BIOL240 Lecture Notes - Lecture 11: Pasteurization, Antibiotics, Antiseptic
Document Summary
A large part of microbio involves preventing microbial growth in food, industry processes and healthcare environments, water systems: different strategies to control microbial growth: Heat sterilization, radiation, removal by filter sterilization, chemical control: heat sterilization: Decimal reduction time: time it takes to reduce the population by 1 log or 10x at a particular temperature. Often use an apparatus used an autoclave: Chamber that allows the entrance of steam under pressure, As the steam flows into the autoclave, the pressure increases allowing temperatures of more than 100 celsius. Typically, temperatures of about 121 are used to ensure the desiccation of spores. can also change the rate at which the pressure is released, Sterilization time: time after which the object reaches a certain pressure: reason that you need that amount of time is to ensure that all the endospores have been desiccated, Endospores have a decimal reduction time of 4-5 minutes, Can also dry heat in an over.
