Question

_________ is defined as the time taken at a given temperature to eliminate at least 90% of the exposed microorganisms.

(a) F0 value

(b) Thermal death time

(c) D value

(d) Z value

I got this question in an interview.

My question is based upon Heat Transfer Applications topic in chapter Heat Transfer Applications of Food Processing Unit Operations

Answer 1

Correct answer is (c) D value

Explanation: D valueis defined as the time taken at a given temperature to eliminate at least 90% of the exposed microorganisms. It is suitable to examine the efficiency of thermal inactivation of different microbes under different conditions.