Document Detail


Quantification and variability analysis of bacterial cross-contamination rates in common food service tasks.
MedLine Citation:
PMID:  11198444     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Y Chen; K M Jackson; F P Chea; D W Schaffner
Related Documents :
21708754 - Stress, neuropeptides, and feeding behavior: a comparative perspective.
1119854 - Utensil swab test: its effectiveness in food service sanitation programs.
16101854 - Nutritional care of danish medical inpatients--patients' perspectives.
21647444 - Patterns of gps tracks suggest nocturnal foraging by incubating peruvian pelicans (pele...
11249784 - Reliability of nitrogen dioxide passive diffusion tubes for ambient measurement: in sit...
22173484 - Prey availability affects daily torpor by free-ranging australian owlet-nightjars (aego...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food protection     Volume:  64     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2001 Jan 
Date Detail:
Created Date:  2001-01-24     Completed Date:  2001-10-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  72-80     Citation Subset:  IM    
Affiliation:
Food Risk Analysis Initiative, Rutgers-the State University of New Jersey, New Brunswick 08901-8520, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
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


Previous Document:  Development of a multiple-step process for the microbial decontamination of beef trim.
Next Document:  The effects of cultivating lactic starter cultures with bacteriocin-producing lactic acid bacteria.