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Green Silver Nanoparticles Embedded in Cellulosic Network for Fresh Food Packaging

Authors :
S. Chaitanya Kumari
P. Naga Padma
K. Anuradha
Source :
Journal of Pure and Applied Microbiology, Vol 15, Iss 3, Pp 1236-1244 (2021)
Publication Year :
2021
Publisher :
Journal of Pure and Applied Microbiology, 2021.

Abstract

The demand for increasing the shelf life of fresh food as well as the need for protecting the food against foodborne infections warrant the demand for increasing the shelf life of fresh food. The incorporation of nanoparticles into the packaging material can enhance the preservation of perishable foods. Silver nanoparticles (AgNPs), in particular, have antibacterial, anti-mold, anti-yeast, and anti-viral activities can be embedded into the biodegradable packaging materials for this purpose. This study focuses on antimicrobial packaging materials for food by mixing the extracts of different plants with silver nitrate and depositing this mixture as a layer on the blotting papers, which are thick sheets of paper made of cellulose. Because the blotting papers are highly absorbent and porous, silver nitrate solution along with the plant extracts can be easily applied and allowed for in situ synthesis of AgNPs. Subsequently, these papers were analyzed and characterized using scanning electron microscopy, transmission electron microscopy, atomic absorption spectroscopy, and energy dispersive X-ray analysis. The coated paper exhibited good antibacterial activity against Escherichia coli and Staphylococcus aureus. Furthermore, the coated paper when used as a packaging material for tomatoes and coriander leaf, the shelf life was extended to about 30 days and 15 days respectively. The prepared cost-effective silver packing material can be used in food packaging for various perishable foods.

Details

Language :
English
ISSN :
09737510 and 2581690X
Volume :
15
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Journal of Pure and Applied Microbiology
Publication Type :
Academic Journal
Accession number :
edsdoj.08c19020ea6f414e8fb6217763b1706d
Document Type :
article
Full Text :
https://doi.org/10.22207/JPAM.15.3.13