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Modelling the bacterial growth/no growth interface
journal contribution
posted on 2023-05-16, 09:54 authored by David RatkowskyDavid Ratkowsky, Thomas RossThomas RossA logistic regression model is proposed which enables one to model the boundary between growth and no growth for bacterial strains in the presence of one or more growth controlling factors such as temperature, pH and additives such as salt and sodium nitrite. The form of the expression containing the growth limiting factors may be suggested by a kinetic model, while the response at a given combination of factors may either be presence/absence (i.e. growth/no growth) or probabilistic (i.e. r successes in n trials). The approach described represents an integration of the probability and kinetic aspects of predictive microbiology, and a unification of predictive microbiology and the hurdle concept. The model is illustrated using data for Shigella flexneri.
History
Publication title
Letters in Applied MicrobiologyVolume
20Pagination
29-33ISSN
0266-8254Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Blackwell Publishing LtdPlace of publication
United KingdomRepository Status
- Restricted