Expansion and validation of a predictive model for the growth of Bacillus stearothermophilus in military rations

T. M. Ng; E. Viard; M. L. Caipo; S. Duffy; D. W. Schaffner

doi:10.1111/j.1365-2621.2002.tb08739.x

Expansion and validation of a predictive model for the growth of Bacillus stearothermophilus in military rations

T. M. Ng, E. Viard, M. L. Caipo, S. Duffy, D. W. Schaffner

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Predictive models for the exponential growth rate (EGR) and germination, outgrowth, and lag times (GOL) of Bacillus stearothermophilus previously developed in our laboratory were expanded to include higher salt (1.5%) formulations. The expanded models were validated in 7 military meals-ready-to-eat incubated at temperatures from 45°C to 60°C, and tryptic soy broth incubated from 37.5°C to 70°C. The 95% prediction intervals for EGR were fail-safe in all the military rations tested. The 95% prediction intervals for GOL were fail-safe in 5 of the 7 rations. The TSB results illustrate the dangers of using empirical models to predict microbial behavior outside the range of conditions under which the models were developed.

Original language	English (US)
Pages (from-to)	1872-1878
Number of pages	7
Journal	Journal of Food Science
Volume	67
Issue number	5
DOIs	https://doi.org/10.1111/j.1365-2621.2002.tb08739.x
State	Published - Jan 1 2002

All Science Journal Classification (ASJC) codes

Food Science

Keywords

Accuracy
Bacillus stearothermophilus
Bias
Modeling
Validation

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title = "Expansion and validation of a predictive model for the growth of Bacillus stearothermophilus in military rations",

abstract = "Predictive models for the exponential growth rate (EGR) and germination, outgrowth, and lag times (GOL) of Bacillus stearothermophilus previously developed in our laboratory were expanded to include higher salt (1.5%) formulations. The expanded models were validated in 7 military meals-ready-to-eat incubated at temperatures from 45°C to 60°C, and tryptic soy broth incubated from 37.5°C to 70°C. The 95% prediction intervals for EGR were fail-safe in all the military rations tested. The 95% prediction intervals for GOL were fail-safe in 5 of the 7 rations. The TSB results illustrate the dangers of using empirical models to predict microbial behavior outside the range of conditions under which the models were developed.",

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AU - Ng, T. M.

AU - Viard, E.

AU - Caipo, M. L.

AU - Duffy, S.

AU - Schaffner, D. W.

PY - 2002/1/1

Y1 - 2002/1/1

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