TY  - JOUR
AU  - Jovanović, Jelena
AU  - Ćirković, Jovana
AU  - Radojković, Aleksandar
AU  - Mutavdzić, Dragosav
AU  - Tanasijević, Gordana
AU  - Joksimović, Kristina
AU  - Bakić, Gordana
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3527
AB  - This investigation was aimed to develop films and coatings based on natural biopolymers and active components, with physicochemical and functional properties for application in antimicrobial packaging. Biopolymer films were obtained from emulsions and dispersions by casting method. Coatings were formed by the application of emulsions on existing packaging. Synthesis of emulsions and dispersions were performed by combining biopolymers (chitosan-gelatin, pectin-gelatin) with lemongrass essential oil (LEO), Zn(CH3COO)2.2H2O, or ZnO, as active components. Fourier transform infrared (FTIR) spectra of the films showed that the addition of glycerol contributed to the forming of strong hydrogen bonds between glycerol and chitosan-gelatin or pectin-gelatin composites, facilitating the process of polymer branching, which is substantial for encapsulation. Thermal analyses revealed two characteristic processes occurring at 110 degrees C (water evaporation) and within 215-235 degrees C (degradation of polysaccharide and glycerol). Major weight losses were observed at 290 degrees C (chitosan-gelatin films) and 215 degrees C (pectin-gelatin films). The chitosan-gelatin films exhibited a lower degree of solubility (31-21%), and better mechanical properties comparing with the pectin-gelatin films. The chitosan-gelatin emulsions and dispersions exhibited a higher antibacterial effect in vitro against E. coli, B. subtilis, and S. aureus. In the case of the pectin-gelatin emulsions, the impact of LEO on the antibacterial activity was evident. The effects of biopolymer coatings on the development of microorganisms on fresh raspberries (Rubus idaeus L.) were performed in vivo during eight days of raspberry storage at refrigerator temperature. The tested coatings extended the shelf life of stored raspberries from four to eight days. The synergistic effect between LEO and ZnO or Zn-Ac was observed both in vivo and in vitro.
PB  - Elsevier Science Sa, Lausanne
T2  - Progress in Organic Coatings
T1  - Chitosan and pectin-based films and coatings with active components for application in antimicrobial food packaging
VL  - 158
DO  - 10.1016/j.porgcoat.2021.106349
ER  - 

@article{
author = "Jovanović, Jelena and Ćirković, Jovana and Radojković, Aleksandar and Mutavdzić, Dragosav and Tanasijević, Gordana and Joksimović, Kristina and Bakić, Gordana and Branković, Goran and Branković, Zorica",
year = "2021",
abstract = "This investigation was aimed to develop films and coatings based on natural biopolymers and active components, with physicochemical and functional properties for application in antimicrobial packaging. Biopolymer films were obtained from emulsions and dispersions by casting method. Coatings were formed by the application of emulsions on existing packaging. Synthesis of emulsions and dispersions were performed by combining biopolymers (chitosan-gelatin, pectin-gelatin) with lemongrass essential oil (LEO), Zn(CH3COO)2.2H2O, or ZnO, as active components. Fourier transform infrared (FTIR) spectra of the films showed that the addition of glycerol contributed to the forming of strong hydrogen bonds between glycerol and chitosan-gelatin or pectin-gelatin composites, facilitating the process of polymer branching, which is substantial for encapsulation. Thermal analyses revealed two characteristic processes occurring at 110 degrees C (water evaporation) and within 215-235 degrees C (degradation of polysaccharide and glycerol). Major weight losses were observed at 290 degrees C (chitosan-gelatin films) and 215 degrees C (pectin-gelatin films). The chitosan-gelatin films exhibited a lower degree of solubility (31-21%), and better mechanical properties comparing with the pectin-gelatin films. The chitosan-gelatin emulsions and dispersions exhibited a higher antibacterial effect in vitro against E. coli, B. subtilis, and S. aureus. In the case of the pectin-gelatin emulsions, the impact of LEO on the antibacterial activity was evident. The effects of biopolymer coatings on the development of microorganisms on fresh raspberries (Rubus idaeus L.) were performed in vivo during eight days of raspberry storage at refrigerator temperature. The tested coatings extended the shelf life of stored raspberries from four to eight days. The synergistic effect between LEO and ZnO or Zn-Ac was observed both in vivo and in vitro.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Progress in Organic Coatings",
title = "Chitosan and pectin-based films and coatings with active components for application in antimicrobial food packaging",
volume = "158",
doi = "10.1016/j.porgcoat.2021.106349"
}

