemical compounds).",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Composites Part B-Engineering",
title = "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials",
pages = "61-56",
volume = "110",
doi = "10.1016/j.compositesb.2016.11.016"
}

Nešić, A., Ružić, J., Gordić, M. V., Ostojić, S., Micić, D.,& Onjia, A.. (2017). Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering
Elsevier Sci Ltd, Oxford., 110, 56-61.
https://doi.org/10.1016/j.compositesb.2016.11.016

Nešić A, Ružić J, Gordić MV, Ostojić S, Micić D, Onjia A. Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials. in Composites Part B-Engineering. 2017;110:56-61.
doi:10.1016/j.compositesb.2016.11.016 .

Nešić, Aleksandra, Ružić, Jovana, Gordić, Milan V., Ostojić, Sanja, Micić, Darko, Onjia, Antonije, "Pectin-polyvinylpyrrolidone films: A sustainable approach to the development of biobased packaging materials" in Composites Part B-Engineering, 110 (2017):56-61,
https://doi.org/10.1016/j.compositesb.2016.11.016 . .

TY  - JOUR
AU  - Nešić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Ilić, Svetlana M.
AU  - Gordić, Milan V.
AU  - Ostojić, Sanja
AU  - Micić, Darko M.
AU  - Veličković, Sava J.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5757
AB  - Manufacturing of synthetic composites consumes huge energy and their disposal at the end of the life cycle is very difficult since there is virtually no recycling option. Therefore, biocomposite materials have recently received considerable attention in academic research and industrial application compared to the synthetic composite materials due biodegradability, nontoxicity and economical point of view. Biocomposite membranes of highly methylated pectin and SBA-15, a form of mesoporous silica, were prepared by membrane casting. The amount of SBA-15 was 10%, 20% and 30% by membrane mass. These membranes were characterized by optical microscopy, FTIR, XRD, thermogravimetry, mechanical analysis and swelling in water, HCl, NaOH and methanol. The incorporation of SBA-15 in pectin matrix enhanced the stability of these membranes in all tested solutions, compared to the pure pectin membranes. The pectin/SBA photomicrographs contain rod-like domains which indicate the presence of SBA-15 in membrane. Mechanical analysis proves that incorporation of SBA-15 enhances the elasticity and tensile strength of pectin membranes. Thermogravimety in nitrogen has shown that the presence of SBA-15 in the membranes increased the onset temperatures of pectin degradation. The novel composite material represents promising way for practical membrane application. (C) 2014 Elsevier Ltd. All rights reserved.
PB  - Elsevier Ltd.
T2  - Composites: Part B: Engineering
T1  - Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15
EP  - 167
SP  - 162
VL  - 64
DO  - 10.1016/j.compositesb.2014.04.019
ER  - 

@article{
author = "Nešić, Aleksandra and Kokunešoski, Maja and Ilić, Svetlana M. and Gordić, Milan V. and Ostojić, Sanja and Micić, Darko M. and Veličković, Sava J.",
year = "2014",
abstract = "Manufacturing of synthetic composites consumes huge energy and their disposal at the end of the life cycle is very difficult since there is virtually no recycling option. Therefore, biocomposite materials have recently received considerable attention in academic research and industrial application compared to the synthetic composite materials due biodegradability, nontoxicity and economical point of view. Biocomposite membranes of highly methylated pectin and SBA-15, a form of mesoporous silica, were prepared by membrane casting. The amount of SBA-15 was 10%, 20% and 30% by membrane mass. These membranes were characterized by optical microscopy, FTIR, XRD, thermogravimetry, mechanical analysis and swelling in water, HCl, NaOH and methanol. The incorporation of SBA-15 in pectin matrix enhanced the stability of these membranes in all tested solutions, compared to the pure pectin membranes. The pectin/SBA photomicrographs contain rod-like domains which indicate the presence of SBA-15 in membrane. Mechanical analysis proves that incorporation of SBA-15 enhances the elasticity and tensile strength of pectin membranes. Thermogravimety in nitrogen has shown that the presence of SBA-15 in the membranes increased the onset temperatures of pectin degradation. The novel composite material represents promising way for practical membrane application. (C) 2014 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier Ltd.",
journal = "Composites: Part B: Engineering",
title = "Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15",
pages = "167-162",
volume = "64",
doi = "10.1016/j.compositesb.2014.04.019"
}

Nešić, A., Kokunešoski, M., Ilić, S. M., Gordić, M. V., Ostojić, S., Micić, D. M.,& Veličković, S. J.. (2014). Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15. in Composites: Part B: Engineering
Elsevier Ltd.., 64, 162-167.
https://doi.org/10.1016/j.compositesb.2014.04.019

Nešić A, Kokunešoski M, Ilić SM, Gordić MV, Ostojić S, Micić DM, Veličković SJ. Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15. in Composites: Part B: Engineering. 2014;64:162-167.
doi:10.1016/j.compositesb.2014.04.019 .

Nešić, Aleksandra, Kokunešoski, Maja, Ilić, Svetlana M., Gordić, Milan V., Ostojić, Sanja, Micić, Darko M., Veličković, Sava J., "Biocomposite membranes of highly methylated pectin and mesoporous silica SBA-15" in Composites: Part B: Engineering, 64 (2014):162-167,
https://doi.org/10.1016/j.compositesb.2014.04.019 . .

