study of Salmonella enteritidis growth kinetics using Rapid Automated Bacterial Impedance Technique

In order to study strain-specific differences in their growth behaviour at different, and particularly lower, temperatures, generation times for 45 strains of Salmonella enteritidis isolated from food were determined impedimetrically over a temperature range from 7 to 42 degrees C. In practical term...

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Bibliographic Details
Published in:Journal of applied microbiology 1998-06, Vol.84 (6), p.945-949
Main Authors: Fehlhaber, K, Kruger, G
Format: Article
Language:English
Subjects:
Bacteriological methods and techniques used in bacteriology
Bacteriological Techniques
Bacteriology
Bacteriophage Typing
Biological and medical sciences
Cell Division
Electric Impedance
food contamination
Food industries
Food Microbiology
Fundamental and applied biological sciences. Psychology
Kinetics
Microbiology
Salmonella enteritidis
Salmonella enteritidis - growth & development
Temperature
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Summary:In order to study strain-specific differences in their growth behaviour at different, and particularly lower, temperatures, generation times for 45 strains of Salmonella enteritidis isolated from food were determined impedimetrically over a temperature range from 7 to 42 degrees C. In practical terms, 7 degrees C is the minimum requirement for Salm. enteritidis growth, and generation time variability increases markedly as this temperature is reached. Reports in the literature describing psychrotrophic behaviour and multiplication at lower temperatures cannot be confirmed. Generation time variability increased as temperature moved away from the optimal range with variation coefficients tending to rise as temperature fell. The great variability of multiplication parameters near the growth limit found in Salm. enteritidis may also be a characteristic of other bacterial species. It is therefore imperative to commence studies on larger numbers of strains to allow prediction of their behaviour at lower temperatures.
ISSN:1364-5072
1365-2672
DOI:10.1046/j.1365-2672.1998.00410.x