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Interventions to Reduce Microbiological Contamination of Beef Variety Meats

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Hot water and solutions of acetic acid, lactic acid, or trisodium phosphate applied by immersion or spraying, chlorine solution applied by immersion, and exposure to steam in a pasteurization system, in a cabinet, or in combination with vacuum were evaluated for their effectiveness in reducing levels of bacterial contamination on samples of beef cheek meat, large intestine, lips, liver, oxtail, and tongue. Treated samples (five per treatment) and controls were analyzed for aerobic plate counts (APCs) on tryptic soy agar and for total coliform counts (TCCs) and Escherichia coli counts (ECCs) on Petrifilm. Acetic acid (2%) immersion and trisodium phosphate (12%) spraying and immersion for 10 s were among the most effective treatments in 16, 15, and 14, respectively, of 18 comparisons for reducing APCs, TCCs, and ECCs on four or more of the six variety meats tested. Acetic acid (2%) spraying, lactic acid (2%) immersion, and hot water (78 to 80°C) spraying for 10 s were among the most effective treatments for reducing APCs, TCCs, and ECCs on four or more of the six variety meats. Chlorine (0.005%) immersion and steam were among the least effective treatments for reducing APCs, TCCs, and ECCs on variety meats. The results indicated that interventions applied to decontaminate beef carcasses can also be considered for decontamination of variety meats.

Document Type: Research Article

Affiliations: 1: Clougherty Packing Company, Los Angeles, California 90058-0870, USA 2: Center for Red Meat Safety, Department of Animal Sciences, Colorado State University, Fort Collins, Colorado 80523-1171, USA 3: U.S. Meat Export Federation, Denver, Colorado 80265, USA

Publication date: January 1, 2000

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    The Journal of Food Protection (JFP) is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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