TY  - JOUR
AU  - Gordić, Milan V.
AU  - Babić, Biljana M.
AU  - Stašić, J.M.
AU  - Trtica, M.S.
AU  - Volkov-Husović, Tatjana
AU  - Pošarac, Milica B.
AU  - Matović, Branko
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1841
AB  - Biomorphous β-SiC ceramics were produced from linden wood by impregnation with tetraethyl orthosilicate (TEOS), followed pyrolysis and high temperature treatment at 1580°C. Six specimen groups included charcoal and five groups with different number of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramic were characterized using three-point and compression testing. Mechanicall properties increased slightly with number of impregnation cycles. Ultrasonic pulse velocity testing (UPVT) was used to determine dynamic young modulus of elasticity. Laser surface modification was studied by interaction with Nd:YAG laser, operating at 1064 or 532 nm wavelengthss and pulse duration of 150 ps.
AB  - Biomorfna keramika β-SiC je dobijena od karbonizovane lipe uz impregnaciju tetraetil ortosilikatom (TEOS), sa karbotermalnom redukcijom na 1580°C. Ispitivano je šest grupa uzoraka - karbonizovano drvo i pet grupa biomorfnog SiC sa različitim brojem impregnacija. Čvrstoće na savijanje i kompresiju karbonizovanog drveta i biomorfnog SiC je merena primenom metoda savijanja u tri tačke i testiranja kompresije. Mehanička svojstva su se postepeno poboljšavala sa brojem ciklusa impregnacije. Određivanje dinamičkog modula elastičnosti je vršeno pomoću merenja brzine ultrazvučnih impulsa (UPVT). Za proučavanje površinske interakcije sa laserskim zračenjem korišćen je Nd:YAG laser koji je emitovao zračenje na talasnim dužinama 1064 i 532 nm i trajanjem impulsa 150 ps.
PB  - International Institute for the Science of Sintering, Beograd
T2  - Science of Sintering
T1  - Mechanical properties of biomorphic silicon carbide ceramics
EP  - 223
IS  - 2
SP  - 215
VL  - 43
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1841
ER  - 

@article{
author = "Gordić, Milan V. and Babić, Biljana M. and Stašić, J.M. and Trtica, M.S. and Volkov-Husović, Tatjana and Pošarac, Milica B. and Matović, Branko",
year = "2011",
abstract = "Biomorphous β-SiC ceramics were produced from linden wood by impregnation with tetraethyl orthosilicate (TEOS), followed pyrolysis and high temperature treatment at 1580°C. Six specimen groups included charcoal and five groups with different number of impregnation were analyzed. Flexural and compressional strength of charcoal and woodlike SiC ceramic were characterized using three-point and compression testing. Mechanicall properties increased slightly with number of impregnation cycles. Ultrasonic pulse velocity testing (UPVT) was used to determine dynamic young modulus of elasticity. Laser surface modification was studied by interaction with Nd:YAG laser, operating at 1064 or 532 nm wavelengthss and pulse duration of 150 ps., Biomorfna keramika β-SiC je dobijena od karbonizovane lipe uz impregnaciju tetraetil ortosilikatom (TEOS), sa karbotermalnom redukcijom na 1580°C. Ispitivano je šest grupa uzoraka - karbonizovano drvo i pet grupa biomorfnog SiC sa različitim brojem impregnacija. Čvrstoće na savijanje i kompresiju karbonizovanog drveta i biomorfnog SiC je merena primenom metoda savijanja u tri tačke i testiranja kompresije. Mehanička svojstva su se postepeno poboljšavala sa brojem ciklusa impregnacije. Određivanje dinamičkog modula elastičnosti je vršeno pomoću merenja brzine ultrazvučnih impulsa (UPVT). Za proučavanje površinske interakcije sa laserskim zračenjem korišćen je Nd:YAG laser koji je emitovao zračenje na talasnim dužinama 1064 i 532 nm i trajanjem impulsa 150 ps.",
publisher = "International Institute for the Science of Sintering, Beograd",
journal = "Science of Sintering",
title = "Mechanical properties of biomorphic silicon carbide ceramics",
pages = "223-215",
number = "2",
volume = "43",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1841"
}

Gordić, M. V., Babić, B. M., Stašić, J.M., Trtica, M.S., Volkov-Husović, T., Pošarac, M. B.,& Matović, B.. (2011). Mechanical properties of biomorphic silicon carbide ceramics. in Science of Sintering
International Institute for the Science of Sintering, Beograd., 43(2), 215-223.
https://hdl.handle.net/21.15107/rcub_technorep_1841

Gordić MV, Babić BM, Stašić J, Trtica M, Volkov-Husović T, Pošarac MB, Matović B. Mechanical properties of biomorphic silicon carbide ceramics. in Science of Sintering. 2011;43(2):215-223.
https://hdl.handle.net/21.15107/rcub_technorep_1841 .

Gordić, Milan V., Babić, Biljana M., Stašić, J.M., Trtica, M.S., Volkov-Husović, Tatjana, Pošarac, Milica B., Matović, Branko, "Mechanical properties of biomorphic silicon carbide ceramics" in Science of Sintering, 43, no. 2 (2011):215-223,
https://hdl.handle.net/21.15107/rcub_technorep_1841 .