TY  - JOUR
AU  - Malićanin, Marko
AU  - Milanović, Jelena
AU  - Žižović, Irena
AU  - Ivanović, Jasna
AU  - Milovanović, Stoja
AU  - Rakić, Vesna
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6877
AB  - In this work, the extraction by supercritical carbon dioxide of grapeseed oil from five red grape varieties was investigated. Apart from an indigenous variety Prokupac, as the domestic, and Merlot and Cabernet Sauvignon, as international grape varieties the most represented in the Republic of Serbia, Pinot Noir and Gamay were studied as well. Extraction conditions were: temperature of 50 °C, 250 bar pressure, and 0.3 kg/h flow rate of CO2. It was shown that the extraction kinetics of international grape varieties, mutually similar differ significantly from the domestic one. The obtained oil yields were in the range of 8.3% w/w (Gamay) to 10.4% w/w (Pinot Noir) for the international varieties and 5.0% w/w for the domestic variety. The mathematical model “Sovova” was applied to define transport parameters regulating the oil mass transfer inside the seed particles and determine the agreement between experimental and model curves. The interpretation of results took into account the differences of grade seed morphologies (outer surfaces and inner layers) which was investigated by SEM analysis.
AB  - U ovom radu je ekstrakcija natkritičnim ugljen-dioksidom primenjena za dobijanje ulja iz
semenki crvenih sorti grožđa koje su najzastupljenije u Republici Srbiji, od kojih je sorta Prokupac
autohtona, a ostale sorte su internacionalne. Ekstrakcija je izvedena na temperaturi od 50 °C,
pritisku od 250 bar i protoku od 0,3 kg CO2 /h. Pokazano je da je kinetika ekstrakcije slična za
internacionalne sorte grožđa, a da se značajno razlikuje od kinetike ekstrakcije ulja iz autohtone
sorte Prokupac. Prinosi ulja su se kod internacionalnih sorti grožđa kretali od 8,3% (Game) do
10,4% w/w (Pinot Noir), dok je kod domaće sorte Prokupac ostvaren prinos od 4,96% w/w. Za
definisanje parametara ekstrakcije koji regulišu transport mase unutar čestica semenki primenjen
je matematički model “Sovova”. Snimanje unutrašnje i spoljašnje morfologije semenki SEM
metodom je korišćeno za interpretaciju rezultata dobijenih primenom matematičkog modela.
PB  - University of Niš, Serbia
T2  - Facta Universitatis, Series: Physics, Chemistry and Technology
T1  - SupercriticaL CO2 extraction of oils from red grape varieties: yields and extraction parameters
T1  - Ekstrakcija ulja iz semenki crvenih sorti grožđa natkritičnim CO2. Prinosi i parametri ekstrakcije
EP  - 56
IS  - 1
SP  - 45
VL  - 19
DO  - 10.2298/FUPCT2101045M
ER  - 

@article{
author = "Malićanin, Marko and Milanović, Jelena and Žižović, Irena and Ivanović, Jasna and Milovanović, Stoja and Rakić, Vesna",
year = "2021",
abstract = "In this work, the extraction by supercritical carbon dioxide of grapeseed oil from five red grape varieties was investigated. Apart from an indigenous variety Prokupac, as the domestic, and Merlot and Cabernet Sauvignon, as international grape varieties the most represented in the Republic of Serbia, Pinot Noir and Gamay were studied as well. Extraction conditions were: temperature of 50 °C, 250 bar pressure, and 0.3 kg/h flow rate of CO2. It was shown that the extraction kinetics of international grape varieties, mutually similar differ significantly from the domestic one. The obtained oil yields were in the range of 8.3% w/w (Gamay) to 10.4% w/w (Pinot Noir) for the international varieties and 5.0% w/w for the domestic variety. The mathematical model “Sovova” was applied to define transport parameters regulating the oil mass transfer inside the seed particles and determine the agreement between experimental and model curves. The interpretation of results took into account the differences of grade seed morphologies (outer surfaces and inner layers) which was investigated by SEM analysis., U ovom radu je ekstrakcija natkritičnim ugljen-dioksidom primenjena za dobijanje ulja iz
semenki crvenih sorti grožđa koje su najzastupljenije u Republici Srbiji, od kojih je sorta Prokupac
autohtona, a ostale sorte su internacionalne. Ekstrakcija je izvedena na temperaturi od 50 °C,
pritisku od 250 bar i protoku od 0,3 kg CO2 /h. Pokazano je da je kinetika ekstrakcije slična za
internacionalne sorte grožđa, a da se značajno razlikuje od kinetike ekstrakcije ulja iz autohtone
sorte Prokupac. Prinosi ulja su se kod internacionalnih sorti grožđa kretali od 8,3% (Game) do
10,4% w/w (Pinot Noir), dok je kod domaće sorte Prokupac ostvaren prinos od 4,96% w/w. Za
definisanje parametara ekstrakcije koji regulišu transport mase unutar čestica semenki primenjen
je matematički model “Sovova”. Snimanje unutrašnje i spoljašnje morfologije semenki SEM
metodom je korišćeno za interpretaciju rezultata dobijenih primenom matematičkog modela.",
publisher = "University of Niš, Serbia",
journal = "Facta Universitatis, Series: Physics, Chemistry and Technology",
title = "SupercriticaL CO2 extraction of oils from red grape varieties: yields and extraction parameters, Ekstrakcija ulja iz semenki crvenih sorti grožđa natkritičnim CO2. Prinosi i parametri ekstrakcije",
pages = "56-45",
number = "1",
volume = "19",
doi = "10.2298/FUPCT2101045M"
}

Malićanin, M., Milanović, J., Žižović, I., Ivanović, J., Milovanović, S.,& Rakić, V.. (2021). SupercriticaL CO2 extraction of oils from red grape varieties: yields and extraction parameters. in Facta Universitatis, Series: Physics, Chemistry and Technology
University of Niš, Serbia., 19(1), 45-56.
https://doi.org/10.2298/FUPCT2101045M

Malićanin M, Milanović J, Žižović I, Ivanović J, Milovanović S, Rakić V. SupercriticaL CO2 extraction of oils from red grape varieties: yields and extraction parameters. in Facta Universitatis, Series: Physics, Chemistry and Technology. 2021;19(1):45-56.
doi:10.2298/FUPCT2101045M .

Malićanin, Marko, Milanović, Jelena, Žižović, Irena, Ivanović, Jasna, Milovanović, Stoja, Rakić, Vesna, "SupercriticaL CO2 extraction of oils from red grape varieties: yields and extraction parameters" in Facta Universitatis, Series: Physics, Chemistry and Technology, 19, no. 1 (2021):45-56,
https://doi.org/10.2298/FUPCT2101045M . .

TY  - JOUR
AU  - Milanović, Jelena
AU  - Malićanin, Marko
AU  - Žižović, Irena
AU  - Ivanović, Jasna
AU  - Milovanović, Stoja
AU  - Rakić, Vesna
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6878
AB  - This study aimed to investigate the potential of the most abundant red grape variety from the central part of Serbia (the region of three Morava rivers) for grape oil manufacturing, using supercritical CO2 extraction. The content of the main constituents of grape seed oils from the indigenous variety Prokupac was determined and the results
of the analysis were compared with selected, most commonly grown, international varieties (Cabernet Sauvignon, Pinot Noir, Merlot, and Gamay). Fatty acid profile and the content of biologically active compounds (total phenolic compounds and αtocopherol) were determined. Oxidative stability of the oils was estimated using a DSC
(differential scanning calorimetry) method, by determining the oxidation onset temperature. The fatty acid composition was in accordance with literature data. In terms of α-tocopherol content, its low relative amount was measured in the oils from all grape seed varieties.
AB  - Cilj ovog rada je ispitivanje potencijala za dobijanje ulja iz semenki grožđa najzastupljenijih
crvenih sorti grožđa u centralnom delu Republike Srbije (oblast tri Morave), primenom natkritične
CO2 ekstrakcije. U radu je izvršena karakterizacija glavnih sastojaka semenki autohtone sorte
Prokupac i poređenje sastava ovog ulja sa uljima izolovanih iz semenki najzastupljenijih
internacionalnih sorti grožđa u ovom regionu. Određen je masnokiselinski sastav ulja, sadržaj
ukupnih fenolnih jedinjenja i sadržaj α-tokoferola. Za određivanje oksidativne stabilnosti ulja
upotrebljena je DSC metoda. Sastav masnih kiselina u uljima bio je u skladu sa podacima iz
literature. Utvrđeno je da se od svih sorti grožđa primenjenim uslovima ekstrakcije dobijaju ulja sa
niskim sadržajem α-tokoferola.
PB  - University of Niš, Serbia
T2  - Facta Universitatis, Series: Physics, Chemistry and Technology
T1  - Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction
T1  - Hemijski sastav ulja semenki crvenih sorti grožđa izolovanih natkritičnom CO2 ekstrakcijom
EP  - 90
IS  - 2
SP  - 81
VL  - 19
DO  - 10.2298/FUPCT2102081M
ER  - 

