Document Detail

Thermal inactivation of H5N2 high-pathogenicity avian influenza virus in dried egg white with 7.5% moisture.
MedLine Citation:
PMID:  19777906     Owner:  NLM     Status:  MEDLINE    
High-pathogenicity avian influenza viruses (HPAIV) cause severe systemic disease with high mortality in chickens. Isolation of HPAIV from the internal contents of chicken eggs has been reported, and this is cause for concern because HPAIV can be spread by movement of poultry products during marketing and trade activity. This study presents thermal inactivation data for the HPAIV strain A/chicken/PA/1370/83 (H5N2) (PA/83) in dried egg white with a moisture content (7.5%) similar to that found in commercially available spray-dried egg white products. The 95% upper confidence limits for D-values calculated from linear regression of the survival curves at 54.4, 60.0, 65.5, and 71.1 degrees C were 475.4, 192.2, 141.0, and 50.1 min, respectively. The line equation y = [0.05494 x degrees C] + 5.5693 (root mean square error = 0.0711) was obtained by linear regression of experimental D-values versus temperature. Conservative predictions based on the thermal inactivation data suggest that standard industry pasteurization protocols would be very effective for HPAIV inactivation in dried egg white. For example, these calculations predict that a 7-log reduction would take only 2.6 days at 54.4 degrees C.
Colleen Thomas; David E Swayne
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food protection     Volume:  72     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-09-25     Completed Date:  2009-10-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1997-2000     Citation Subset:  IM    
US Department of Agriculture, Agricultural Research Service, Exotic and Emerging Avian Viral Disease Research Unit, Southeast Poultry Research Laboratory, 934 College Station Road, Athens, Georgia 30605, USA.
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MeSH Terms
Consumer Product Safety*
Egg White / virology*
Food Contamination / analysis,  prevention & control
Food Preservation / methods*
Hot Temperature*
Influenza A Virus, H5N2 Subtype / growth & development*
Linear Models
Time Factors
Virus Inactivation

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

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