Allied & ICAR Exam Bank • ALLIED_1347 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Thermal Processing and Kinetics

Subtopic: Pasteurization Alkaline Phosphatase Test

Question Statement:

The enzymatic adequacy of commercial HTST milk pasteurization is universally verified by the inactivation of which heat-sensitive indigenous milk enzyme?

Options:

  • (A) Alkaline phosphatase
  • (B) Lipase
  • (C) Lactoperoxidase
  • (D) Lysozyme

Answer Key:

A

Step-by-Step Solution & Explanation

Alkaline phosphatase has thermal destruction kinetics slightly more heat-resistant than the target pathogen *Coxiella burnetii*; negative phosphatase activity guarantees legal pasteurization.
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