@article{
author = "Milanović, Jelena and Malićanin, Marko and Žižović, Irena and Ivanović, Jasna and Milovanović, Stoja and Rakić, Vesna",
year = "2021",
abstract = "This study aimed to investigate the potential of the most abundant red grape variety from the central part of Serbia (the region of three Morava rivers) for grape oil manufacturing, using supercritical CO2 extraction. The content of the main constituents of grape seed oils from the indigenous variety Prokupac was determined and the results
of the analysis were compared with selected, most commonly grown, international varieties (Cabernet Sauvignon, Pinot Noir, Merlot, and Gamay). Fatty acid profile and the content of biologically active compounds (total phenolic compounds and αtocopherol) were determined. Oxidative stability of the oils was estimated using a DSC
(differential scanning calorimetry) method, by determining the oxidation onset temperature. The fatty acid composition was in accordance with literature data. In terms of α-tocopherol content, its low relative amount was measured in the oils from all grape seed varieties., Cilj ovog rada je ispitivanje potencijala za dobijanje ulja iz semenki grožđa najzastupljenijih
crvenih sorti grožđa u centralnom delu Republike Srbije (oblast tri Morave), primenom natkritične
CO2 ekstrakcije. U radu je izvršena karakterizacija glavnih sastojaka semenki autohtone sorte
Prokupac i poređenje sastava ovog ulja sa uljima izolovanih iz semenki najzastupljenijih
internacionalnih sorti grožđa u ovom regionu. Određen je masnokiselinski sastav ulja, sadržaj
ukupnih fenolnih jedinjenja i sadržaj α-tokoferola. Za određivanje oksidativne stabilnosti ulja
upotrebljena je DSC metoda. Sastav masnih kiselina u uljima bio je u skladu sa podacima iz
literature. Utvrđeno je da se od svih sorti grožđa primenjenim uslovima ekstrakcije dobijaju ulja sa
niskim sadržajem α-tokoferola.",
publisher = "University of Niš, Serbia",
journal = "Facta Universitatis, Series: Physics, Chemistry and Technology",
title = "Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction, Hemijski sastav ulja semenki crvenih sorti grožđa izolovanih natkritičnom CO2 ekstrakcijom",
pages = "90-81",
number = "2",
volume = "19",
doi = "10.2298/FUPCT2102081M"
}

Milanović, J., Malićanin, M., Žižović, I., Ivanović, J., Milovanović, S.,& Rakić, V.. (2021). Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction. in Facta Universitatis, Series: Physics, Chemistry and Technology
University of Niš, Serbia., 19(2), 81-90.
https://doi.org/10.2298/FUPCT2102081M

Milanović J, Malićanin M, Žižović I, Ivanović J, Milovanović S, Rakić V. Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction. in Facta Universitatis, Series: Physics, Chemistry and Technology. 2021;19(2):81-90.
doi:10.2298/FUPCT2102081M .

Milanović, Jelena, Malićanin, Marko, Žižović, Irena, Ivanović, Jasna, Milovanović, Stoja, Rakić, Vesna, "Chemical composition of seed oil from red grape varieties obtained by supercritical CO2 extraction" in Facta Universitatis, Series: Physics, Chemistry and Technology, 19, no. 2 (2021):81-90,
https://doi.org/10.2298/FUPCT2102081M . .

TY  - JOUR
AU  - Yilmaztekin, Murat
AU  - Lević, Steva
AU  - Kalušević, Ana
AU  - Cam, Mustafa
AU  - Bugarski, Branko
AU  - Rakić, Vesna M.
AU  - Pavlović, Vladimir
AU  - Nedović, Viktor
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4212
AB  - Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.
PB  - Taylor & Francis Ltd
T2  - Journal of Microencapsulation
T1  - Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates
EP  - 119
IS  - 2
SP  - 109
VL  - 36
DO  - 10.1080/02652048.2019.1607596
ER  - 

@article{
author = "Yilmaztekin, Murat and Lević, Steva and Kalušević, Ana and Cam, Mustafa and Bugarski, Branko and Rakić, Vesna M. and Pavlović, Vladimir and Nedović, Viktor",
year = "2019",
abstract = "Aim: The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 +/- 4.3%) compared to carnauba wax (94.2 +/- 7.8%) and gelatine/alginate coacervates (13.2 +/- 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.",
publisher = "Taylor & Francis Ltd",
journal = "Journal of Microencapsulation",
title = "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates",
pages = "119-109",
number = "2",
volume = "36",
doi = "10.1080/02652048.2019.1607596"
}

Yilmaztekin, M., Lević, S., Kalušević, A., Cam, M., Bugarski, B., Rakić, V. M., Pavlović, V.,& Nedović, V.. (2019). Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation
Taylor & Francis Ltd., 36(2), 109-119.
https://doi.org/10.1080/02652048.2019.1607596

Yilmaztekin M, Lević S, Kalušević A, Cam M, Bugarski B, Rakić VM, Pavlović V, Nedović V. Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation. 2019;36(2):109-119.
doi:10.1080/02652048.2019.1607596 .

Yilmaztekin, Murat, Lević, Steva, Kalušević, Ana, Cam, Mustafa, Bugarski, Branko, Rakić, Vesna M., Pavlović, Vladimir, Nedović, Viktor, "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates" in Journal of Microencapsulation, 36, no. 2 (2019):109-119,
https://doi.org/10.1080/02652048.2019.1607596 . .

TY  - JOUR
AU  - Yilmaztekin, Murat
AU  - Lević, Steva
AU  - Kalušević, Ana
AU  - Cam, Mustafa
AU  - Bugarski, Branko
AU  - Rakić, Vesna M.
AU  - Pavlović, Vladimir
AU  - Nedović, Viktor
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5046
AB  - The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 ± 4.3%) compared to carnauba wax (94.2 ± 7.8%) and gelatine/alginate coacervates (13.2 ± 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.
PB  - Taylor and Francis Ltd
T2  - Journal of Microencapsulation
T1  - Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates
EP  - 119
IS  - 2
SP  - 109
VL  - 36
DO  - 10.1080/02652048.2019.1607596
ER  - 

@article{
author = "Yilmaztekin, Murat and Lević, Steva and Kalušević, Ana and Cam, Mustafa and Bugarski, Branko and Rakić, Vesna M. and Pavlović, Vladimir and Nedović, Viktor",
year = "2019",
abstract = "The aim was to choose the optimal encapsulation system and to incorporate encapsulates loaded with essential oil into the ice cream as a model food product. Methods: Ca-alginate beads were produced by electrostatic extrusion process. Gelatine/alginate coacervates were processed with coacervation. Carnauba wax microparticles were produced using melt dispersion process. Morphological properties, chemical, and thermal stabilities of encapsulates were tested by SEM, FTIR spectral, and thermogravimetric analysis. Results: Alginate provided sufficient emulsion stability over 1 h. Ca-alginate showed higher encapsulation efficiency (EE) (98.4 ± 4.3%) compared to carnauba wax (94.2 ± 7.8%) and gelatine/alginate coacervates (13.2 ± 1.2%). The presence of essential oil in all three types of encapsulates confirmed with FTIR. The encapsulation process ensured controlled release and thermal stability of the oil. Conclusions: Ca-alginate matrix as the most suitable for peppermint essential oil encapsulation. The sensory analysis showed that ice cream incorporating encapsulates is a promising system for the consumption of health beneficial peppermint essential oil.",
publisher = "Taylor and Francis Ltd",
journal = "Journal of Microencapsulation",
title = "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates",
pages = "119-109",
number = "2",
volume = "36",
doi = "10.1080/02652048.2019.1607596"
}

Yilmaztekin, M., Lević, S., Kalušević, A., Cam, M., Bugarski, B., Rakić, V. M., Pavlović, V.,& Nedović, V.. (2019). Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation
Taylor and Francis Ltd., 36(2), 109-119.
https://doi.org/10.1080/02652048.2019.1607596

Yilmaztekin M, Lević S, Kalušević A, Cam M, Bugarski B, Rakić VM, Pavlović V, Nedović V. Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates. in Journal of Microencapsulation. 2019;36(2):109-119.
doi:10.1080/02652048.2019.1607596 .

Yilmaztekin, Murat, Lević, Steva, Kalušević, Ana, Cam, Mustafa, Bugarski, Branko, Rakić, Vesna M., Pavlović, Vladimir, Nedović, Viktor, "Characterisation of peppermint (Mentha piperita L.) essential oil encapsulates" in Journal of Microencapsulation, 36, no. 2 (2019):109-119,
https://doi.org/10.1080/02652048.2019.1607596 . .

TY  - JOUR
AU  - Rusmirović, Jelena
AU  - Rančić, Milica
AU  - Pavlović, Vladimir B.
AU  - Rakić, Vesna M.
AU  - Stevanović, Sanja
AU  - Đonlagić, Jasna
AU  - Marinković, Aleksandar
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3879
AB  - Unsaturated fatty acid (FA)-modified nanocellulose (m-NC) shows potential application in improving mechanical properties of unsaturated polyester/m-NC nanocomposites (UPe/m-NC). A polyester matrix is obtained by polycondensation of maleic anhydride and products of poly(ethylene terephthalate) depolymerization with propylene glycol. Two methods of NC modification are performed: direct esterification with oleic acid, linseed, or sunflower oil FAs, and esterification/amidation with maleic acid/ethylene diamine (MA/EDA) bridging group followed by amidation with methyl ester of FAs. Increases of stress at break in the ranges from 148.8% to 181.4% and from 155.8% to193.0% for UPe/m-NC composites loaded with 1 wt% of NC modified directly or via MA/EDA cross-linker, respectively, are obtained. Results of the modeling of tensile modulus, by using the Cox-Krenchel model, show good agreement with experimentally obtained data. The effect of FAs' cross-linking capabilities on the dynamic-mechanical and thermal properties of the UPe/m-NC is studied. Cross-linking density, modulus, and T-g of the nanocomposite show appropriate relation with the unsaturation extent/structure of NC modification.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Macromolecular Materials and Engineering
T1  - Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances
IS  - 8
VL  - 303
DO  - 10.1002/mame.201700648
ER  - 

