LPT-0077
QUESTION
Efficacy of pasteurization is judged by?
OPTIONS
(A) Dye reduction test
(B) Alkaline phosphatase test
(C) Amylase test
(D) Malachite test
ANSWER
(B) Alkaline phosphatase test
EXPLANATION
The alkaline phosphatase test is the standard indicator of pasteurization efficacy because properly pasteurized milk should show inactivation of this heat-sensitive native enzyme. Dye-reduction tests assess microbial quality, while amylase and malachite tests are not the routine pasteurization checks. Therefore, option (B) is correct.
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