TY  - JOUR
AU  - Radović, Marko N.
AU  - Adamović, Tijana
AU  - Pavlović, Jelena
AU  - Rusmirović, Jelena
AU  - Tadić, Vanja
AU  - Branković, Zorica
AU  - Ivanović, Jasna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4232
AB  - Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing dove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 degrees C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt. %, scCO(2) pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch(50:50)) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/g(film)) without an adverse effect on morphological properties. The G/Ch(50:50) film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch(50:50) and its interaction with the film. Plasticizing effect of scCO(2) and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/g(film) into the G/Ch(50:50) didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 degrees C, which is suitable for most of food packaging applications.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof
EP  - 130
IS  - 2
SP  - 119
VL  - 25
DO  - 10.2298/CICEQ180323025R
ER  - 

@article{
author = "Radović, Marko N. and Adamović, Tijana and Pavlović, Jelena and Rusmirović, Jelena and Tadić, Vanja and Branković, Zorica and Ivanović, Jasna",
year = "2019",
abstract = "Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing dove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 degrees C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt. %, scCO(2) pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch(50:50)) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/g(film)) without an adverse effect on morphological properties. The G/Ch(50:50) film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch(50:50) and its interaction with the film. Plasticizing effect of scCO(2) and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/g(film) into the G/Ch(50:50) didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 degrees C, which is suitable for most of food packaging applications.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof",
pages = "130-119",
number = "2",
volume = "25",
doi = "10.2298/CICEQ180323025R"
}

Radović, M. N., Adamović, T., Pavlović, J., Rusmirović, J., Tadić, V., Branković, Z.,& Ivanović, J.. (2019). Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 25(2), 119-130.
https://doi.org/10.2298/CICEQ180323025R

Radović MN, Adamović T, Pavlović J, Rusmirović J, Tadić V, Branković Z, Ivanović J. Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof. in Chemical Industry & Chemical Engineering Quarterly. 2019;25(2):119-130.
doi:10.2298/CICEQ180323025R .

Radović, Marko N., Adamović, Tijana, Pavlović, Jelena, Rusmirović, Jelena, Tadić, Vanja, Branković, Zorica, Ivanović, Jasna, "Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof" in Chemical Industry & Chemical Engineering Quarterly, 25, no. 2 (2019):119-130,
https://doi.org/10.2298/CICEQ180323025R . .

TY  - JOUR
AU  - Pavićević, Vladimir
AU  - Radović, Marko N.
AU  - Milojević, Svetomir
AU  - Marković, Miljana S.
AU  - Ristić, Mihailo S.
AU  - Povrenović, Dragan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3739
AB  - Essential oils are aromatic, volatile, complex mixtures of various compounds, mainly hydrocarbons (monoterpene and sesquiterpene) and some oxygenated hydrocarbons. Juniper berry essential oil has wide application and high commercial value due to its considerable antimicrobial activities. It is used in medicine, food, cosmetic and pharmaceutical industry and veterinary medicine. Generally, it is obtained by hydrodistillation, technique for the extraction of substances which do not mix or mix very poorly with water and are unstable at their boiling temperatures. It provides high quality of essential oil and also represents a relatively simple, safe and environmentally friendly process. The variations in the chemical composition of the essential oil obtained from juniper berries at various distillation rates (3, 6 and 8 ml/min) and various mass ratio juniper berries-water (hydromodules -1:3, 1: 4 and 1: 5) are presented in this paper. It is important to emphasize that the variations made influence only in quantitative (mass%), but not in qualitative chemical composition (no differences, same 58 components were detected in all experiments). To reflect those effects, only 23 identified components with the content higher than 0.5 mass% were selected, constituted 95-96 mass% of the essential oils. The major constituents of the essential oils were monoterpenes (67.39-71.00 mass%), followed by sesquiterpenes (21.64-24.54 mass%), while the oxygenated monoterpene (1.54-2.42 mas.%) and oxygenated sesquiterpenes (0.89-1.46 mass%) were much less present. According to volatility, the high volatile (boiling point 153-167 degrees C) components are the main constituents of the essential oils (61.69-63.81 mass%), followed by the low volatile (boiling point 252-288 degrees C) components (22.57-26.04 mass%), and the least present medium volatile (boiling point 173-212 degrees C) components (7.24-9.61 mass%). The variations in the mass content of the essential oil at various distillation rates showed clear general trends for all hydromodules (with exceptions at some components). With the increasing of distillation rate, mass% of high and medium volatile components decreased, while mass% of low volatile components increased. This is caused by higher extraction of low volatile components at high distillation rate, which resulted the increasing of their mass%. The variations in the mass composition of the essential oil at various hydromodules showed less expressive trends for all distillation rates. That means it has much less influence on the mass composition than the variation of distillation rate. Therefore, experiments at various distillation rates should be continued in combination with the fractionation of the essential oil by simultaneous hydrodistillation and rectification, including the effects of preparation procedures of juniper berries and defining of optimal energy consumption, i.e., optimal time period of hydrodistillation.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Influence of hydrodistillation rate and hydromodule on chemical composition of juniperus communis l. Essential oil
EP  - 10
IS  - 1
SP  - 1
VL  - 71
DO  - 10.2298/HEMIND151119011P
ER  - 

