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Modelling the growth limits (growth/no growth interface) of Escherichia coli as a function of temperature, pH, lactic acid concentration, and water activity.

Author(s) : PRESSER K. A., ROSS T., RATKOWSKY D. A.

Type of article: Article

Summary

Under experimental conditions at which the pH and the undissociated acid concentrations were the major growth-limiting factors, the growth/no growth interface was essentially independent of temperature at temperatures ranging from 15 to 37 deg C. The interface between conditions that allowed growth and conditions at which growth did not occur was abrupt. The inhibitory effect of combinations of water activity and pH varied with temperature. Predictions of the model for the growth/no growth interface were consistent with 95% of the experimental data set.

Details

  • Original title: Modelling the growth limits (growth/no growth interface) of Escherichia coli as a function of temperature, pH, lactic acid concentration, and water activity.
  • Record ID : 1999-0866
  • Languages: English
  • Source: Appl. environ. Microbiol. - vol. 64 - n. 5
  • Publication date: 1998/05

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