Document Detail


Contribution of hydrogen peroxide to the inhibition of Staphylococcus aureus by Lactococcus garvieae in interaction with raw milk microbial community.
MedLine Citation:
PMID:  20688234     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The response of Staphylococcus aureus growth inhibition by Lactococcus garvieae to catalase and milk lactoperoxidase, and its efficiency in raw milk cheese were evaluated. S. aureus and L. garvieae were co-cultivated in broth buffered at pH 6.8, and in raw, pasteurized and microfiltered milk, in presence and absence of catalase. Although H2O2 production by L. garvieae was detected only in agitated broth, the inhibition of S. aureus by L. garvieae was reduced by catalase both in static and shaking cultures by 2.7 log, pasteurized milk (approximately 0.7 log), microfiltered milk (approximately 0.6 log) and raw milk (approximately 0.2 log). The growth of S. aureus alone in microfiltered milk was delayed compared with that in pasteurized milk and inhibition of S. aureus by L. garvieae was stronger in microfiltered milk. The inhibition of coagulase-positive staphylococci (CPS) by L. garvieae in raw milk cheese was similar to that in raw milk (approximately 0.8 log), but weaker than that in pasteurized and microfiltered milks. L. garvieae also had an early antagonistic effect on the growth of several other microbial groups, which lastingly affected populations levels and balance during cheese ripening.
Authors:
Céline Delbes-Paus; Géraud Dorchies; Zineddine Chaabna; Cécile Callon; Marie-Christine Montel
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-06-04
Journal Detail:
Title:  Food microbiology     Volume:  27     ISSN:  1095-9998     ISO Abbreviation:  Food Microbiol.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-08-06     Completed Date:  2010-12-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8601127     Medline TA:  Food Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  924-32     Citation Subset:  IM    
Copyright Information:
2010 Elsevier Ltd. All rights reserved.
Affiliation:
Unité de Recherches Fromagères UR545, INRA, 20 Côte de Reyne, F-15000 Aurillac, France. celine.delbes@clermont.inra.fr
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MeSH Terms
Descriptor/Qualifier:
Animals
Anti-Infective Agents, Local / pharmacology*
Antibiosis
Catalase / metabolism
Coculture Techniques
Colony Count, Microbial
Consumer Product Safety
Food Microbiology
Humans
Hydrogen Peroxide / metabolism,  pharmacology*
Lactococcus / physiology*
Lactoperoxidase / metabolism
Milk / enzymology,  microbiology*
Staphylococcus aureus / drug effects*,  growth & development*
Chemical
Reg. No./Substance:
0/Anti-Infective Agents, Local; 7722-84-1/Hydrogen Peroxide; EC 1.11.1.-/Lactoperoxidase; EC 1.11.1.6/Catalase

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