How does heat sterilization kill bacteria?
Click to see full answer
Simply so, how does heat sterilization work?
Process. The dry heat sterilization process is accomplished by conduction; that is where heat is absorbed by the exterior surface of an item and then passed inward to the next layer. Dry heat destroys microorganisms by causing denaturation of proteins.
Beside above, how does sterilization work to kill bacteria? Sterilization is the killing or removal of all microorganisms, including bacterial spores, which are highly resistant. Surgical instruments that can be damaged by moist heat are usually sterilized by exposure to ethylene oxide gas, and most intravenous solutions are sterilized by filtration.
Similarly one may ask, how does dry heat kill bacteria?
Dry heat helps kill the organisms using the destructive oxidation method. This helps destroy large contaminating bio-molecules such as proteins. The essential cell constituents are destroyed and the organism dies. The temperature is maintained for almost an hour to kill the most difficult of the resistant spores.
What conditions are required for sterilization by moist heat?
Sterilization involving lower temperature and high-pressure of water (steam) is known as Moist Heat Sterilization. Sterilization involving the dry air of higher temperature and for the longer time is known as Dry Heat Sterilization. As the name says, it needs steam and water. There is no use of steam and water.