Influence of Temperature, NaCI, and pH on the Growth of Aeromonas Hydrophila |
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| Authors: | SAMUEL A PALUMBO DONNA R MORGAN ROBERT L BUCHANAN |
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| Affiliation: | Authors Palumbo and Buchanan are with the USDA-ARS Eastern Regional Research Center, 600 East Mermaid Lane, Philadelphia, PA 19118. Author Morgan was with Program in Infectious Diseases, Univ. of Texas Medical School at Houston, Houston, TX. Her current address is Norwich Pharmaceuticals, Inc., P. O. Box 191, Norwich, NY 13815. |
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| Abstract: | Growth of clinical isolates of Aeromonas hydrophila at various temperatures, pH values, and salt levels was studied in BHI broth. A majority of the isolates grew at 4-5°C and 42°C, and all grew equally well over the range 20-35°C. At 28°C, most isolates could tolerate 4% NaCl, while at 4°C only a limited number grew in 3% NaCl. Similarly, isolates could better tolerate acidic conditions when cultured at 28°C as compared to 4°C. These data suggest that it is likely that A. hydrophila strains associated with human gastroenteritis are capable of growing in foods at refrigeration temperatures currently considered adequate for preventing the growth of foodborne pathogens. |
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