Elsevier

Food Microbiology

Volume 2, Issue 2, April 1985, Pages 115-122
Food Microbiology

Temperature/growth relationships for psychrotrophic food-spoilage bacteria

https://doi.org/10.1016/S0740-0020(85)80004-6Get rights and content

The growth of psychrotrophic food-spoilage bacteria in pure cultures and in binary mixtures at chill temperatures (2–15°C) was monitored using colony counts. Sigmoidal curves of best fit were calculated for the data with a computer program. Growth/temperature relationships were studied using two mathematical equations: the Arrhenius relationship (k = Ae-μ/RT) and the Square Root relationship (√r = b(T − To)). The Square Root equation was found to be the better description of the microbial growth/temperature relationship at chill temperatures and was also applicable to mixtures of organisms. Implications of these results in relation to food analysis are discussed.

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