Microorganism Controlling by Pasteurization - This is not supposed to provide sterilisation. Here the bacterial population of a liquid as milk is merely reduced, and the organisms which may cause human diseases are destroyed. Spores are not affected. One method for milk pasteurization is holding method.
It involves heating at 62.9°C for 30 min. It kills both tubercle bacterium, Mycobacterium tuberculosis and the Q fever agent. Other methods are the flash pasteurization at 71.6°C for 15 seconds, and the ultrapasteurization at 82°C for 3 seconds.
