Document Detail

Association of Yersinia enterocolitica with the manufacture of cheese and occurrence in pasteurized milk.
MedLine Citation:
PMID:  211937     Owner:  NLM     Status:  MEDLINE    
Raw milk in southern Ontario frequently contains Yersinia enterocolitica. The potential for transmission of this organism by cheese manufactured from unpasteurized milk was evaluated by examination of milk and cheese curd samples from cheese manufacturing plants and finished cheddar and Italian cheeses. The incidence of Y. enterocolitica was lower in cheese curd samples (9.2%) than in raw milk (18.2%). Most of the curd samples showed a positive phosphatase test, indicating production from raw milk. One curd sample yielded Y. enterocolitica after 4 weeks of storage at 4 degrees C but was negative after 8 weeks. All samples of cheddar and Italian cheeses, most of which showed a positive phosphatase test, were negative for Y. enterocolitica. One out of 265 samples (0.4%) of pasteurized fluid dairy products contained Y. enterocolitica.
D A Schiemann
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  36     ISSN:  0099-2240     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  1978 Aug 
Date Detail:
Created Date:  1978-11-29     Completed Date:  1978-11-29     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  274-7     Citation Subset:  IM    
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MeSH Terms
Food Contamination
Food Microbiology*
Food Preservation
Phosphoric Monoester Hydrolases / analysis
Yersinia / enzymology,  isolation & purification*
Reg. No./Substance:
EC 3.1.3.-/Phosphoric Monoester Hydrolases

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