Question

________ relates the resistance of an organism to differing temperatures.

(a) F0 value

(b) Thermal death time

(c) D value

(d) Z value

I had been asked this question in examination.

This is a very interesting question from Heat Transfer Applications topic in chapter Heat Transfer Applications of Food Processing Unit Operations

Answer 1

The correct choice is (d) Z value

To elaborate: Z- value is defined as the temperature (in degree) at which a tenfold reduction in D-value is attained. The main application of Z- value is in the calculating the thermal death time of a microorganism.