Question

Describe the method of pasteurisation for the preservation of milk.

Answer 1

Pasteurization:

1. Pasteurisation is a method of food preservation developed by Louis Pasteur, especially to store milk.
   
2. In pasteurisation, milk is first heated to about 72 degrees Celsius for 15 to 30 seconds.
   
3. Then it is suddenly chilled and stored giving a cold shock to the milk, which prevents the growth of microbes.
4. Pasteurisation deactivates the microbes and reduces the enzyme activity by reduction of temperature.