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National Agricultural Library
U.S. Department of Agriculture
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  4. Investigation of Acid Resistance of Escherichia Coli Strains

Investigation of Acid Resistance of Escherichia Coli Strains

Objective

The purpose of this study is to determine the survivability of Escherichia coli strains isolated from five sources (foods, bovine carcasses, bovine feces, water, and human) in acetic acid solutions under conditions that are typical of acidified foods.

More information

Approach:
The survivability of Escherichia coli strains in acidified foods will be investigated under a variety of environmental conditions. Pure and mixed culture cell suspensions will be tested to determine acid resistance under various atmospheric conditions, pH values, and ionic strengths. The genetic relationships between strains will be characterized to determine if there are correlations between genotype and acid resistance phenotype. Genes relating to acid resistance may be identified.

Investigators
Breidt, Frederick
Institution
USDA - Agricultural Research Service
Start date
2008
End date
2013
Funding Source
Agricultural Research Service
Project number
6645-41420-006-01
Categories
Escherichia coli