Thermal Process and Microorganim of Concern

 Sterilized products. According to fda definition, the thermal process has the goal to ensure the destruction of all the germs capable of growing at the normal – non refrigerated storage conditions. This means all mesophilic sporeformers and vegetative. Microorganisms of concern. Pathogen: cl botulinum, b.cereus; banal spoilage: cl. Sporogenes, b. Subtilis. Control factors. Major: heat treatment parameters. Minor: ph, storage temperature (lower than 37°c). Pasteurized products. The thermal process is a “chill pasteurization” and has the goal to ensure the destruction of all path. /vegetative bacteria and to achieve a minimum 30 days stability at refrigerated storage conditions. Microorganisms of concern . Pathogen: s. Aureus, listeria monocy.(the most heat resistant cells of path.). Banal spoilage: yeasts and molds, enterobacteria, psicroph. Germs. Control factors. Major: heat treatment, chilling time, storage temperature. Minor: ph, kind of substratum.