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KMID : 1024620090290030349
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Food Science of Animal Resources
2009 Volume.29 No. 3 p.349 ~ p.355
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Mathematical Simulation of the Temperature Dependence of Time Temperature Integrator (TTI) and Meat Qualities
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Park Han-Jo
Shim Soo-Dong
Min Sang-Gi
Lee Seong-Ju
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Abstract
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The temperature dependence of time temperature integrator (TTI) was investigated in terms of the Arrhenius activation energy (Ea) to determine TTI requirements to accurately predict meat quality during storage. Mathematical simulation was conducted using a numerical analysis. First, using Euler’s method and MS Excel VBA, the TTI color change was kinetically modeled and numerically calculated under several storage conditions. From the TTI color variable profiles calculated from the storage time-temperature profiles, , which is a constant temperature representing the whole temperature profiles, was calculated. Upon predicting Pseudomonas spp. concentrations (one of the meat qualities) from , it was found that if be true, then Pseudomonas concentrations were calculated to be constant with the same TTI color values, regardless of time-temperature profiles, whereas if then Pseudomonas concentrations varied even with the same TTI color values. This indicates that each TTI color value represents its own fixed degree of meat quality, only if .
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KEYWORD
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time temperature integrator, temperature dependence, activation energy, mathematical simulation
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