Novel multifunctional composite poly(lactic acid) (PLA) films with alginate microbeads containing silver nanoparticles (AgNPs) were developed for potential antimicrobial food packaging applications. AgNPs, 10-20 nm in size, were synthesized in a Na-alginate solution by a hydrothermal method yielding a sterile, pH neutral colloid solution of low viscosity that was electrostatically extruded to produce Ag/alginate microbeads (190 mu m in size) with retained AgNPs. Dried microbeads were uniformly dispersed in PLA films with retained AgNPs as confirmed by UV-Vis spectroscopy and scanning electron microscopy. The films were characterized regarding thermal and mechanical properties as well as silver release in different food simulants. Results show that PLA matrix served as a diffusion barrier so that the released silver concentration in water after 10 days was within the prescribed limit of 0.05 mg kg(-1) while the films induced inhibitory effects against Staphylococcus aureus in the agar d...iffusion test.
TY - JOUR
AU - Kostić, Danijela
AU - Vukašinović-Sekulić, Maja
AU - Armentano, Ilaria
AU - Torres, Luigi
AU - Obradović, Bojana
PY - 2019
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4161
AB - Novel multifunctional composite poly(lactic acid) (PLA) films with alginate microbeads containing silver nanoparticles (AgNPs) were developed for potential antimicrobial food packaging applications. AgNPs, 10-20 nm in size, were synthesized in a Na-alginate solution by a hydrothermal method yielding a sterile, pH neutral colloid solution of low viscosity that was electrostatically extruded to produce Ag/alginate microbeads (190 mu m in size) with retained AgNPs. Dried microbeads were uniformly dispersed in PLA films with retained AgNPs as confirmed by UV-Vis spectroscopy and scanning electron microscopy. The films were characterized regarding thermal and mechanical properties as well as silver release in different food simulants. Results show that PLA matrix served as a diffusion barrier so that the released silver concentration in water after 10 days was within the prescribed limit of 0.05 mg kg(-1) while the films induced inhibitory effects against Staphylococcus aureus in the agar diffusion test.
PB - Elsevier Science Bv, Amsterdam
T2 - Materials Science & Engineering C-Materials for Biological Applications
T1 - Multifunctional ternary composite films based on PLA and Ag/alginate microbeads: Physical characterization and silver release kinetics
EP - 1168
SP - 1159
VL - 98
DO - 10.1016/j.msec.2019.01.074
ER -
@article{
author = "Kostić, Danijela and Vukašinović-Sekulić, Maja and Armentano, Ilaria and Torres, Luigi and Obradović, Bojana",
year = "2019",
abstract = "Novel multifunctional composite poly(lactic acid) (PLA) films with alginate microbeads containing silver nanoparticles (AgNPs) were developed for potential antimicrobial food packaging applications. AgNPs, 10-20 nm in size, were synthesized in a Na-alginate solution by a hydrothermal method yielding a sterile, pH neutral colloid solution of low viscosity that was electrostatically extruded to produce Ag/alginate microbeads (190 mu m in size) with retained AgNPs. Dried microbeads were uniformly dispersed in PLA films with retained AgNPs as confirmed by UV-Vis spectroscopy and scanning electron microscopy. The films were characterized regarding thermal and mechanical properties as well as silver release in different food simulants. Results show that PLA matrix served as a diffusion barrier so that the released silver concentration in water after 10 days was within the prescribed limit of 0.05 mg kg(-1) while the films induced inhibitory effects against Staphylococcus aureus in the agar diffusion test.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Multifunctional ternary composite films based on PLA and Ag/alginate microbeads: Physical characterization and silver release kinetics",
pages = "1168-1159",
volume = "98",
doi = "10.1016/j.msec.2019.01.074"
}
Kostić, D., Vukašinović-Sekulić, M., Armentano, I., Torres, L.,& Obradović, B.. (2019). Multifunctional ternary composite films based on PLA and Ag/alginate microbeads: Physical characterization and silver release kinetics. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier Science Bv, Amsterdam., 98, 1159-1168.
https://doi.org/10.1016/j.msec.2019.01.074
Kostić D, Vukašinović-Sekulić M, Armentano I, Torres L, Obradović B. Multifunctional ternary composite films based on PLA and Ag/alginate microbeads: Physical characterization and silver release kinetics. in Materials Science & Engineering C-Materials for Biological Applications. 2019;98:1159-1168.
doi:10.1016/j.msec.2019.01.074 .
Kostić, Danijela, Vukašinović-Sekulić, Maja, Armentano, Ilaria, Torres, Luigi, Obradović, Bojana, "Multifunctional ternary composite films based on PLA and Ag/alginate microbeads: Physical characterization and silver release kinetics" in Materials Science & Engineering C-Materials for Biological Applications, 98 (2019):1159-1168,
https://doi.org/10.1016/j.msec.2019.01.074 . .
