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  • Title: Characterization of a potentially novel 'blown pack' spoilage bacterium isolated from bovine hide.
    Author: Moschonas G, Bolton DJ.
    Journal: J Appl Microbiol; 2013 Mar; 114(3):771-7. PubMed ID: 23163427.
    Abstract:
    AIMS: To characterize a psychrotrophic bacterium, designated TC1, previously isolated from a cattle hide in Ireland, and to investigate the ability of this strain to cause 'blown pack' spoilage (BPS) of vacuum-packaged beef primals. METHODS AND RESULTS: TC1 was characterized using a combination of phenotypic, chemotaxonomic and genotypic analyses and was assessed for its ability to spoil vacuum-packaged beef at refrigerated temperatures. TC1 was Gram-positive and formed elliptical subterminal endospores. The strain was able to grow between 0 and 33 °C, with optimal growth between 23 and 24 °C. TC1 could be differentiated from its phylogenetically closest neighbour (Clostridium lituseburense DSM 797(T)) by 16S rRNA gene sequencing, pulsed-field gel electrophoresis and cellular fatty acid composition. TC1 spoiled (BPS) beef within 42 days when inoculated in cold-stored (1 °C) vacuum-packed beef. CONCLUSIONS: The phenotypic, chemotaxonomic and genotypic characterization indicated that TC1 may represent a potentially novel, cold-tolerant, gas-producing bacterium of considerable economic significance to the beef industry. SIGNIFICANCE AND IMPACT OF THE STUDY: This study reports and characterizes an emerging BPS bacterium, which should be considered in future activities designed to minimize the psychrophilic and psychrotrophic spoilage of vacuum-packaged beef.
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