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

L. Kuuliala, T. Pippuri, J. Hultman, S.-M. Auvinen, K. Kolppo, T. Nieminen, Matti Karp, J. Björkroth, J. Kuusipalo, E. Jääskeläinen

    Research output: Contribution to journalArticleScientificpeer-review

    17 Citations (Scopus)

    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.

    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

    Keywords

    • Active packaging
    • Antimicrobial film
    • Bioluminescence
    • Lactic acid bacteria
    • Liquid flame spray
    • Silver nanoparticle

    Publication forum classification

    • Publication forum level 0

    ASJC Scopus subject areas

    • Food Science
    • Safety, Risk, Reliability and Quality
    • Biomaterials
    • Polymers and Plastics
    • Microbiology (medical)

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