ABSTRACTA one meal‐set of military ration consists of heat sterilized, high‐ and low‐acid foods in semirigid containers. These foods are processed separately because of large differences in lethality requirements. We examined the feasibility of simultaneously processing a meal‐set consisting of chili con came, white rice, and sliced peach in syrup to minimize costs. Simultaneous processing was not possible by adjusting initial temperaturès according to computer‐simulation using food temperature data collected experimentally. However, it was possible when the container for peaches was insulated properly with expanded polystyrene. Proper insulation thickness was slightly dependent on z value of the tar
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