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Prevalence and Concentration of Salmonella on Raw Shelled Peanuts in the United States

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Recalls and/or outbreaks associated with Salmonella contamination in peanut-containing products were reported over the past several years. There are very limited data available on the prevalence and concentration of Salmonella on raw shelled peanuts in the United States. The objectives of this study were to estimate the prevalence of Salmonella on raw shelled peanuts in the United States and to estimate that concentration of Salmonella. Samples of Runner- and Virginia-type raw shelled peanuts from the 2008, 2009, and 2010 crop years were proportionately sampled from each growing region, based on 2007 production volume. Of 944 raw shelled peanut samples (375 g each), 22 (2.33%) were positive for Salmonella by the VIDAS Salmonella assay. Salmonella serovars identified in this study included Agona, Anatum, Braenderup, Dessau, Hartford, Meleagridis, Muenchen, Rodepoort, Tennessee, and Tornow. The concentration levels of Salmonella in positive samples, as determined by a most-probable-number assay, were <0.03 to 2.4 MPN/g. These data will be useful when designing and validating processes for the reduction or elimination of Salmonella in peanuts and/or peanut-containing products.

Document Type: Research Article

DOI: http://dx.doi.org/10.4315/0362-028X.JFP-12-322

Affiliations: 1: American Peanut Council, 1500 King Street, Suite 301, Alexandria, Virginia 22314, USA. calhoste@bellsouth.net 2: Mars Chocolate North America, 800 High Street, Hackettstown, New Jersey 07840, USA 3: Land O'Lakes, 4001 Lexington Avenue North, Arden Hills, Minnesota 55112, USA 4: The Hershey Company, 1025 Reese Avenue, Hershey, Pennsylvania 17033, USA 5: Kraft Foods, 200 Deforest Avenue, East Hanover, New Jersey 07936, USA

Publication date: April 1, 2013

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    First published in 1937, the Journal of Food Protection®, 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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