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

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Article number67
Pages (from-to)53-60
Number of pages8
JournalFood Packaging and Shelf Life
Volume6
DOIs
Publication statusPublished - 1 Dec 2015
Publication typeA1 Journal article-refereed

Abstract

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

Publication forum classification

Field of science, Statistics Finland