What are the survival microbes for high heat treatment?

Among the microorganisms, bacteria is the one that need to be taken care of as mold and yeasts are readily killed during high heat treatment.

Clostridium botulinum. (sometimes called "botch") is a spore-forming bacterium which grows only in the absence of oxygen. Because to this characteristic, and to its preferences for a protein diet, it is called a "putrefactive anaerobe". It grows best at temperatures between 86 and 98 *F, although growth can occur at any temperature between 50 F and 100 *F.

The spores are found everywhere in the soil and any food may be contaminated with them. The bacteria themselves are not poisonous and we eat them every day in our food. It is only the toxin which they liberate when they grow in a food, which is poisonous. The spores are very heat resistant and can survive from 5 to 10 hours in boiling water. Since Clostridium botulinum grows readily in vegetables (except tomatoes), meats, fish and poultry, all such foods must receive a process designed to kill the spores of this bacterium.


http://www.agen.ufl.edu/~chyn/age2062/modules/Sterilization/sterilization.htm