@article{
author = "Rusmirović, Jelena and Rančić, Milica and Pavlović, Vladimir B. and Rakić, Vesna M. and Stevanović, Sanja and Đonlagić, Jasna and Marinković, Aleksandar",
year = "2018",
abstract = "Unsaturated fatty acid (FA)-modified nanocellulose (m-NC) shows potential application in improving mechanical properties of unsaturated polyester/m-NC nanocomposites (UPe/m-NC). A polyester matrix is obtained by polycondensation of maleic anhydride and products of poly(ethylene terephthalate) depolymerization with propylene glycol. Two methods of NC modification are performed: direct esterification with oleic acid, linseed, or sunflower oil FAs, and esterification/amidation with maleic acid/ethylene diamine (MA/EDA) bridging group followed by amidation with methyl ester of FAs. Increases of stress at break in the ranges from 148.8% to 181.4% and from 155.8% to193.0% for UPe/m-NC composites loaded with 1 wt% of NC modified directly or via MA/EDA cross-linker, respectively, are obtained. Results of the modeling of tensile modulus, by using the Cox-Krenchel model, show good agreement with experimentally obtained data. The effect of FAs' cross-linking capabilities on the dynamic-mechanical and thermal properties of the UPe/m-NC is studied. Cross-linking density, modulus, and T-g of the nanocomposite show appropriate relation with the unsaturation extent/structure of NC modification.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Macromolecular Materials and Engineering",
title = "Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances",
number = "8",
volume = "303",
doi = "10.1002/mame.201700648"
}

Rusmirović, J., Rančić, M., Pavlović, V. B., Rakić, V. M., Stevanović, S., Đonlagić, J.,& Marinković, A.. (2018). Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering
Wiley-VCH Verlag Gmbh, Weinheim., 303(8).
https://doi.org/10.1002/mame.201700648

Rusmirović J, Rančić M, Pavlović VB, Rakić VM, Stevanović S, Đonlagić J, Marinković A. Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances. in Macromolecular Materials and Engineering. 2018;303(8).
doi:10.1002/mame.201700648 .

Rusmirović, Jelena, Rančić, Milica, Pavlović, Vladimir B., Rakić, Vesna M., Stevanović, Sanja, Đonlagić, Jasna, Marinković, Aleksandar, "Cross-Linkable Modified Nanocellulose/Polyester Resin-Based Composites: Effect of Unsaturated Fatty Acid Nanocellulose Modification on Material Performances" in Macromolecular Materials and Engineering, 303, no. 8 (2018),
https://doi.org/10.1002/mame.201700648 . .

TY  - JOUR
AU  - Rusmirović, Jelena
AU  - Ivanović, Jasna
AU  - Pavlović, Vladimir B.
AU  - Rakić, Vesna M.
AU  - Rančić, Milica
AU  - Đokić, Veljko
AU  - Marinković, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3741
AB  - The influence of modification and vacuum/supercritical CO2 (scCO(2)) drying methods on the surface properties, morphology and thermal stability of cellulose nanocrystals (NC) was presented in this study. Introduction of reactive vinyl groups on NC surface was performed by either direct esterification with oleic acid, linseed or sunflower oil fatty acids; or by amidation of maleic acid/ethylene diamine with methyl ester of fatty acid. Obtained modified NC (m-NC) were characterized using MR and Raman spectroscopy; and by determination of acid, iodine and ester values. Structural analysis of m-NC showed varieties of forms, from spongy to nanostructural non-uniform layered morphology with observable agglomeration, which confirmed morphology dependence on modification/processing methods Thermogravimetry-MS spectrometry showed different thermal stability and degradation pathways of NC/m-NC. Incorporation of 1 wt% of reactive m-NC in unsaturated polyester lead to high performance nanocomposites and contributed to increase of stress at break in the range from 76 to 93%.
PB  - Elsevier Sci Ltd, Oxford
T2  - Carbohydrate Polymers
T1  - Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites
EP  - 74
SP  - 64
VL  - 164
DO  - 10.1016/j.carbpol.2017.01.086
ER  - 

@article{
author = "Rusmirović, Jelena and Ivanović, Jasna and Pavlović, Vladimir B. and Rakić, Vesna M. and Rančić, Milica and Đokić, Veljko and Marinković, Aleksandar",
year = "2017",
abstract = "The influence of modification and vacuum/supercritical CO2 (scCO(2)) drying methods on the surface properties, morphology and thermal stability of cellulose nanocrystals (NC) was presented in this study. Introduction of reactive vinyl groups on NC surface was performed by either direct esterification with oleic acid, linseed or sunflower oil fatty acids; or by amidation of maleic acid/ethylene diamine with methyl ester of fatty acid. Obtained modified NC (m-NC) were characterized using MR and Raman spectroscopy; and by determination of acid, iodine and ester values. Structural analysis of m-NC showed varieties of forms, from spongy to nanostructural non-uniform layered morphology with observable agglomeration, which confirmed morphology dependence on modification/processing methods Thermogravimetry-MS spectrometry showed different thermal stability and degradation pathways of NC/m-NC. Incorporation of 1 wt% of reactive m-NC in unsaturated polyester lead to high performance nanocomposites and contributed to increase of stress at break in the range from 76 to 93%.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Carbohydrate Polymers",
title = "Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites",
pages = "74-64",
volume = "164",
doi = "10.1016/j.carbpol.2017.01.086"
}

Rusmirović, J., Ivanović, J., Pavlović, V. B., Rakić, V. M., Rančić, M., Đokić, V.,& Marinković, A.. (2017). Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites. in Carbohydrate Polymers
Elsevier Sci Ltd, Oxford., 164, 64-74.
https://doi.org/10.1016/j.carbpol.2017.01.086

Rusmirović J, Ivanović J, Pavlović VB, Rakić VM, Rančić M, Đokić V, Marinković A. Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites. in Carbohydrate Polymers. 2017;164:64-74.
doi:10.1016/j.carbpol.2017.01.086 .

Rusmirović, Jelena, Ivanović, Jasna, Pavlović, Vladimir B., Rakić, Vesna M., Rančić, Milica, Đokić, Veljko, Marinković, Aleksandar, "Novel modified nanocellulose applicable as reinforcement in high-performance nanocomposites" in Carbohydrate Polymers, 164 (2017):64-74,
https://doi.org/10.1016/j.carbpol.2017.01.086 . .

TY  - JOUR
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Rusmirović, Jelena
AU  - Postole, Georgeta
AU  - Marinković, Aleksandar
AU  - Radić, Danka
AU  - Rakić, Vesna M.
AU  - Pavlović, Vladimir B.
AU  - Auroux, Aline
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3627
AB  - In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent
EP  - 246
IS  - 3
SP  - 235
VL  - 49
DO  - 10.2298/SOS1703235O
ER  - 

@article{
author = "Obradović, Nina and Filipović, Suzana and Rusmirović, Jelena and Postole, Georgeta and Marinković, Aleksandar and Radić, Danka and Rakić, Vesna M. and Pavlović, Vladimir B. and Auroux, Aline",
year = "2017",
abstract = "In this paper, synthesis of porous wollastonite-based ceramics was reported. Ceramic precursor, methylhydrocyclosiloxane, together with micro-sized CaCO3, was used as starting material. After 20 min of ultrasound treatment, and calcination at 250 degrees C for 30 min, yeast as a pore-forming agent was added to the as-obtained powders. Sintering regime was set up based on the results obtained by differential thermal analysis. Prepared mixture was pressed into pallets and sintered at 900 degrees C for 1 h. After the sintering regime, porous wollastonite-based ceramics was obtained. The phase composition of the sintered samples as well as microstructures was analyzed by X-ray diffraction method and SEM. In a batch test, the influence of pH, contact time and initial ion concentration on adsorption efficiency of As+5, Cr+6, and phosphate ions on synthesized wollastonite-based ceramics were studied. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model that predicted intra-particle diffusion as a rate-controlling step of overall process. High adsorption capacities 39.97, 21.87, and 15.29 mgg(-1) were obtained for As+5, Cr+6, and phosphate ions, respectively.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent",
pages = "246-235",
number = "3",
volume = "49",
doi = "10.2298/SOS1703235O"
}

Obradović, N., Filipović, S., Rusmirović, J., Postole, G., Marinković, A., Radić, D., Rakić, V. M., Pavlović, V. B.,& Auroux, A.. (2017). Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(3), 235-246.
https://doi.org/10.2298/SOS1703235O

Obradović N, Filipović S, Rusmirović J, Postole G, Marinković A, Radić D, Rakić VM, Pavlović VB, Auroux A. Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent. in Science of Sintering. 2017;49(3):235-246.
doi:10.2298/SOS1703235O .

Obradović, Nina, Filipović, Suzana, Rusmirović, Jelena, Postole, Georgeta, Marinković, Aleksandar, Radić, Danka, Rakić, Vesna M., Pavlović, Vladimir B., Auroux, Aline, "Formation of Porous Wollastonite-based Ceramics after Sintering With Yeast as the Pore-forming Agent" in Science of Sintering, 49, no. 3 (2017):235-246,
https://doi.org/10.2298/SOS1703235O . .

