In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO(2)) as a solvent. Experiments were performed at 35 degrees C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4-24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15-60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7-27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol rel...ease kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).
TY - JOUR
AU - Pajnik, Jelena
AU - Lukić, Ivana
AU - Dikić, Jelena
AU - Ašanin, Jelena
AU - Gordić, Milan V.
AU - Mišić, Dušan
AU - Žižović, Irena
AU - Korzeniowska, Malgorzata
PY - 2020
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4442
AB - In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO(2)) as a solvent. Experiments were performed at 35 degrees C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4-24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15-60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7-27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).
PB - MDPI, Basel
T2 - Molecules
T1 - Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties
IS - 20
VL - 25
DO - 10.3390/molecules25204717
ER -
@article{
author = "Pajnik, Jelena and Lukić, Ivana and Dikić, Jelena and Ašanin, Jelena and Gordić, Milan V. and Mišić, Dušan and Žižović, Irena and Korzeniowska, Malgorzata",
year = "2020",
abstract = "In the present study, supercritical solvent impregnation (SSI) has been applied to incorporate thymol into bio-composite polymers as a potential active packaging material. Thymol, a natural component with a proven antimicrobial activity, was successfully impregnated into starch-chitosan (SC) and starch-chitosan-zeolite (SCZ) films using supercritical carbon dioxide (scCO(2)) as a solvent. Experiments were performed at 35 degrees C, pressures of 15.5 and 30 MPa, and an impregnation time in the range of 4-24 h. The highest impregnation yields of SC films with starch to chitosan mass ratios of 1:1 and 1:2 were 10.80% and 6.48%, respectively. The addition of natural zeolite (15-60%) significantly increased the loading capacity of films enabling thymol incorporation in a quantity of 16.7-27.3%. FTIR and SEM analyses were applied for the characterization of the films. Mechanical properties and water vapor permeability of films before and after the impregnation were tested as well. Thymol release kinetics in deionized water was followed and modeled by the Korsmeyer-Peppas and Weibull model. SCZ films with thymol loading of approximately 24% exhibited strong antibacterial activity against E. coli and methicillin-resistant Staphylococcus (S.) aureus (MRSA).",
publisher = "MDPI, Basel",
journal = "Molecules",
title = "Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties",
number = "20",
volume = "25",
doi = "10.3390/molecules25204717"
}
Pajnik, J., Lukić, I., Dikić, J., Ašanin, J., Gordić, M. V., Mišić, D., Žižović, I.,& Korzeniowska, M.. (2020). Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties. in Molecules
MDPI, Basel., 25(20).
https://doi.org/10.3390/molecules25204717
Pajnik J, Lukić I, Dikić J, Ašanin J, Gordić MV, Mišić D, Žižović I, Korzeniowska M. Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties. in Molecules. 2020;25(20).
doi:10.3390/molecules25204717 .
Pajnik, Jelena, Lukić, Ivana, Dikić, Jelena, Ašanin, Jelena, Gordić, Milan V., Mišić, Dušan, Žižović, Irena, Korzeniowska, Malgorzata, "Application of Supercritical Solvent Impregnation for Production of Zeolite Modified Starch-Chitosan Polymers with Antibacterial Properties" in Molecules, 25, no. 20 (2020),
https://doi.org/10.3390/molecules25204717 . .
