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Simplified Procedure for Estimating the Effect of a Change in Heating Rate on Sterilization Value 1
D Naveh1, I J Pflug1, I J Kopelman1
1Department of Food Science and Nutrition, University of Minnesota, 1334 Eckles Avenue, St. Paul, Minnesota 55108 and Department of Food Engineering and Biotechnology, Technion, Haifa, Israel.
Abstract:
A general relationship between a relative change in the temperature response parameter, f, and the sterilization value delivered in a thermal process has been developed. The relationship is based on numerical differentiation of Ball's formula method and employs a dimensionless elasticity term to express the relative change in sterilization value due to a relative change in heating rate. The funtion presented can be used for g's of up to 30°F and for changes of 3 to 20% in the value of the temperature response parameter.
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