TY  - JOUR
AU  - Balanč, Bojana
AU  - Kalušević, Ana
AU  - Drvenica, Ivana
AU  - Coelho, Maria Teresa
AU  - Đorđević, Verica
AU  - Alves, Vitor D.
AU  - Sousa, Isabel
AU  - Moldao-Martins, Margarida
AU  - Rakić, Vesna M.
AU  - Nedović, Viktor
AU  - Bugarski, Branko
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3376
AB  - Carqueja (Pterospartum tridentatum) is an endemic species and various bioactive compounds have been identified in its aqueous extract. The aim of this study was to protect the natural antioxidants from the aqueous extract of carqueja by encapsulation in Ca-alginate microbeads and Ca-alginate microbeads containing 10% and 20% (w/v) of inulin. The microbeads produced by electrostatic extrusion technique had an average diameter from 625 mu m to 830 mu m depending on the portion of inulin. The sphericity factor of the hydrogel microbeads had values between 0.014 and 0.026, while freeze dried microbeads had irregular shape, especially those with no excipient. The reduction in microbeads size after freeze drying process (expressed as shrinkage factor) ranged from 0.338 (alginate microbeads with 20% (w/v) of inulin) to 0.523 (plain alginate microbeads). The expressed radical scavenging activity against ABTS and DPPH radicals was found to be between 30% and 40% for encapsulated extract, while the fresh extract showed around 47% and 57% of radical scavenging activity for ABTS and DPPH radicals, respectively. The correlation between antioxidant activity and the total phenolic content were found to be positive (in both assay methods, DPPH and ABTS), which indicate that the addition of inulin didn't have influence on antioxidant activity. The presence of inulin reduced stiffness of the hydrogel, and protected bead structure from collapse upon freeze-drying. Alginate-inulin beads are envisaged to be used for delivery of aqueous P. tridentatum extract in functional food products.
PB  - Wiley, Hoboken
T2  - Journal of Food Science
T1  - Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract
EP  - E75
IS  - 1
SP  - E65
VL  - 81
DO  - 10.1111/1750-3841.13167
ER  - 

@article{
author = "Balanč, Bojana and Kalušević, Ana and Drvenica, Ivana and Coelho, Maria Teresa and Đorđević, Verica and Alves, Vitor D. and Sousa, Isabel and Moldao-Martins, Margarida and Rakić, Vesna M. and Nedović, Viktor and Bugarski, Branko",
year = "2016",
abstract = "Carqueja (Pterospartum tridentatum) is an endemic species and various bioactive compounds have been identified in its aqueous extract. The aim of this study was to protect the natural antioxidants from the aqueous extract of carqueja by encapsulation in Ca-alginate microbeads and Ca-alginate microbeads containing 10% and 20% (w/v) of inulin. The microbeads produced by electrostatic extrusion technique had an average diameter from 625 mu m to 830 mu m depending on the portion of inulin. The sphericity factor of the hydrogel microbeads had values between 0.014 and 0.026, while freeze dried microbeads had irregular shape, especially those with no excipient. The reduction in microbeads size after freeze drying process (expressed as shrinkage factor) ranged from 0.338 (alginate microbeads with 20% (w/v) of inulin) to 0.523 (plain alginate microbeads). The expressed radical scavenging activity against ABTS and DPPH radicals was found to be between 30% and 40% for encapsulated extract, while the fresh extract showed around 47% and 57% of radical scavenging activity for ABTS and DPPH radicals, respectively. The correlation between antioxidant activity and the total phenolic content were found to be positive (in both assay methods, DPPH and ABTS), which indicate that the addition of inulin didn't have influence on antioxidant activity. The presence of inulin reduced stiffness of the hydrogel, and protected bead structure from collapse upon freeze-drying. Alginate-inulin beads are envisaged to be used for delivery of aqueous P. tridentatum extract in functional food products.",
publisher = "Wiley, Hoboken",
journal = "Journal of Food Science",
title = "Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract",
pages = "E75-E65",
number = "1",
volume = "81",
doi = "10.1111/1750-3841.13167"
}

Balanč, B., Kalušević, A., Drvenica, I., Coelho, M. T., Đorđević, V., Alves, V. D., Sousa, I., Moldao-Martins, M., Rakić, V. M., Nedović, V.,& Bugarski, B.. (2016). Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract. in Journal of Food Science
Wiley, Hoboken., 81(1), E65-E75.
https://doi.org/10.1111/1750-3841.13167

Balanč B, Kalušević A, Drvenica I, Coelho MT, Đorđević V, Alves VD, Sousa I, Moldao-Martins M, Rakić VM, Nedović V, Bugarski B. Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract. in Journal of Food Science. 2016;81(1):E65-E75.
doi:10.1111/1750-3841.13167 .

Balanč, Bojana, Kalušević, Ana, Drvenica, Ivana, Coelho, Maria Teresa, Đorđević, Verica, Alves, Vitor D., Sousa, Isabel, Moldao-Martins, Margarida, Rakić, Vesna M., Nedović, Viktor, Bugarski, Branko, "Calcium-Alginate-Inulin Microbeads as Carriers for Aqueous Carqueja Extract" in Journal of Food Science, 81, no. 1 (2016):E65-E75,
https://doi.org/10.1111/1750-3841.13167 . .

TY  - JOUR
AU  - Lević, Steva
AU  - Pajić-Lijaković, Ivana
AU  - Đorđević, Verica
AU  - Rac, Vladislav
AU  - Rakić, Vesna M.
AU  - Šolević Knudsen, Tatjana
AU  - Pavlović, Vladimir B.
AU  - Bugarski, Branko
AU  - Nedović, Viktor
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2991
AB  - In this study, calcium alginate beads immobilizing D-limonene (solid systems) have been manufactured starting from emulsions of this flavor in sodium alginate (liquid systems). The effects of alginate concentration (0.02 and 0.03 g/mL) and flavor content (5 and 10 % w/w) on viscosity, conductivity and stability of emulsions were investigated. The flavor droplets in emulsions are bigger as polymer solution is more concentrated and contains more of the flavor. When emulsions have been subjected to electrostatic extrusion and upon Na+-Ca2+ ion exchange, smaller (similar to 960 to similar to 1450 mm) and less spherical beads were obtained (sphericity factor 0.003-0.21) compared to beads produced by simple dripping technique (without electrostatic field). When wet beads were air dried, they shrunk less if they had higher content of the flavor. Novel mathematical model describing swelling kinetics of dried beads is developed. In this work, D-limonene was efficiently immobilized within Ca-alginate beads (immobilization efficiency similar to 50 to similar to 77%) and its thermal stability was confirmed by TG/MS analysis.
PB  - Elsevier Sci Ltd, Oxford
T2  - Food Hydrocolloids
T1  - Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion
EP  - 123
SP  - 111
VL  - 45
DO  - 10.1016/j.foodhyd.2014.10.001
ER  - 

@article{
author = "Lević, Steva and Pajić-Lijaković, Ivana and Đorđević, Verica and Rac, Vladislav and Rakić, Vesna M. and Šolević Knudsen, Tatjana and Pavlović, Vladimir B. and Bugarski, Branko and Nedović, Viktor",
year = "2015",
abstract = "In this study, calcium alginate beads immobilizing D-limonene (solid systems) have been manufactured starting from emulsions of this flavor in sodium alginate (liquid systems). The effects of alginate concentration (0.02 and 0.03 g/mL) and flavor content (5 and 10 % w/w) on viscosity, conductivity and stability of emulsions were investigated. The flavor droplets in emulsions are bigger as polymer solution is more concentrated and contains more of the flavor. When emulsions have been subjected to electrostatic extrusion and upon Na+-Ca2+ ion exchange, smaller (similar to 960 to similar to 1450 mm) and less spherical beads were obtained (sphericity factor 0.003-0.21) compared to beads produced by simple dripping technique (without electrostatic field). When wet beads were air dried, they shrunk less if they had higher content of the flavor. Novel mathematical model describing swelling kinetics of dried beads is developed. In this work, D-limonene was efficiently immobilized within Ca-alginate beads (immobilization efficiency similar to 50 to similar to 77%) and its thermal stability was confirmed by TG/MS analysis.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Food Hydrocolloids",
title = "Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion",
pages = "123-111",
volume = "45",
doi = "10.1016/j.foodhyd.2014.10.001"
}

Lević, S., Pajić-Lijaković, I., Đorđević, V., Rac, V., Rakić, V. M., Šolević Knudsen, T., Pavlović, V. B., Bugarski, B.,& Nedović, V.. (2015). Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion. in Food Hydrocolloids
Elsevier Sci Ltd, Oxford., 45, 111-123.
https://doi.org/10.1016/j.foodhyd.2014.10.001

Lević S, Pajić-Lijaković I, Đorđević V, Rac V, Rakić VM, Šolević Knudsen T, Pavlović VB, Bugarski B, Nedović V. Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion. in Food Hydrocolloids. 2015;45:111-123.
doi:10.1016/j.foodhyd.2014.10.001 .

Lević, Steva, Pajić-Lijaković, Ivana, Đorđević, Verica, Rac, Vladislav, Rakić, Vesna M., Šolević Knudsen, Tatjana, Pavlović, Vladimir B., Bugarski, Branko, Nedović, Viktor, "Characterization of sodium alginate/D-limonene emulsions and respective calcium alginate/D-limonene beads produced by electrostatic extrusion" in Food Hydrocolloids, 45 (2015):111-123,
https://doi.org/10.1016/j.foodhyd.2014.10.001 . .

