In General, the production of yogurt to start destroying the microorganisms in water by heating milk by pasteurization (pasteurization) may be achieved in two ways: 62.8 degrees Celsius temperature for 30 minutes or temperature 77° c for 15 seconds, which can destroy the majority of microorganisms in milk, such as yeast and bacteria that do not tolerate heat, but they can't destroy the bacteria resistant to high temperatures (thermophillic bacteria) and the spores of certain kinds of microorganisms.
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