Document Detail

Combining nonthermal technologies to control foodborne microorganisms.
MedLine Citation:
PMID:  14623378     Owner:  NLM     Status:  MEDLINE    
Novel nonthermal processes, such as high hydrostatic pressure (HHP), pulsed electric fields (PEFs), ionizing radiation and ultrasonication, are able to inactivate microorganisms at ambient or sublethal temperatures. Many of these processes require very high treatment intensities, however, to achieve adequate microbial destruction in low-acid foods. Combining nonthermal processes with conventional preservation methods enhances their antimicrobial effect so that lower process intensities can be used. Combining two or more nonthermal processes can also enhance microbial inactivation and allow the use of lower individual treatment intensities. For conventional preservation treatments, optimal microbial control is achieved through the hurdle concept, with synergistic effects resulting from different components of the microbial cell being targeted simultaneously. The mechanisms of inactivation by nonthermal processes are still unclear; thus, the bases of synergistic combinations remain speculative. This paper reviews literature on the antimicrobial efficiencies of nonthermal processes combined with conventional and novel nonthermal technologies. Where possible, the proposed mechanisms of synergy is mentioned.
Alexander I V Ross; Mansel W Griffiths; Gauri S Mittal; Hilton C Deeth
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  International journal of food microbiology     Volume:  89     ISSN:  0168-1605     ISO Abbreviation:  Int. J. Food Microbiol.     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-11-18     Completed Date:  2004-02-12     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  8412849     Medline TA:  Int J Food Microbiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  125-38     Citation Subset:  IM    
Department of Food Science, University of Guelph, Ontario, Canada N1G 2W1.
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MeSH Terms
Food Contamination / prevention & control*
Food Handling / methods*
Food Irradiation
Food Microbiology*
Food Preservation / methods*
Hydrostatic Pressure

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