TY  - JOUR
AU  - Simić, Aleksandar
AU  - Živanović, Iva
AU  - Rajić, Nevenka
AU  - Milutinović, Ivan
AU  - Rakić, Vesna M.
AU  - Krogstad, Tore
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2940
AB  - The zeolitic tuff (Zlatokop deposit, Vranjska Banja, Serbia) containing 70% of clinoptilolite was used as a manure additive in this work. Clinoptilolite as a binding agent can be “carrier” of ammonia ion. In the present study, cattle manure enriched with clinoptilolite was applied as an organomineral fertilizer. The experiment was carried out on a natural pasture in period 2012-14 in Western Serbia. It included five different treatments: a) control without fertilizer; b) pure fermented cattle manure (30 t ha-1); c) organomineral fertilizer (30 t ha-1 cattle manure +10 wt.% zeolite); d) pure zeolite (3 t ha-1); and e) nitrogen application by mineral fertilizer, 50 kg ha-1 N in the first year and 30 kg ha-1 N in the second year. The fertilizers were applied in autumn, except mineral fertilizer which was applied in spring. The dry matter (DM) contents and the botanical compositions of forage were estimated for two years. Treatments with manure, organomineral fertilizer and mineral N application gave higher DM yield compared to control plots, and changes have been reflected on pasture composition, which affected forage quality.
AB  - U radu je korišćen prirodni zeolitski tuf (sa kopa Zlatokop, Vranjska Banja, koji sadrži 70% zeolita klinoptilolita) kao dodatak svežem stajnjaku. Klinoptilolit se zbog velikog afiniteta za vezivanje amonijaka može koristiti kao njegov “nosač”. Po dodavanju zeolitskog tufa svežem stajnjaku i posle fermentacije (zrenja) ovog kompleksa dobijeno je organomineralno đubrivo koje je tokom ispitivanja (2012-2014) primenjivano na pašnjaku u zapadnoj Srbiji. Primenjeno je 5 tretmana: kontrola bez đubrenja, zeolit u količini 3 t ha-1, zreo stajnjak u kolicini od 30 t ha-1 i zreo stajnjak izmešan sa zeolitom u kolicini 30 t ha- !+10% zeolit, kao i mineralno azotno đubrivo KAN u količini od 50 kg N ha-1 prve godine i 30 kg N ha-1 druge godine. Đubrenje je obavljeno u jesen, a prihrana mineralnim đubrivom u proleće. Praćen je prinos i botanički sastav naredne dve vegatacione sezone. Prinos krme je rastao u odnosu na kontrolu pri đubrenju stajnjakom, stajnjakom sa zeolitom i KAN-om; a promene su se odrazile i na botanički sastav pašnjaka, što je uticalo na kvalitet dobijene krme.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production
T1  - Primena organomineralnih đubriva sa dodatim klinoptilolitom u proizvodnji kabaste stočne hrane
EP  - 131
IS  - 1-2
SP  - 125
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2940
ER  - 

@article{
author = "Simić, Aleksandar and Živanović, Iva and Rajić, Nevenka and Milutinović, Ivan and Rakić, Vesna M. and Krogstad, Tore",
year = "2015",
abstract = "The zeolitic tuff (Zlatokop deposit, Vranjska Banja, Serbia) containing 70% of clinoptilolite was used as a manure additive in this work. Clinoptilolite as a binding agent can be “carrier” of ammonia ion. In the present study, cattle manure enriched with clinoptilolite was applied as an organomineral fertilizer. The experiment was carried out on a natural pasture in period 2012-14 in Western Serbia. It included five different treatments: a) control without fertilizer; b) pure fermented cattle manure (30 t ha-1); c) organomineral fertilizer (30 t ha-1 cattle manure +10 wt.% zeolite); d) pure zeolite (3 t ha-1); and e) nitrogen application by mineral fertilizer, 50 kg ha-1 N in the first year and 30 kg ha-1 N in the second year. The fertilizers were applied in autumn, except mineral fertilizer which was applied in spring. The dry matter (DM) contents and the botanical compositions of forage were estimated for two years. Treatments with manure, organomineral fertilizer and mineral N application gave higher DM yield compared to control plots, and changes have been reflected on pasture composition, which affected forage quality., U radu je korišćen prirodni zeolitski tuf (sa kopa Zlatokop, Vranjska Banja, koji sadrži 70% zeolita klinoptilolita) kao dodatak svežem stajnjaku. Klinoptilolit se zbog velikog afiniteta za vezivanje amonijaka može koristiti kao njegov “nosač”. Po dodavanju zeolitskog tufa svežem stajnjaku i posle fermentacije (zrenja) ovog kompleksa dobijeno je organomineralno đubrivo koje je tokom ispitivanja (2012-2014) primenjivano na pašnjaku u zapadnoj Srbiji. Primenjeno je 5 tretmana: kontrola bez đubrenja, zeolit u količini 3 t ha-1, zreo stajnjak u kolicini od 30 t ha-1 i zreo stajnjak izmešan sa zeolitom u kolicini 30 t ha- !+10% zeolit, kao i mineralno azotno đubrivo KAN u količini od 50 kg N ha-1 prve godine i 30 kg N ha-1 druge godine. Đubrenje je obavljeno u jesen, a prihrana mineralnim đubrivom u proleće. Praćen je prinos i botanički sastav naredne dve vegatacione sezone. Prinos krme je rastao u odnosu na kontrolu pri đubrenju stajnjakom, stajnjakom sa zeolitom i KAN-om; a promene su se odrazile i na botanički sastav pašnjaka, što je uticalo na kvalitet dobijene krme.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production, Primena organomineralnih đubriva sa dodatim klinoptilolitom u proizvodnji kabaste stočne hrane",
pages = "131-125",
number = "1-2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2940"
}

Simić, A., Živanović, I., Rajić, N., Milutinović, I., Rakić, V. M.,& Krogstad, T.. (2015). Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(1-2), 125-131.
https://hdl.handle.net/21.15107/rcub_technorep_2940

Simić A, Živanović I, Rajić N, Milutinović I, Rakić VM, Krogstad T. Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(1-2):125-131.
https://hdl.handle.net/21.15107/rcub_technorep_2940 .

Simić, Aleksandar, Živanović, Iva, Rajić, Nevenka, Milutinović, Ivan, Rakić, Vesna M., Krogstad, Tore, "Application of organomineral fertilizers enriched by clinoptilolite in voluminous forage production" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 1-2 (2015):125-131,
https://hdl.handle.net/21.15107/rcub_technorep_2940 .

TY  - JOUR
AU  - Rakić, Vesna M.
AU  - Simić, Aleksandar
AU  - Živanović, Iva
AU  - Rac, Vladislav
AU  - Rajić, Nevenka
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2942
AB  - Zeolites are natural microporous crystals that are formed by the elements from the earth’s core: silicon, aluminium and oxygen, Natural zeolite deposits were formed millions of years ago from volcanic ash, There are about 50 types of natural zeolites, Zeolites can be used for various applications in industry, agriculture, environment protection. Application of natural zeolites in agriculture is based on their ability to bind other substances through mechanisms of ion change or adsorption, The zeolites exhibit affinity for the binding (removal) of ammonia from aqueous solutions, This enables their use in agriculture and horticulture: zeolites are used as nitrogen fertilizers, since they can adsorb ammonium ions from manure, Their application in purification of wastewaters from agriculture is also possible, As soil additives, they can reduce the acceptance of mercury and other heavy metals by plants, thus preventing their entrance in the food chains, The most commonly used natural zeolite is clinoptilolite, due to its high dehydrating capacity, high adsorption and ion exchange capacities and catalytic activities. This paper presents a literature review on the use of natural zeolites in agriculture; with special emphasis on the application of clinoptilolite as adsorbent of ammonia and as a carrier of fertilizers of pastures and meadows.
AB  - Zeoliti su prirodni mikroporozni kristali koji se sastoje od elemenata iz Zemljine kore: silicijuma, aluminijuma i kiseonika. Prirodni zeolitski depoziti nastali su pre više miliona godina od vulkanskog pepela. Postoji oko 50 vrsta prirodnih zeolita. Zeoliti se koriste za različite primene: u industriji, poljoprivredi, zaštiti okoline. Primena prirodnih zeolita u poljoprivredi bazira se na njihovoj sposobnosti za vezivanje drugih susptanci mehanizmom jonske izmene ili adsorpcijom. Zeoliti pokazuju afinitet za vezivanje (uklanjanje) amonijaka iz vodenih rastvora. Ovo omogućava njihovu primenu u poljoprivredi i hortikulturi. Kako mogu da vrše adsorpciju amonijum jona iz stajnjaka zeoliti se u smesi sa stajnjakom mogu koristiti kao azotna organomineralna đubriva,. Takođe je moguća njihova primena u prečišćavanju otpadnih poljoprivrednih voda. Kao dodaci zemljištu, mogu da redukuju prihvatanje žive i ostalih teških metala od strane biljaka, i tako spreče njihov ulazak u lance ishrane. Najčešće korišćen prirodni zeolit je klinoptilolit, zbog svog visokog adsorpcionog kapaciteta, mogućnosti jonske izmene i primene kao katalizatora, kao i zbog visokog dehidratacionog kapaciteta. Ovaj rad donosi pregled literaturnih rezultata na temu korišćenja prirodnih zeolita u poljoprivredi; sa posebnim osvrtom na upotrebu klinoptilolita kao adsorbenta amonijaka i mogućnost njegovog korišćenja kao nosača za đubrenje livada i pašnjaka.
PB  - Institut PKB Agroekonomik, Padinska skela
T2  - Zbornik naučnih radova Instituta PKB Agroekonomik
T1  - The application of natural zeolites in agriculture
T1  - Upotreba iznačaj prirodnog zeolita u poljoprivredi
EP  - 183
IS  - 1-2
SP  - 173
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2942
ER  - 