Jovanović, J., Ćirković, J., Radojković, A., Mutavdzić, D., Tanasijević, G., Joksimović, K., Bakić, G., Branković, G.,& Branković, Z.. (2021). Chitosan and pectin-based films and coatings with active components for application in antimicrobial food packaging. in Progress in Organic Coatings
Elsevier Science Sa, Lausanne., 158.
https://doi.org/10.1016/j.porgcoat.2021.106349

Jovanović J, Ćirković J, Radojković A, Mutavdzić D, Tanasijević G, Joksimović K, Bakić G, Branković G, Branković Z. Chitosan and pectin-based films and coatings with active components for application in antimicrobial food packaging. in Progress in Organic Coatings. 2021;158.
doi:10.1016/j.porgcoat.2021.106349 .

Jovanović, Jelena, Ćirković, Jovana, Radojković, Aleksandar, Mutavdzić, Dragosav, Tanasijević, Gordana, Joksimović, Kristina, Bakić, Gordana, Branković, Goran, Branković, Zorica, "Chitosan and pectin-based films and coatings with active components for application in antimicrobial food packaging" in Progress in Organic Coatings, 158 (2021),
https://doi.org/10.1016/j.porgcoat.2021.106349 . .

TY  - CONF
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Blanuša, Jovan
AU  - Branković, Goran
AU  - Spreitzer, Matjaž
AU  - Krstić, Jugoslav B.
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6783
AB  - In order to obtain nanocrystalline material which can be used in MLCC production, the investigations of the influence of BaTiO3 powder tribophysical activation (TPA) on its structural changes, dielectric and ferroelectric properties have been performed. Microstructure development and crystal structure have been studied by mercury porosimetry method, SEM, EDS and X-ray powder diffraction analyses. The modifications of dielectric and ferroelectric properties of sintered samples have been examined and correlated with observed structural changes induced by TPA of starting powders. It has been found that dielectric and ferroelectric properties of tribophysically activated BaTiO3 could be tuned by controlling the grain size and lattice strain of activated nanostructured material.
PB  - Belgrade : Serbian Ceramic Society
C3  - Serbian Ceramic Society Conference - Advanced Ceramics and Application: Program and the Book of Abstracts, May 10-11th, 2012, Belgrade, Serbia
T1  - Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3
EP  - 25
SP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6783
ER  - 

@conference{
author = "Pavlović, Vera P. and Pavlović, Vladimir B. and Blanuša, Jovan and Branković, Goran and Spreitzer, Matjaž and Krstić, Jugoslav B.",
year = "2012",
abstract = "In order to obtain nanocrystalline material which can be used in MLCC production, the investigations of the influence of BaTiO3 powder tribophysical activation (TPA) on its structural changes, dielectric and ferroelectric properties have been performed. Microstructure development and crystal structure have been studied by mercury porosimetry method, SEM, EDS and X-ray powder diffraction analyses. The modifications of dielectric and ferroelectric properties of sintered samples have been examined and correlated with observed structural changes induced by TPA of starting powders. It has been found that dielectric and ferroelectric properties of tribophysically activated BaTiO3 could be tuned by controlling the grain size and lattice strain of activated nanostructured material.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Serbian Ceramic Society Conference - Advanced Ceramics and Application: Program and the Book of Abstracts, May 10-11th, 2012, Belgrade, Serbia",
title = "Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6783"
}

Pavlović, V. P., Pavlović, V. B., Blanuša, J., Branković, G., Spreitzer, M.,& Krstić, J. B.. (2012). Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3. in Serbian Ceramic Society Conference - Advanced Ceramics and Application: Program and the Book of Abstracts, May 10-11th, 2012, Belgrade, Serbia
Belgrade : Serbian Ceramic Society., 25-25.
https://hdl.handle.net/21.15107/rcub_machinery_6783

Pavlović VP, Pavlović VB, Blanuša J, Branković G, Spreitzer M, Krstić JB. Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3. in Serbian Ceramic Society Conference - Advanced Ceramics and Application: Program and the Book of Abstracts, May 10-11th, 2012, Belgrade, Serbia. 2012;:25-25.
https://hdl.handle.net/21.15107/rcub_machinery_6783 .

