eCite Digital Repository

Modelling the bacterial growth/no growth interface


Ratkowsky, DA and Ross, T, Modelling the bacterial growth/no growth interface, Letters in Applied Microbiology, 20, (1) pp. 29-33. ISSN 0266-8254 (1995) [Refereed Article]

DOI: doi:10.1111/j.1472-765X.1995.tb00400.x


A 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.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Bacteriology
Objective Division:Manufacturing
Objective Group:Processed food products and beverages (excl. dairy products)
Objective Field:Non-dairy milk
UTAS Author:Ratkowsky, DA (Dr David Ratkowsky)
UTAS Author:Ross, T (Professor Tom Ross)
ID Code:5741
Year Published:1995
Web of Science® Times Cited:138
Deposited By:Agricultural Science
Deposited On:1995-08-01
Last Modified:2011-08-25

Repository Staff Only: item control page