@article{
author = "Rakić, Vesna M. and Simić, Aleksandar and Živanović, Iva and Rac, Vladislav and Rajić, Nevenka",
year = "2015",
abstract = "Zeolites are natural microporous crystals that are formed by the elements from the earth’s core: silicon, aluminium and oxygen, Natural zeolite deposits were formed millions of years ago from volcanic ash, There are about 50 types of natural zeolites, Zeolites can be used for various applications in industry, agriculture, environment protection. Application of natural zeolites in agriculture is based on their ability to bind other substances through mechanisms of ion change or adsorption, The zeolites exhibit affinity for the binding (removal) of ammonia from aqueous solutions, This enables their use in agriculture and horticulture: zeolites are used as nitrogen fertilizers, since they can adsorb ammonium ions from manure, Their application in purification of wastewaters from agriculture is also possible, As soil additives, they can reduce the acceptance of mercury and other heavy metals by plants, thus preventing their entrance in the food chains, The most commonly used natural zeolite is clinoptilolite, due to its high dehydrating capacity, high adsorption and ion exchange capacities and catalytic activities. This paper presents a literature review on the use of natural zeolites in agriculture; with special emphasis on the application of clinoptilolite as adsorbent of ammonia and as a carrier of fertilizers of pastures and meadows., Zeoliti su prirodni mikroporozni kristali koji se sastoje od elemenata iz Zemljine kore: silicijuma, aluminijuma i kiseonika. Prirodni zeolitski depoziti nastali su pre više miliona godina od vulkanskog pepela. Postoji oko 50 vrsta prirodnih zeolita. Zeoliti se koriste za različite primene: u industriji, poljoprivredi, zaštiti okoline. Primena prirodnih zeolita u poljoprivredi bazira se na njihovoj sposobnosti za vezivanje drugih susptanci mehanizmom jonske izmene ili adsorpcijom. Zeoliti pokazuju afinitet za vezivanje (uklanjanje) amonijaka iz vodenih rastvora. Ovo omogućava njihovu primenu u poljoprivredi i hortikulturi. Kako mogu da vrše adsorpciju amonijum jona iz stajnjaka zeoliti se u smesi sa stajnjakom mogu koristiti kao azotna organomineralna đubriva,. Takođe je moguća njihova primena u prečišćavanju otpadnih poljoprivrednih voda. Kao dodaci zemljištu, mogu da redukuju prihvatanje žive i ostalih teških metala od strane biljaka, i tako spreče njihov ulazak u lance ishrane. Najčešće korišćen prirodni zeolit je klinoptilolit, zbog svog visokog adsorpcionog kapaciteta, mogućnosti jonske izmene i primene kao katalizatora, kao i zbog visokog dehidratacionog kapaciteta. Ovaj rad donosi pregled literaturnih rezultata na temu korišćenja prirodnih zeolita u poljoprivredi; sa posebnim osvrtom na upotrebu klinoptilolita kao adsorbenta amonijaka i mogućnost njegovog korišćenja kao nosača za đubrenje livada i pašnjaka.",
publisher = "Institut PKB Agroekonomik, Padinska skela",
journal = "Zbornik naučnih radova Instituta PKB Agroekonomik",
title = "The application of natural zeolites in agriculture, Upotreba iznačaj prirodnog zeolita u poljoprivredi",
pages = "183-173",
number = "1-2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2942"
}

Rakić, V. M., Simić, A., Živanović, I., Rac, V.,& Rajić, N.. (2015). The application of natural zeolites in agriculture. in Zbornik naučnih radova Instituta PKB Agroekonomik
Institut PKB Agroekonomik, Padinska skela., 21(1-2), 173-183.
https://hdl.handle.net/21.15107/rcub_technorep_2942

Rakić VM, Simić A, Živanović I, Rac V, Rajić N. The application of natural zeolites in agriculture. in Zbornik naučnih radova Instituta PKB Agroekonomik. 2015;21(1-2):173-183.
https://hdl.handle.net/21.15107/rcub_technorep_2942 .

Rakić, Vesna M., Simić, Aleksandar, Živanović, Iva, Rac, Vladislav, Rajić, Nevenka, "The application of natural zeolites in agriculture" in Zbornik naučnih radova Instituta PKB Agroekonomik, 21, no. 1-2 (2015):173-183,
https://hdl.handle.net/21.15107/rcub_technorep_2942 .

TY  - JOUR
AU  - Milovanović, Jelena
AU  - Eich-Greatorex, Susanne
AU  - Krogstad, Tore
AU  - Rakić, Vesna M.
AU  - Rajić, Nevenka
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3065
AB  - Clinoptilolite-rich tuff (NZ) from the Zlatokop deposit (Vranjska Banja, Serbia) was studied as a nitrogen carrier for grass production. The mechanism of binding ammonium cations present in aqueous solutions by NZ was examined, as well as the possibility of adsorption of ammonia released in fresh cattle manure during its fermentation. The NH4+ binding from solutions proceeded via an ion-exchange process that followed pseudo-second-order kinetics. Adsorption isotherms studied at 298-318 K followed the Freundlich isotherm equation. The NZ readily adsorbs ammonia liberated from manure and the addition of 10 wt. % of NZ to manure can preserve up to 90 % of ammonia. The potential benefit of this effect was examined in greenhouse pot experiments with Italian ryegrass (Lolium multiflorum, var. Macho) using three different types of soil (silty, clayey and sandy). The zeta potential measurements showed that the stability of their colloidal dispersions differed mutually and that the addition of NZ affected the stability and nitrogen cycling differently. All results indicated that NZ could be applied in grass production.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - The use in grass production of clinoptilolite as an ammonia adsorbent and a nitrogen carrier
EP  - 1214
IS  - 9
SP  - 1203
VL  - 80
DO  - 10.2298/JSC150317042M
ER  - 

@article{
author = "Milovanović, Jelena and Eich-Greatorex, Susanne and Krogstad, Tore and Rakić, Vesna M. and Rajić, Nevenka",
year = "2015",
abstract = "Clinoptilolite-rich tuff (NZ) from the Zlatokop deposit (Vranjska Banja, Serbia) was studied as a nitrogen carrier for grass production. The mechanism of binding ammonium cations present in aqueous solutions by NZ was examined, as well as the possibility of adsorption of ammonia released in fresh cattle manure during its fermentation. The NH4+ binding from solutions proceeded via an ion-exchange process that followed pseudo-second-order kinetics. Adsorption isotherms studied at 298-318 K followed the Freundlich isotherm equation. The NZ readily adsorbs ammonia liberated from manure and the addition of 10 wt. % of NZ to manure can preserve up to 90 % of ammonia. The potential benefit of this effect was examined in greenhouse pot experiments with Italian ryegrass (Lolium multiflorum, var. Macho) using three different types of soil (silty, clayey and sandy). The zeta potential measurements showed that the stability of their colloidal dispersions differed mutually and that the addition of NZ affected the stability and nitrogen cycling differently. All results indicated that NZ could be applied in grass production.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "The use in grass production of clinoptilolite as an ammonia adsorbent and a nitrogen carrier",
pages = "1214-1203",
number = "9",
volume = "80",
doi = "10.2298/JSC150317042M"
}

Milovanović, J., Eich-Greatorex, S., Krogstad, T., Rakić, V. M.,& Rajić, N.. (2015). The use in grass production of clinoptilolite as an ammonia adsorbent and a nitrogen carrier. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 80(9), 1203-1214.
https://doi.org/10.2298/JSC150317042M

Milovanović J, Eich-Greatorex S, Krogstad T, Rakić VM, Rajić N. The use in grass production of clinoptilolite as an ammonia adsorbent and a nitrogen carrier. in Journal of the Serbian Chemical Society. 2015;80(9):1203-1214.
doi:10.2298/JSC150317042M .

Milovanović, Jelena, Eich-Greatorex, Susanne, Krogstad, Tore, Rakić, Vesna M., Rajić, Nevenka, "The use in grass production of clinoptilolite as an ammonia adsorbent and a nitrogen carrier" in Journal of the Serbian Chemical Society, 80, no. 9 (2015):1203-1214,
https://doi.org/10.2298/JSC150317042M . .

TY  - JOUR
AU  - Brković, Danijela V
AU  - Avramov-Ivić, Milka
AU  - Rakić, Vesna M.
AU  - Valentini, Luca
AU  - Uskoković, Petar
AU  - Marinković, Aleksandar
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2982
AB  - Covalent sidewall functionalization of multiwalled carbon nanotubes (MWCNTs) has been performed using two approaches, direct and indirect cycloaddition through diethyl malonate, based on the Bingel reaction. The results revealed that functionalized MWCNTs demonstrated enhanced electrical properties and significantly lower sheet resistance, especially after electric field thermal assisted annealing at 80 degrees C was performed. The presence of 1,3-dicarbonyl compounds caused the surface of MWCNTs to be more hydrophilic, approachable for the electrolyte and improved the capacitance performance of Au/MWCNTs electrodes. The modified MWCNTs have been incorporated into nanocomposites by using solution mixing method with polyaniline and drop-casting resulting mixture on the paper substrate. The reduction in the sheet resistance with increasing the content of MWCNTs in the prepared nanocomposite films has been achieved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction
EP  - 134
SP  - 121
VL  - 83
DO  - 10.1016/j.jpcs.2015.04.004
ER  - 

@article{
author = "Brković, Danijela V and Avramov-Ivić, Milka and Rakić, Vesna M. and Valentini, Luca and Uskoković, Petar and Marinković, Aleksandar",
year = "2015",
abstract = "Covalent sidewall functionalization of multiwalled carbon nanotubes (MWCNTs) has been performed using two approaches, direct and indirect cycloaddition through diethyl malonate, based on the Bingel reaction. The results revealed that functionalized MWCNTs demonstrated enhanced electrical properties and significantly lower sheet resistance, especially after electric field thermal assisted annealing at 80 degrees C was performed. The presence of 1,3-dicarbonyl compounds caused the surface of MWCNTs to be more hydrophilic, approachable for the electrolyte and improved the capacitance performance of Au/MWCNTs electrodes. The modified MWCNTs have been incorporated into nanocomposites by using solution mixing method with polyaniline and drop-casting resulting mixture on the paper substrate. The reduction in the sheet resistance with increasing the content of MWCNTs in the prepared nanocomposite films has been achieved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction",
pages = "134-121",
volume = "83",
doi = "10.1016/j.jpcs.2015.04.004"
}

Brković, D. V., Avramov-Ivić, M., Rakić, V. M., Valentini, L., Uskoković, P.,& Marinković, A.. (2015). Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 83, 121-134.
https://doi.org/10.1016/j.jpcs.2015.04.004

Brković DV, Avramov-Ivić M, Rakić VM, Valentini L, Uskoković P, Marinković A. Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction. in Journal of Physics and Chemistry of Solids. 2015;83:121-134.
doi:10.1016/j.jpcs.2015.04.004 .

