Q » How does milk spoil over time?
30 Oct, 2025
A » Milk spoils due to the growth of bacteria, yeast, and mold over time. Initially, pasteurized milk is free from harmful microbes, but once exposed to air, it becomes susceptible to these microorganisms. They break down lactose, the sugar in milk, producing lactic acid, which causes the sour taste and unpleasant odor. Proper refrigeration slows this process, but eventually, milk will spoil as microbial growth continues.
30 Oct, 2025
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