Answers

2016-04-22T13:16:29+05:30
Ans:  During the change lactose present milk changes to lactic acid by bacteria. Bacteria ate total sugars present in the milk and releases different types of byproducts (one among is lactic acid). When the concentration of lactic acid increases the milk starts to become sour.

The reaction involved during the change is very much complicated.

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2016-04-22T13:17:06+05:30
During the change lactose present milk changes to lactic acid by bacteria. Bacteria ate total sugars present in the milk and releases different types of byproducts..
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