LPT-0100
QUESTION
The indicator organism for pasteurization?
OPTIONS
(A) Coxiella burnetii
(B) Staphylococcus aureus
(C) E. coli
(D) Coliforms
ANSWER
(A) Coxiella burnetii
EXPLANATION
Coxiella burnetii was historically used as the reference heat-resistant non-spore-forming milk-borne pathogen for establishing pasteurization conditions. Staphylococcus aureus, E. coli, and coliforms are important organisms but are not the classical thermal target indicator used to define milk pasteurization. Hence, option (A) is correct.
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