Ardjoum, Nadjat; Shankar, Shiv; Chibani, Nacera; Salmieri, Stéphane et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2021).
In situ synthesis of silver nanoparticles in pectin matrix using gamma irradiation for the preparation of antibacterial pectin/silver nanoparticles composite films
Food Hydrocolloids
, vol. 121
, nº 107000.
pp. 1-9.
DOI: 10.1016/j.foodhyd.2021.107000.
Résumé
The present study reports in situ synthesis of silver nanoparticles (AgNPs) in pectin matrix using γ-irradiation at 2.5 and 5 kGy and preparation of antibacterial pectin-based nanocomposite films. The FE-SEM micrographs showed that the neat pectin film was smooth but became a little rough after forming AgNPs in the pectin films. The UV–visible spectroscopy analysis exhibited a surface plasmon resonance (SPR) band about 430 nm confirming the formation of AgNPs in the pectin films. The Hunter color values of nanocomposite film changed after the formation of AgNPs. FTIR and thermogravemetric analysis results revealed no structural and thermal stability changes in the pectin films after the synthesis of AgNPs by γ-irradiation. However, mechanical properties and water vapor permeability of the composite films improved after AgNPs synthesis. The pectin-AgNPs nanocomposite films exhibited potent antibacterial activity against Escherichia coli and Salmonella Typhimurium. The developed antibacterial pectin-based nanocomposite films incorporated with AgNPs using γ-irradiation have a potential to increase the shelf life of packaged food.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Pectin; Nanocomposite Films; Silver Nanoparticles; Gamma Irradiation; Antibacterial Activity |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 22 juin 2022 19:08 |
| Dernière modification: | 22 juin 2022 19:08 |
| URI: | https://espace.inrs.ca/id/eprint/12283 |
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