[Kinetics of thermal killing of microorganisms in egg yolk]

Egg yolk is relating to its germ content and enzyme activity only restricted storable. Unpasteurized egg yolk get spoiled between a few hours and days. The rapid spoilage can be reduced by a pasteurization and following cold storage. The storage stability of egg yolk can be increased by additives, e.g. salt or saccharose. Kinetic results of the thermal microorganisms destruction in the egg yolk with and without stabilizing additives are presented in this article. It will be shown that the evaluation method from REICHART gives representative results for mixed cultures, too. A further evaluation method by a differential equation will be demonstrated and discussed.