Journal
MEAT SCIENCE
Volume 88, Issue 2, Pages 256-260Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2010.12.032
Keywords
Meat; Bacteria; Organic acids; Pathogen reduction; Food safety
Categories
Funding
- American Meat Institute Foundation
- Utah Agricultural Experiment Station
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We compared spray washing at 55.4 degrees C with 2% levulinic acid to that with lactic or acetic acid for decontamination of pathogenic bacteria inoculated onto meat surfaces, and their residual protection against later growth of pathogenic bacteria. The model systems included Escherichia coli O157:H7 on beef plate, Salmonella on chicken skin and pork belly, and Listeria monocytogenes on turkey roll. In the decontamination studies, acid washes lowered recoverable numbers of pathogens by 0.6 to 1 log/cm(2) as compared to no-wash controls, and only lactic acid lowered the number of pathogens recovered as compared to the water wash. Washing with levulinic acid at 68.3 or 76.7 degrees C did not result in additional decontamination of E. coli. Acetic acid prevented residual growth of E. coli and L monocytogenes, and it reduced numbers of Salmonella on chicken skin to below recoverable levels. Overall, levulinic acid did not provide as effective decontamination as lactic acid nor residual protection as acetic acid. (C) 2011 Elsevier Ltd. All rights reserved.
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