Growth of Selected Cross-Contaminating Bacterial Pathogens on Beef and Fish at 15 and 35°C
Abstract:Isolates of Escherichia coli and Clostridium perfringens from beef and Aeromonas hydrophila from fish were examined for their ability to survive and grow as cross-contaminates on nonnative tissues at simulated ambient (35°C) and aging/conditioning (l5°C) temperatures of handling and retailing found in the tropics. Growth of all isolates over a 10-h period was greater (P < 0.05) on their native tissues at both temperatures. The aging/conditioning temperature effectively limited growth of E. coli and A. hydrophila to less than 1-log10 CFU/g and prevented growth of C. perfringens on beef and fish samples. All three isolates demonstrated characteristic mesophilic growth response on both tissues at 35°C during the 10-h retail period. The study suggests that two muscle food products could be jointly handled to efficiently use available storage/haulage capacity in tropical countries. Potential savings in space, labor and energy would be made if cross-contamination between the two products is minimized by available packaging and sanitizing technologies.
Document Type: Research Article
Affiliations: 1: Food Microbiology Laboratory, Department of Applied Biochemistry and Food Science, School of Agriculture, University of Nottingham, Sutton-Bonington, Loughborough, Leics. LE12 5RD, United Kingdom 2: Department of Animal Science, Louisiana Agicultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803 3: Department of Food Science, Louisiana Agicultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803
Publication date: April 1, 1994
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