| Quantification and variability analysis of bacterial cross-contamination rates in common food service tasks. | |
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MedLine Citation:
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PMID: 11198444 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study investigated bacterial transfer rates between hands and other common surfaces involved in food preparation in the kitchen. Nalidixic acid-resistant Enterobacter aerogenes B199A was used as a surrogate microorganism to follow the cross-contamination events. Samples from at least 30 different participants were collected to determine the statistical distribution of each cross-contamination rate and to quantify the natural variability associated with that rate. The transfer rates among hands, foods, and kitchen surfaces were highly variable, being as low as 0.0005% and as high as 100%. A normal distribution was used to describe the variability in the logarithm of the transfer rates. The mean +/- SD of the normal distributions were, in log percent transfer rate, chicken to hand (0.94 +/- 0.68), cutting board to lettuce (0.90 +/- 0.59), spigot to hand (0.36 +/- 0.90), hand to lettuce (-0.12 +/- 1.07), prewashed hand to postwashed hand (i.e., hand washing efficiency) (-0.20 +/- 1.42), and hand to spigot (-0.80 +/- 1.09). Quantifying the cross-contamination risk associated with various steps in the food preparation process can provide a scientific basis for risk management efforts in both home and food service kitchens. |
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Authors:
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Y Chen; K M Jackson; F P Chea; D W Schaffner |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of food protection Volume: 64 ISSN: 0362-028X ISO Abbreviation: J. Food Prot. Publication Date: 2001 Jan |
Date Detail:
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Created Date: 2001-01-24 Completed Date: 2001-10-04 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7703944 Medline TA: J Food Prot Country: United States |
Other Details:
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Languages: eng Pagination: 72-80 Citation Subset: IM |
Affiliation:
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Food Risk Analysis Initiative, Rutgers-the State University of New Jersey, New Brunswick 08901-8520, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Chickens Colony Count, Microbial Enterobacter aerogenes* Evaluation Studies as Topic Female Food Contamination* / prevention & control Food Handling* Food Microbiology* Hand / microbiology Humans Kinetics Lettuce / microbiology Male Meat / microbiology Risk Management Statistical Distributions |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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