Document Detail

Assessing the cross contamination and transfer rates of Salmonella enterica from chicken to lettuce under different food-handling scenarios.
MedLine Citation:
PMID:  20630321     Owner:  NLM     Status:  MEDLINE    
Cross contamination of foodborne pathogens from raw meats to ready-to-eat foods has caused a number of foodborne outbreaks. The cross contamination and transfer rates of Salmonella enterica from chicken to lettuce under various food-handling scenarios were determined. The following scenarios were tested: in scenario 1, cutting board and knife used to cut chicken (10(6) CFU/g) were also used for cutting lettuce, without washing; in scenario 2, cutting board and knife were washed with water separately after cutting chicken, and subsequently used for cutting lettuce; and in scenario 3, cutting board and knife were thoroughly washed with soap and hot water after cutting chicken, and before cutting lettuce. In each scenario, cutting board, knife, chicken and lettuce were sampled for population of S. enterica. For scenario 1, both before and after cutting lettuce, the cutting board and knife each had about 2 logs CFU/cm(2) of S. enterica, respectively. The cut lettuce had about 3 logs CFU/g of S. enterica. In scenario 2, fewer organisms (0.5-2.4 logs CFU/g or cm(2)) were transferred. The transfer rates in both scenarios ranged from 0.02 to 75%. However, in scenario 3, <1 log CFU/g or cm(2) organisms were detected on lettuce, cutting board or knife, after washing and cutting lettuce. This shows that the FDA recommended practice for cleaning cutting boards is effective in removing S. enterica and preventing cross contamination.
Sadhana Ravishankar; Libin Zhu; Divya Jaroni
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-27
Journal Detail:
Title:  Food microbiology     Volume:  27     ISSN:  1095-9998     ISO Abbreviation:  Food Microbiol.     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-07-15     Completed Date:  2010-10-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8601127     Medline TA:  Food Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  791-4     Citation Subset:  IM    
Copyright Information:
Copyright 2010 Elsevier Ltd. All rights reserved.
Dept. of Veterinary Science and Microbiology, University of Arizona, 1117 E. Lowell Street, Tucson, AZ 85721, USA.
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MeSH Terms
Chickens / microbiology*
Disinfectants / pharmacology*
Equipment Contamination
Food Contamination / analysis*
Food Handling / methods*
Food Microbiology
Lettuce / microbiology*
Salmonella Food Poisoning / prevention & control
Salmonella enterica / drug effects,  isolation & purification*
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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