Pavlović, Vera P., Pavlović, Vladimir B., Blanuša, Jovan, Branković, Goran, Spreitzer, Matjaž, Krstić, Jugoslav B., "Structural Changes, Dielectric and Ferroelectric Properties of Tribophysically Activated BaTiO3" in Serbian Ceramic Society Conference - Advanced Ceramics and Application: Program and the Book of Abstracts, May 10-11th, 2012, Belgrade, Serbia (2012):25-25,
https://hdl.handle.net/21.15107/rcub_machinery_6783 .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Nikolić, Maria Vesna
AU  - Nikolić, Zoran
AU  - Branković, Goran
AU  - Živković, Ljiljana
AU  - Pavlović, Vladimir B.
AU  - Ristić, Momčilo M.
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/691
AB  - Ceramic materials with a perovskite related structures such as non-doped and doped barium titanate ceramics are attracting much interest for their application as capacitor dielectrics, resistors, thermal sensors, etc. Since mechanical activation can be used in order to modify properties of these materials, in this study microstructure evolution and electric properties of mechanically activated BaTiO3 have been analyzed. The sintering process of high purity non-doped mechanically activated BaTiO3 was monitored using a sensitive dilatometer with a heating rate of 10 degrees C/min. Investigation of the microstructure evolution of mechanically activated BaTiO3 was performed using scanning electron microscope (SEM) and digital pattern recognition (DPR) methods. A dielectric study of the paraelectric-ferroelectric phase transition in the barium titanate ceramics was performed by recording the temperature dependence of dielectric permittivity.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of The European Ceramic Society
T1  - Microstructural evolution and electric properties of mechanically activated BaTiO3 ceramics
EP  - 579
IS  - 2-3
SP  - 575
VL  - 27
DO  - 10.1016/j.jeurceramsoc.2006.04.074
ER  - 

@article{
author = "Pavlović, Vera P. and Nikolić, Maria Vesna and Nikolić, Zoran and Branković, Goran and Živković, Ljiljana and Pavlović, Vladimir B. and Ristić, Momčilo M.",
year = "2007",
abstract = "Ceramic materials with a perovskite related structures such as non-doped and doped barium titanate ceramics are attracting much interest for their application as capacitor dielectrics, resistors, thermal sensors, etc. Since mechanical activation can be used in order to modify properties of these materials, in this study microstructure evolution and electric properties of mechanically activated BaTiO3 have been analyzed. The sintering process of high purity non-doped mechanically activated BaTiO3 was monitored using a sensitive dilatometer with a heating rate of 10 degrees C/min. Investigation of the microstructure evolution of mechanically activated BaTiO3 was performed using scanning electron microscope (SEM) and digital pattern recognition (DPR) methods. A dielectric study of the paraelectric-ferroelectric phase transition in the barium titanate ceramics was performed by recording the temperature dependence of dielectric permittivity.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of The European Ceramic Society",
title = "Microstructural evolution and electric properties of mechanically activated BaTiO3 ceramics",
pages = "579-575",
number = "2-3",
volume = "27",
doi = "10.1016/j.jeurceramsoc.2006.04.074"
}

Pavlović, V. P., Nikolić, M. V., Nikolić, Z., Branković, G., Živković, L., Pavlović, V. B.,& Ristić, M. M.. (2007). Microstructural evolution and electric properties of mechanically activated BaTiO3 ceramics. in Journal of The European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(2-3), 575-579.
https://doi.org/10.1016/j.jeurceramsoc.2006.04.074

Pavlović VP, Nikolić MV, Nikolić Z, Branković G, Živković L, Pavlović VB, Ristić MM. Microstructural evolution and electric properties of mechanically activated BaTiO3 ceramics. in Journal of The European Ceramic Society. 2007;27(2-3):575-579.
doi:10.1016/j.jeurceramsoc.2006.04.074 .

Pavlović, Vera P., Nikolić, Maria Vesna, Nikolić, Zoran, Branković, Goran, Živković, Ljiljana, Pavlović, Vladimir B., Ristić, Momčilo M., "Microstructural evolution and electric properties of mechanically activated BaTiO3 ceramics" in Journal of The European Ceramic Society, 27, no. 2-3 (2007):575-579,
https://doi.org/10.1016/j.jeurceramsoc.2006.04.074 . .