Brković, Danijela V, Avramov-Ivić, Milka, Rakić, Vesna M., Valentini, Luca, Uskoković, Petar, Marinković, Aleksandar, "Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction" in Journal of Physics and Chemistry of Solids, 83 (2015):121-134,
https://doi.org/10.1016/j.jpcs.2015.04.004 . .

TY  - JOUR
AU  - Rakić, Vesna M.
AU  - Rajić, Nevenka
AU  - Daković, Aleksandra
AU  - Auroux, Aline
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2503
AB  - In this study, adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto clinoptilolite modified with sorbed metallic cations (Cu(II), Zn(II), Ni(II) or Mn(II)) have been probed. Natural clays (kaolin and bentonite, pure or ion-exchanged by octadecyl dimethyl benzyl ammonium chloride) have been also probed as adsorbents. The adsorption was studied at 30 degrees C by titration microcalorimetry, employed to obtain the heats evolved as a result of adsorption. Adsorption experiments were performed under the same conditions, the equilibrium adsorbate concentrations were determined by fluorescence spectrophotometry. The maximal adsorption capacities of investigated solids against target pharmaceuticals lie in the range of 10(-5)-10(-6) mol/g. Modified minerals have shown different capacities in comparison with natural ones. The adsorption capacities are dependent on the characteristics of pharmaceutically active compound. The results obtained in this work show that natural materials can be used effectively in the removal of investigated pharmaceuticals by adsorption.
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin
EP  - 194
SP  - 185
VL  - 166
DO  - 10.1016/j.micromeso.2012.04.049
ER  - 

@article{
author = "Rakić, Vesna M. and Rajić, Nevenka and Daković, Aleksandra and Auroux, Aline",
year = "2013",
abstract = "In this study, adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto clinoptilolite modified with sorbed metallic cations (Cu(II), Zn(II), Ni(II) or Mn(II)) have been probed. Natural clays (kaolin and bentonite, pure or ion-exchanged by octadecyl dimethyl benzyl ammonium chloride) have been also probed as adsorbents. The adsorption was studied at 30 degrees C by titration microcalorimetry, employed to obtain the heats evolved as a result of adsorption. Adsorption experiments were performed under the same conditions, the equilibrium adsorbate concentrations were determined by fluorescence spectrophotometry. The maximal adsorption capacities of investigated solids against target pharmaceuticals lie in the range of 10(-5)-10(-6) mol/g. Modified minerals have shown different capacities in comparison with natural ones. The adsorption capacities are dependent on the characteristics of pharmaceutically active compound. The results obtained in this work show that natural materials can be used effectively in the removal of investigated pharmaceuticals by adsorption.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin",
pages = "194-185",
volume = "166",
doi = "10.1016/j.micromeso.2012.04.049"
}

Rakić, V. M., Rajić, N., Daković, A.,& Auroux, A.. (2013). The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 166, 185-194.
https://doi.org/10.1016/j.micromeso.2012.04.049

Rakić VM, Rajić N, Daković A, Auroux A. The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin. in Microporous and Mesoporous Materials. 2013;166:185-194.
doi:10.1016/j.micromeso.2012.04.049 .

Rakić, Vesna M., Rajić, Nevenka, Daković, Aleksandra, Auroux, Aline, "The adsorption of salicylic acid, acetylsalicylic acid and atenolol from aqueous solutions onto natural zeolites and clays: Clinoptilolite, bentonite and kaolin" in Microporous and Mesoporous Materials, 166 (2013):185-194,
https://doi.org/10.1016/j.micromeso.2012.04.049 . .

TY  - JOUR
AU  - Lević, Steva
AU  - Rac, Vladislav
AU  - Manojlović, Verica
AU  - Rakić, Vesna M.
AU  - Bugarski, Branko
AU  - Flock, Teresa
AU  - Krzyczmonik, Katarzyna Ewa
AU  - Nedović, Viktor
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1878
AB  - Aroma is one of the most important characteristics of food products. Substances used as aromas are usually composed of many volatile and odorous organic species. They are usually thermally sensitive chemical compounds, which require special treatment during food processing. Consequently, the degradation of aroma compounds during production, storage and/or transport could be critical in terms of stability and quality. Encapsulation might be one of the methods which could be used in order to improve aroma quality and stability. The aim of this study was to create a stable alginate/polyvinyl alcohol formulations, which could be used in order to protect and improve stability of liquid aroma compounds such as d-limonene (4-isopropenyl-1-methylcyclohexene). Encapsulation of d-limonene in calcium alginate/polyvinyl alcohol matrix was realized by "freezing-thawing" method in order to assure formation of polyvinyl alcohol cryogel structure. Afterwards, samples were immersed in calcium chloride solution for calcium alginate gel formation. In order to investigate thermal decomposition of alginate/polyvinyl alcohol matrix and kinetics of aroma release, the samples of encapsulated d-limonene were investigated by thermogravimetry (TG). The initial aroma concentrations were in the range 1-10% w/w, while the polyvinyl alcohol concentration varied in the range 5-20% w/w. It was found that thermal properties of encapsulated aroma depend on thermal properties of the matrix. Maximum weight loss of free d-limonene occurred at about 120 degrees C, while in a case of encapsulated aroma, weight loss occurred at higher temperatures. The results indicate better stability of the encapsulated d-limonene in comparison with free aroma. Therefore, alginate/polyvinyl alcohol system can be considered as suitable for aroma encapsulation.
PB  - Elsevier Science Bv, Amsterdam
T2  - 11th International Congress on Engineering and Food (ICEF11)
T1  - Limonene encapsulation in alginate/poly (vinyl alcohol)
EP  - 1820
SP  - 1816
VL  - 1
DO  - 10.1016/j.profoo.2011.09.266
ER  - 

@article{
author = "Lević, Steva and Rac, Vladislav and Manojlović, Verica and Rakić, Vesna M. and Bugarski, Branko and Flock, Teresa and Krzyczmonik, Katarzyna Ewa and Nedović, Viktor",
year = "2011",
abstract = "Aroma is one of the most important characteristics of food products. Substances used as aromas are usually composed of many volatile and odorous organic species. They are usually thermally sensitive chemical compounds, which require special treatment during food processing. Consequently, the degradation of aroma compounds during production, storage and/or transport could be critical in terms of stability and quality. Encapsulation might be one of the methods which could be used in order to improve aroma quality and stability. The aim of this study was to create a stable alginate/polyvinyl alcohol formulations, which could be used in order to protect and improve stability of liquid aroma compounds such as d-limonene (4-isopropenyl-1-methylcyclohexene). Encapsulation of d-limonene in calcium alginate/polyvinyl alcohol matrix was realized by "freezing-thawing" method in order to assure formation of polyvinyl alcohol cryogel structure. Afterwards, samples were immersed in calcium chloride solution for calcium alginate gel formation. In order to investigate thermal decomposition of alginate/polyvinyl alcohol matrix and kinetics of aroma release, the samples of encapsulated d-limonene were investigated by thermogravimetry (TG). The initial aroma concentrations were in the range 1-10% w/w, while the polyvinyl alcohol concentration varied in the range 5-20% w/w. It was found that thermal properties of encapsulated aroma depend on thermal properties of the matrix. Maximum weight loss of free d-limonene occurred at about 120 degrees C, while in a case of encapsulated aroma, weight loss occurred at higher temperatures. The results indicate better stability of the encapsulated d-limonene in comparison with free aroma. Therefore, alginate/polyvinyl alcohol system can be considered as suitable for aroma encapsulation.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "11th International Congress on Engineering and Food (ICEF11)",
title = "Limonene encapsulation in alginate/poly (vinyl alcohol)",
pages = "1820-1816",
volume = "1",
doi = "10.1016/j.profoo.2011.09.266"
}

Lević, S., Rac, V., Manojlović, V., Rakić, V. M., Bugarski, B., Flock, T., Krzyczmonik, K. E.,& Nedović, V.. (2011). Limonene encapsulation in alginate/poly (vinyl alcohol). in 11th International Congress on Engineering and Food (ICEF11)
Elsevier Science Bv, Amsterdam., 1, 1816-1820.
https://doi.org/10.1016/j.profoo.2011.09.266

Lević S, Rac V, Manojlović V, Rakić VM, Bugarski B, Flock T, Krzyczmonik KE, Nedović V. Limonene encapsulation in alginate/poly (vinyl alcohol). in 11th International Congress on Engineering and Food (ICEF11). 2011;1:1816-1820.
doi:10.1016/j.profoo.2011.09.266 .

Lević, Steva, Rac, Vladislav, Manojlović, Verica, Rakić, Vesna M., Bugarski, Branko, Flock, Teresa, Krzyczmonik, Katarzyna Ewa, Nedović, Viktor, "Limonene encapsulation in alginate/poly (vinyl alcohol)" in 11th International Congress on Engineering and Food (ICEF11), 1 (2011):1816-1820,
https://doi.org/10.1016/j.profoo.2011.09.266 . .

