In situ synthesis of silver nanoparticles in pectin matrix using gamma irradiation for the preparation of antibacterial pectin/silver nanoparticles composite films

被引：40
|
作者：
Ardjoum, Nadjat [1 ,2 ]
Shankar, Shiv [1 ]
Chibani, Nacera [2 ]
Salmieri, Stephane [1 ]
Lacroix, Monique [1 ]
机构：
[1] Inst Nutr & Funct Foods, Hlth & Biotechnol Ctr, INRS Armand Frappier, Res Labs Sci,Appl Food,Canadian Irradiat Ctr, 531 Blvd Prairies, Laval, PQ H7V 1B7, Canada
[2] Univ Bejaia, Fac Technol, Dept Genie Proc, Lab Mat Polymeres Avances LMPA, Route Targa Ouzemour, Bejaia 06000, Algeria
来源：
FOOD HYDROCOLLOIDS | 2021年 / 121卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Pectin; Nanocomposite films; Silver nanoparticles; Gamma irradiation; Antibacterial activity; EDIBLE FILMS; POLYMER; IONS;
D O I：
10.1016/j.foodhyd.2021.107000
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The present study reports in situ synthesis of silver nanoparticles (AgNPs) in pectin matrix using gamma-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 gamma-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 gamma-irradiation have a potential to increase the shelf life of packaged food.
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页数：9
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