Model for bacterial culture growth rate throughout the entire biokinetic temperature range
1983; American Society for Microbiology; Volume: 154; Issue: 3 Linguagem: Inglês
10.1128/jb.154.3.1222-1226.1983
ISSN1098-5530
AutoresDavid A. Ratkowsky, Robert K. Lowry, TA McMeekin, A N Stokes, R.E. Chandler,
Tópico(s)thermodynamics and calorimetric analyses
ResumoThe "square-root" relationship proposed by Ratkowsky et al. (J. Bacteriol. 149:1-5, 1982) for modeling the growth rate of bacteria below the optimum growth temperature was extended to cover the full biokinetic temperature range. Two of the four parameters of this new nonlinear regression model represent minimum and maximum temperature bounds, respectively, for the predicted growth of the culture. The new model is easy to fit and has other desirable statistical properties. For example, the least-squares estimators of the parameters of the model were almost unbiased and normally distributed. The model applied without exception to all bacterial cultures for which we were able to obtain data. Results for 30 strains are reported.
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