TY  - CONF
AU  - Maksin, Danijela
AU  - Nastasović, Aleksandra
AU  - Hercigonja, Radmila
AU  - Rakić, Vesna
AU  - Onjia, Antonije
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7229
AB  - Three nonporous methacrylate polymer samples were synthesized by suspension
polymerization, and subsequently investigated. The surface area and the surface
morphology of the spherical beads were examined by the BET method from the
low-temperature adsorption isotherms and by scanning electron microscopy
(SEM), respectively. Thermal behaviour of the two homopolymer samples,
poly(glycidyl methacrylate) (PGMA) and poly(ethylene glycol dimethacrylate)
(PEGDMA), and the copolymer sample poly(glycidyl methacrylate-co-ethylene
glycol dimethacrylate) (PGME) was investigated by thermogravimetric analysis
(TGA) and differential scanning calorimetry (DSC). All samples exhibit complex
thermal degradation behavior. The copolymer is intermediate in stability between
PGMA and PEGDMA.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade
T1  - Thermal behaviour of some nonporous methacrylate polymers
EP  - 514
SP  - 512
VL  - 1
UR  - https://hdl.handle.net/21.15107/rcub_technorep_7229
ER  - 

@conference{
author = "Maksin, Danijela and Nastasović, Aleksandra and Hercigonja, Radmila and Rakić, Vesna and Onjia, Antonije",
year = "2010",
abstract = "Three nonporous methacrylate polymer samples were synthesized by suspension
polymerization, and subsequently investigated. The surface area and the surface
morphology of the spherical beads were examined by the BET method from the
low-temperature adsorption isotherms and by scanning electron microscopy
(SEM), respectively. Thermal behaviour of the two homopolymer samples,
poly(glycidyl methacrylate) (PGMA) and poly(ethylene glycol dimethacrylate)
(PEGDMA), and the copolymer sample poly(glycidyl methacrylate-co-ethylene
glycol dimethacrylate) (PGME) was investigated by thermogravimetric analysis
(TGA) and differential scanning calorimetry (DSC). All samples exhibit complex
thermal degradation behavior. The copolymer is intermediate in stability between
PGMA and PEGDMA.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade",
title = "Thermal behaviour of some nonporous methacrylate polymers",
pages = "514-512",
volume = "1",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7229"
}

Maksin, D., Nastasović, A., Hercigonja, R., Rakić, V.,& Onjia, A.. (2010). Thermal behaviour of some nonporous methacrylate polymers. in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade
Belgrade : Society of Physical Chemists of Serbia., 1, 512-514.
https://hdl.handle.net/21.15107/rcub_technorep_7229

Maksin D, Nastasović A, Hercigonja R, Rakić V, Onjia A. Thermal behaviour of some nonporous methacrylate polymers. in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade. 2010;1:512-514.
https://hdl.handle.net/21.15107/rcub_technorep_7229 .

Maksin, Danijela, Nastasović, Aleksandra, Hercigonja, Radmila, Rakić, Vesna, Onjia, Antonije, "Thermal behaviour of some nonporous methacrylate polymers" in Physical Chemistry 2010 : proceedings / 10th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 21-24 September 2010, Belgrade, 1 (2010):512-514,
https://hdl.handle.net/21.15107/rcub_technorep_7229 .

TY  - JOUR
AU  - Stojaković, Đorđe
AU  - Rajić, Nevenka
AU  - Rakić, Vesna M.
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1519
AB  - A zinc phosphate with the composition [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2), containing the doubly protonated 1,2-diaminopropane (abbr. HDAP), was synthesized by hydrothermal crystallization of zinc nitrate, phosphoric acid, 1,2-diaminopropane and trimethylenedipiperidine. The single crystal analysis shows a layered inorganic-organic structure built up of a sandwich-like motif of alternating inorganic layers and HDAP cations (trimethylenedipiperidine not being a constituent of the structure). The HDAP species are found to be disordered and serve as bridges between two adjacent inorganic layers which are separated by 3.95 angstrom. The bridging interaction occurs via a hydrogen-bonding network. The inorganic layer features a pattern of four-membered rings involving two ZnO4 and two PO4 tetrahedra connected by sharing O atoms. Thermal analysis shows that the compound is stable up to 370 degrees C and that the thermal decomposition of HDAP occurs in two steps between 370 and 460 degrees C, causing the collapse of the structure. The first decomposition step corresponds to ammonia removal which proceeds with a high activation energy (E-a = 282 kJ mol (1)). The high E-a value is mainly attributed to strong electrostatic interactions between organic cations and anionic inorganic layers, the disruption of the interactions being the main reason for structural collapse after the HDAP removal.
PB  - Elsevier Science Sa, Lausanne
T2  - Inorganica Chimica Acta
T1  - Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)
EP  - 1995
IS  - 6
SP  - 1991
VL  - 362
DO  - 10.1016/j.ica.2008.09.020
ER  - 

@article{
author = "Stojaković, Đorđe and Rajić, Nevenka and Rakić, Vesna M. and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2009",
abstract = "A zinc phosphate with the composition [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2), containing the doubly protonated 1,2-diaminopropane (abbr. HDAP), was synthesized by hydrothermal crystallization of zinc nitrate, phosphoric acid, 1,2-diaminopropane and trimethylenedipiperidine. The single crystal analysis shows a layered inorganic-organic structure built up of a sandwich-like motif of alternating inorganic layers and HDAP cations (trimethylenedipiperidine not being a constituent of the structure). The HDAP species are found to be disordered and serve as bridges between two adjacent inorganic layers which are separated by 3.95 angstrom. The bridging interaction occurs via a hydrogen-bonding network. The inorganic layer features a pattern of four-membered rings involving two ZnO4 and two PO4 tetrahedra connected by sharing O atoms. Thermal analysis shows that the compound is stable up to 370 degrees C and that the thermal decomposition of HDAP occurs in two steps between 370 and 460 degrees C, causing the collapse of the structure. The first decomposition step corresponds to ammonia removal which proceeds with a high activation energy (E-a = 282 kJ mol (1)). The high E-a value is mainly attributed to strong electrostatic interactions between organic cations and anionic inorganic layers, the disruption of the interactions being the main reason for structural collapse after the HDAP removal.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)",
pages = "1995-1991",
number = "6",
volume = "362",
doi = "10.1016/j.ica.2008.09.020"
}

Stojaković, Đ., Rajić, N., Rakić, V. M., Zabukovec-Logar, N.,& Kaučič, V.. (2009). Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2). in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 362(6), 1991-1995.
https://doi.org/10.1016/j.ica.2008.09.020

Stojaković Đ, Rajić N, Rakić VM, Zabukovec-Logar N, Kaučič V. Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2). in Inorganica Chimica Acta. 2009;362(6):1991-1995.
doi:10.1016/j.ica.2008.09.020 .

Stojaković, Đorđe, Rajić, Nevenka, Rakić, Vesna M., Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)" in Inorganica Chimica Acta, 362, no. 6 (2009):1991-1995,
https://doi.org/10.1016/j.ica.2008.09.020 . .

TY  - JOUR
AU  - Milojević, M.
AU  - Dondur, V.
AU  - Damjanović, Lj.
AU  - Rakić, Vesna M.
AU  - Rajić, Nevenka
AU  - Ristić, A.
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1032
AB  - In this work, a series of iron-containing zeolitic materials has been tested as heterogeneous catalysts for decomposition of H2O2 and for oxidation of the cationic dye Methylene Blue with H2O2 in aqueous solutions. FeAPO and FeBEA zeolites, synthesized through hydrothermal crystallization of basic hydrogels, and FeY and FeZSM-5 zeolites, prepared by ion-exchange procedures, have been studied. The ion exchange with Fe(III) cations was performed from different salt solutions. Fe-exchange procedure carried out in Fe-citrate solution has been identified as an attractive option for the preparation of highly effective FeZSM-5 catalysts in wet oxidation processes. It has been shown that both tetrahedral, framework Fe, and octahedral, extra-framework Fe species incorporated into zeolite structure are catalytically active in wet oxidation reactions.
PB  - 8th Conference of the Yugoslav Materials Research Society
T2  - Materials Science Forum
T1  - The activity of iron-containing zeolitic materials for the catalytic oxidation in aqueous solutions
EP  - 218
SP  - 213
VL  - 555
DO  - 10.4028/0-87849-441-3.213
ER  - 

@article{
author = "Milojević, M. and Dondur, V. and Damjanović, Lj. and Rakić, Vesna M. and Rajić, Nevenka and Ristić, A.",
year = "2007",
abstract = "In this work, a series of iron-containing zeolitic materials has been tested as heterogeneous catalysts for decomposition of H2O2 and for oxidation of the cationic dye Methylene Blue with H2O2 in aqueous solutions. FeAPO and FeBEA zeolites, synthesized through hydrothermal crystallization of basic hydrogels, and FeY and FeZSM-5 zeolites, prepared by ion-exchange procedures, have been studied. The ion exchange with Fe(III) cations was performed from different salt solutions. Fe-exchange procedure carried out in Fe-citrate solution has been identified as an attractive option for the preparation of highly effective FeZSM-5 catalysts in wet oxidation processes. It has been shown that both tetrahedral, framework Fe, and octahedral, extra-framework Fe species incorporated into zeolite structure are catalytically active in wet oxidation reactions.",
publisher = "8th Conference of the Yugoslav Materials Research Society",
journal = "Materials Science Forum",
title = "The activity of iron-containing zeolitic materials for the catalytic oxidation in aqueous solutions",
pages = "218-213",
volume = "555",
doi = "10.4028/0-87849-441-3.213"
}

Milojević, M., Dondur, V., Damjanović, Lj., Rakić, V. M., Rajić, N.,& Ristić, A.. (2007). The activity of iron-containing zeolitic materials for the catalytic oxidation in aqueous solutions. in Materials Science Forum
8th Conference of the Yugoslav Materials Research Society., 555, 213-218.
https://doi.org/10.4028/0-87849-441-3.213

Milojević M, Dondur V, Damjanović L, Rakić VM, Rajić N, Ristić A. The activity of iron-containing zeolitic materials for the catalytic oxidation in aqueous solutions. in Materials Science Forum. 2007;555:213-218.
doi:10.4028/0-87849-441-3.213 .

Milojević, M., Dondur, V., Damjanović, Lj., Rakić, Vesna M., Rajić, Nevenka, Ristić, A., "The activity of iron-containing zeolitic materials for the catalytic oxidation in aqueous solutions" in Materials Science Forum, 555 (2007):213-218,
https://doi.org/10.4028/0-87849-441-3.213 . .