@article{
author = "Pavićević, Vladimir and Radović, Marko N. and Milojević, Svetomir and Marković, Miljana S. and Ristić, Mihailo S. and Povrenović, Dragan",
year = "2017",
abstract = "Essential oils are aromatic, volatile, complex mixtures of various compounds, mainly hydrocarbons (monoterpene and sesquiterpene) and some oxygenated hydrocarbons. Juniper berry essential oil has wide application and high commercial value due to its considerable antimicrobial activities. It is used in medicine, food, cosmetic and pharmaceutical industry and veterinary medicine. Generally, it is obtained by hydrodistillation, technique for the extraction of substances which do not mix or mix very poorly with water and are unstable at their boiling temperatures. It provides high quality of essential oil and also represents a relatively simple, safe and environmentally friendly process. The variations in the chemical composition of the essential oil obtained from juniper berries at various distillation rates (3, 6 and 8 ml/min) and various mass ratio juniper berries-water (hydromodules -1:3, 1: 4 and 1: 5) are presented in this paper. It is important to emphasize that the variations made influence only in quantitative (mass%), but not in qualitative chemical composition (no differences, same 58 components were detected in all experiments). To reflect those effects, only 23 identified components with the content higher than 0.5 mass% were selected, constituted 95-96 mass% of the essential oils. The major constituents of the essential oils were monoterpenes (67.39-71.00 mass%), followed by sesquiterpenes (21.64-24.54 mass%), while the oxygenated monoterpene (1.54-2.42 mas.%) and oxygenated sesquiterpenes (0.89-1.46 mass%) were much less present. According to volatility, the high volatile (boiling point 153-167 degrees C) components are the main constituents of the essential oils (61.69-63.81 mass%), followed by the low volatile (boiling point 252-288 degrees C) components (22.57-26.04 mass%), and the least present medium volatile (boiling point 173-212 degrees C) components (7.24-9.61 mass%). The variations in the mass content of the essential oil at various distillation rates showed clear general trends for all hydromodules (with exceptions at some components). With the increasing of distillation rate, mass% of high and medium volatile components decreased, while mass% of low volatile components increased. This is caused by higher extraction of low volatile components at high distillation rate, which resulted the increasing of their mass%. The variations in the mass composition of the essential oil at various hydromodules showed less expressive trends for all distillation rates. That means it has much less influence on the mass composition than the variation of distillation rate. Therefore, experiments at various distillation rates should be continued in combination with the fractionation of the essential oil by simultaneous hydrodistillation and rectification, including the effects of preparation procedures of juniper berries and defining of optimal energy consumption, i.e., optimal time period of hydrodistillation.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Influence of hydrodistillation rate and hydromodule on chemical composition of juniperus communis l. Essential oil",
pages = "10-1",
number = "1",
volume = "71",
doi = "10.2298/HEMIND151119011P"
}

Pavićević, V., Radović, M. N., Milojević, S., Marković, M. S., Ristić, M. S.,& Povrenović, D.. (2017). Influence of hydrodistillation rate and hydromodule on chemical composition of juniperus communis l. Essential oil. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 71(1), 1-10.
https://doi.org/10.2298/HEMIND151119011P

Pavićević V, Radović MN, Milojević S, Marković MS, Ristić MS, Povrenović D. Influence of hydrodistillation rate and hydromodule on chemical composition of juniperus communis l. Essential oil. in Hemijska industrija. 2017;71(1):1-10.
doi:10.2298/HEMIND151119011P .

Pavićević, Vladimir, Radović, Marko N., Milojević, Svetomir, Marković, Miljana S., Ristić, Mihailo S., Povrenović, Dragan, "Influence of hydrodistillation rate and hydromodule on chemical composition of juniperus communis l. Essential oil" in Hemijska industrija, 71, no. 1 (2017):1-10,
https://doi.org/10.2298/HEMIND151119011P . .