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Modelling the combined effect of salt, sorbic acid and nisin on the probability of growth of Clostridium sporogenes in high moisture processed cheese analogue

Citation

Khanipour, E and Flint, SH and McCarthy, OJ and Palmer, J and Golding, M and Ratkowsky, DA and Ross, T and Tamplin, M, Modelling the combined effect of salt, sorbic acid and nisin on the probability of growth of Clostridium sporogenes in high moisture processed cheese analogue, International Dairy Journal, 57 pp. 62-71. ISSN 0958-6946 (2016) [Refereed Article]

Copyright Statement

© 2016 Published by Elsevier Ltd.

DOI: doi:10.1016/j.idairyj.2016.02.039

Abstract

This study focused on the application of hurdle technology to inhibit the growth of Clostridium sporogenes in high moisture, low salt, ambient shelf-stable processed cheese analogue (PCA). The effectiveness of various combinations of salt, potassium sorbate and nisin in inhibiting C. sporogenes growth was quantified using logistic regression to produce probability-of-growth models. The results of this study demonstrate that it is feasible to produce a high moisture and low salt PCA, if sufficient concentrations of potassium sorbate and nisin are added to the product. Any change in the concentration of one of the selected preservatives must be compensated for by changes in concentrations of the other two preservatives. The models developed enable the level of probability to be set to provide a required level of stringency. The models tend to be fail-safe as they were developed using an inoculum size larger than the expected contamination in processed cheese.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Food Sciences
Research Field:Food Packaging, Preservation and Safety
Objective Division:Health
Objective Group:Public Health (excl. Specific Population Health)
Objective Field:Food Safety
Author:Ratkowsky, DA (Dr David Ratkowsky)
Author:Ross, T (Associate Professor Tom Ross)
Author:Tamplin, M (Professor Mark Tamplin)
ID Code:114770
Year Published:2016
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2017-02-27
Last Modified:2017-11-06
Downloads:0

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