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Applied and Environmental Microbiology, April 2000, p. 1726-1729, Vol. 66, No. 4
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Effects of Acid Adaptation, Product pH, and Heating on Survival of Escherichia coli O157:H7 in Pepperoni

Denise C. R. Riordan,1,* Geraldine Duffy,1 James J. Sheridan,1 Richard C. Whiting,2,dagger Ian S. Blair,3 and David A. McDowell3

The National Food Centre, Teagasc, Dunsinea, Castleknock, Dublin 15, Ireland1; Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, Pennsylvania 190382; and University of Ulster, Jordanstown, Newtownabbey, County Antrim, BT37 0QB Northern Ireland3

Received 14 June 1999/Accepted 3 January 2000

The thermotolerance of E. coli O157:H7 cells (strain 380-94) heated in pepperoni is reported. Information on the pattern of thermal inactivation of E. coli O157:H7 in pepperoni was applied in the development of heating processes designed to reduce E. coli O157:H7 numbers therein by 5 log10 units.

* Corresponding author. Present address: Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, 600 East Mermaid Ln., Wyndmoor, PA 19038. Phone: (215) 836-3757. Fax: (215) 233-6406. E-mail: driordan{at}arserrc.gov.

dagger Present address: FDA CFSAN HFS-500, Washington, DC 20204.

Applied and Environmental Microbiology, April 2000, p. 1726-1729, Vol. 66, No. 4
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:

  • Large, T. M., Walk, S. T., Whittam, T. S. (2005). Variation in Acid Resistance among Shiga Toxin-Producing Clones of Pathogenic Escherichia coli. Appl. Environ. Microbiol. 71: 2493-2500 [Abstract] [Full Text]  
  • Mao, Y., Doyle, M. P., Chen, J. (2001). Insertion Mutagenesis of wca Reduces Acid and Heat Tolerance of Enterohemorrhagic Escherichia coli O157:H7. J. Bacteriol. 183: 3811-3815 [Abstract] [Full Text]  


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