MLA Refrigeration Index Calculator
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DOLU 03/29/2019
Model-Creator Food Safety Centre
Model-Foodprocess Fermentation
Model-InpendenVariables temp, time
Model-Notes The Refrigeration Index (RI) is an index for the log growth of E. coli.  It predicts the expected growth of E. coli on meat from temperature and other data. The model has values for pH, water activity and lactate concentration which in addition to temperature, all affect the growth rate of E. coli. The current RI model allows for the user to enter data on temperatures of the product over time.  The other parameters are set by choosing the type of product. indication of the effectiveness of refrigeration, is NOT a prediction of the number of E. coli in the product.
Model-ReferenceDescription Ross, T., Ratkowsky, D. A., Mellefont, L. A. and T.A. McMeekin, T. A. (2003) Modelling the effects of temperature, water activity, pH and lactic acid concentration on the growth rate of Escherichia coli. Int.J.Food Microbiol. 82:33-44; Mellefont, L.A., McMeekin, T.A. and Ross, T. (2003) Performance evaluation of a model describing the effects of temperature, water activity, pH and lactic acid concentration on the growth of Escherichia coli. Int.J.Food Microbiol. 82:45-58.
Model-Type Growth
PMF-Environment meat
PMF-Environment-Details Meat
PMF-Organism Escherichia coli
Software Food_safety_center
Software-Accessibility Public / Local installation / on-line
Software-Link http://www.foodsafetycentre.com.au/fermenter.php
system:type OpenFSMR
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Author taras_guenther
Last Updated 17 September 2019, 14:16 (CEST)
Created 17 September 2019, 14:16 (CEST)