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Validation of a model describing the effects of temperature and water activity on the growth of psychrotrophic pseudomonads

Citation

Neumeyer, K and Ross, T and Thomson, G and McMeekin, TA, Validation of a model describing the effects of temperature and water activity on the growth of psychrotrophic pseudomonads, International Journal of Food Microbiology, 38, (1) pp. 55-63. ISSN 0168-1605 (1997) [Refereed Article]

DOI: doi:10.1016/S0168-1605(97)00090-1

Abstract

The reliability of the predictive model for the growth of psychrotrophic pseudomonads was evaluated both under controlled laboratory conditions and in industry conditions using various milks, milk-based products, meat and meat products. The validation process involved monitoring the growth of pseudomonads at various temperatures and comparing the observed generation times to those predicted by the model using bias and accuracy factors. For fluctuating temperatures bias and accuracy factors were used to compare the predicted and observed times to reach various population densities. The psychrotrophic pseudomonad model was shown to predict accurately the growth of pseudomonads in the products tested. In some instances knowledge of the lag phase duration was required to maximise the performance of the model.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Manufacturing Engineering
Research Field:Manufacturing Safety and Quality
Objective Division:Manufacturing
Objective Group:Dairy Products
Objective Field:Dairy Products not elsewhere classified
Author:Neumeyer, K (Ms Karina Neumeyer)
Author:Ross, T (Associate Professor Tom Ross)
Author:McMeekin, TA (Professor Thomas McMeekin)
ID Code:10750
Year Published:1997
Web of Science® Times Cited:52
Deposited By:Agricultural Science
Deposited On:1997-08-01
Last Modified:2011-08-11
Downloads:0

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