What enzyme is used to test if pasteurizing worked?

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Multiple Choice

What enzyme is used to test if pasteurizing worked?

Explanation:
Alkaline phosphatase is used to test if pasteurizing worked. This enzyme is present in milk and is relatively resistant to heat, so milk that hasn’t been pasteurized properly may still show activity. When pasteurization is done correctly, this enzyme is inactivated, and no activity should be detected. So detecting alkaline phosphatase after processing indicates underpasteurization. Lactase, amylase, and lipase aren’t reliable indicators for verifying pasteurization because their presence or heat-inactivation profiles don’t provide a consistent, pass/fail signal for the processing step.

Alkaline phosphatase is used to test if pasteurizing worked. This enzyme is present in milk and is relatively resistant to heat, so milk that hasn’t been pasteurized properly may still show activity. When pasteurization is done correctly, this enzyme is inactivated, and no activity should be detected. So detecting alkaline phosphatase after processing indicates underpasteurization.

Lactase, amylase, and lipase aren’t reliable indicators for verifying pasteurization because their presence or heat-inactivation profiles don’t provide a consistent, pass/fail signal for the processing step.

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