Question Bank • QB_DFE_EXP_024 MCQ • 1 Mark

Section 7: Dairy and Food Engineering

Unit Operations in Dairy and Food Engineering

Subtopic: Pasteurization

Question Statement:

The adequacy of milk pasteurization is universally verified in dairy quality control laboratories by testing for the inactivation of which endogenous enzyme?

Options:

  • (A) Alkaline phosphatase
  • (B) Lipase
  • (C) Catalase
  • (D) Lactase

Answer Key:

A

Step-by-Step Solution & Explanation

Alkaline phosphatase is an enzyme naturally present in raw milk with thermal resistance slightly greater than *Coxiella burnetii* (the most heat-resistant pathogenic bacterium in milk). Its complete inactivation confirms that milk has been effectively pasteurized.
← Previous (QB_DFE_UOP_014) Next (QB_DFE_EXP_027) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test