Modeling of bacterial growth as a function of temperature
| Autor: | Marcel H. Zwietering, J.T. de Koos, K. van 't Riet, J C de Witt, B.B.E. Hasenack |
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| Rok vydání: | 1991 |
| Předmět: |
Bacterial growth
Biology Models Biological Applied Microbiology and Biotechnology Sectie Proceskunde Sub-department of Food and Bioprocess Engineering F-test Food Chemistry and Microbiology Life Science Lack-of-fit sum of squares Growth rate Variable (mathematics) Models Statistical Ecology Temperature Function (mathematics) Lactobacillus Levensmiddelenchemie en -microbiologie Yield (chemistry) Food Microbiology Asymptote Biological system Research Article Food Science Biotechnology |
| Zdroj: | Applied and Environmental Microbiology 57 (1991) 4 Scopus-Elsevier Applied and Environmental Microbiology, 57(4), 1094-1101 |
| ISSN: | 1098-5336 0099-2240 |
| DOI: | 10.1128/aem.57.4.1094-1101.1991 |
| Popis: | The temperature of chilled foods is a very important variable for microbial safety in a production and distribution chain. To predict the number of organisms as a function of temperature and time, it is essential to model the lag time, specific growth rate, and asymptote (growth yield) as a function of temperature. The objective of this research was to determine the suitability and usefulness of different models, either available from the literature or newly developed. The models were compared by using an F test, by which the lack of fit of the models was compared with the measuring error. From the results, a hyperbolic model was selected for the description of the lag time as a function of temperature. Modified forms of the Ratkowsky model were selected as the most suitable model for both the growth rate and the asymptote as a function of temperature. The selected models could be used to predict experimentally determined numbers of organisms as a function of temperature and time. |
| Databáze: | OpenAIRE |
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