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Preparation and antimicrobial characterization of silver-containing packaging materials for meat

Paper ID Volume ID Publish Year Pages File Format Full-Text
19800 43130 2015 8 PDF Available
Title
Preparation and antimicrobial characterization of silver-containing packaging materials for meat
Abstract

•Silver-containing packaging films against bacteria in vitro and in situ meat.•Differences in susceptibility to nanoscale silver between different bacteria.•Nanoscale silver affected most bacteria in vitro although not in situ.

In food technology, antimicrobial packaging materials could inhibit or limit the growth of spoilage bacteria and thus improve the shelf life of packaged products. The present study provides new insights into the preparation and antimicrobial characterization of silver-containing packaging materials and their efficacy against typical meat spoilage bacteria. Antimicrobial efficacy of packaging films produced by coextrusion or liquid flame spray process was determined by bioluminescence imaging and conventional antimicrobial assay. Fresh pork sirloin was packaged in selected films and composition of meat microbiota was analyzed by 16S rRNA amplicon sequencing. Shelf life of meat was not affected by any of the silver-containing packaging films, even though meat microbiota mostly consisted of bacteria that were inhibited or retarded in vitro by nanoscale silver coating. This may be due to different release dynamics of silver ions on meat surfaces compared to the circumstances in the antimicrobial assay or interactions between silver and amino acids.

Keywords
Active packaging; Antimicrobial film; Bioluminescence; Lactic acid bacteria; Liquid flame spray; Silver nanoparticle
First Page Preview
Preparation and antimicrobial characterization of silver-containing packaging materials for meat
Publisher
Database: Elsevier - ScienceDirect
Journal: Food Packaging and Shelf Life - Volume 6, December 2015, Pages 53–60
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering