Document Detail


Efficacy of a commercial produce wash on bacterial contamination of lettuce in a food service setting.
MedLine Citation:
PMID:  14672238     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Many microorganisms (including a number of important foodborne pathogens) can be present on raw fruits and vegetables. Since these products are frequently eaten raw, any pathogens present represent a potential risk to the consumer. The objective of this study was to compare the efficacy of a commercial produce wash with that of water for reducing the total bacterial population on lettuce when used by food service employees in university dining halls. Because this study was carried out in actual food service facilities during their daily operation, we used indigenous produce microflora instead of actual pathogens. Over the course of the study, more than 40 heads of lettuce were divided into thirds, and each section was analyzed for total plate count either before washing, after washing in water, or after washing in Victory produce wash. When initial contamination levels were > or = 100 CFU/g (n = 36 samples), reductions obtained with Victory produce wash (1.8 log CFU/g) were significantly larger (P = 0.0006) than those obtained with water (0.8 log CFU/g). Our results indicate that Victory produce wash is effective in reducing indigenous flora on lettuce during food service preparation. Our results also show that care must be taken in the analysis of microbial reduction data: only a slight reduction in total plate count (ca. 0.1 log CFU/g) and no significant difference in reductions (P = 0.84) were observed when all samples (irrespective of initial contamination level) were compared.
Authors:
Sarah Smith; Mila Dunbar; Diana Tucker; Donald W Schaffner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food protection     Volume:  66     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-15     Completed Date:  2004-01-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2359-61     Citation Subset:  IM    
Affiliation:
Food Risk Analysis Initiative, Rutgers-The State University of New Jersey, 65 Dudley Road, New Brunswick, New Jersey 08901-8520, USA.
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MeSH Terms
Descriptor/Qualifier:
Bacteria / drug effects*,  growth & development
Colony Count, Microbial
Consumer Product Safety
Disinfectants / pharmacology*
Disinfection / methods*
Food Contamination / analysis*,  prevention & control
Food Microbiology
Food Services / standards*
Humans
Lettuce / microbiology*
Treatment Outcome
Chemical
Reg. No./Substance:
0/Disinfectants

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


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