Milk goes sour due to the chemical reaction of fermentation. ... As bacteria consume the lactose, these sugar molecules undergo a chemical reaction to become transformed into lactic acid. It is the lactic acid produced that causes the milk to taste and smell bad.
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Answer:
Milk goes sour due to the chemical reaction of fermentation. ... As bacteria consume the lactose, these sugar molecules undergo a chemical reaction to become transformed into lactic acid. It is the lactic acid produced that causes the milk to taste and smell bad.
Explanation:
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