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Application of acidic calcium sulfate and e-polylysine to pre-rigor beef rounds for reduction of pathogens

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This study evaluated the effectiveness of warm solutions of acidic calcium sulfate (ACS), lactic acid (LA), e-polylysine (EPL), ACS plus EPL and sterile distilled water (W) applied to the surface of fresh, pre-rigor beef rounds for reducing Salmonella Typhimurium, Escherichia coli O157:H7 and Listeria monocytogenes applied as a cocktail at a level of 6.4 log cfu/ 50 cm2. All treatments were applied for 15 to 20 s using a stainless steel spray cabinet at 50–55C under a constant pressure. Sequential application of warmACS, followed by EPL significantly reduced inoculated levels of S. Typhimurium, E. coli O157:H7 and L. monocytogenes,with an extended effect over seven storage days. This combination was more effective than single treatments of ACS, LA, EPL orWalone. From these results, it appears that a sequential application ofACS and EPL could be a better strategy for pathogen reduction in meat plants than a single decontamination treatment.
Robin C Anderson
Escherichia coli O157 , Listeria monocytogenes , Salmonella typhimurium , antimicrobial agents , beef , beef carcasses , calcium sulfate , decontamination , lactic acid , mechanism of action , pathogens , slaughter , stainless steel
Journal of food safety 2011 v.31
Journal Articles, USDA Authors, Peer-Reviewed
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