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Tests for proper pasteurization are based on the activity of which enzyme?

a) Lactase
b) Diastase
c) Phosphatase
d) Catalase

Answer: c
Explanation: Phosphatase is an enzyme which is naturally present in milk, but is destroyed at a temperature just near to the pasteurization temperature. Alkaline Phosphatase test is used to indicate whether milk has been adequately pasteurised or whether it has been contaminated with raw milk after pasteurization.

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