Why milk become sour when kept outside for longer time?

Asked by  | 16th Jun, 2008, 03:21: PM

Expert Answer:

Milk becomes sour when kept outside for longer time through bacterial fermentation. It causes milk to coagulate and form a thicker consistency. Soured milk that is produced by bacterial fermentation is more specifically called fermented milk .

Answered by  | 21st Jun, 2008, 02:52: PM

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