Discussion
Thermal destruction of microorganisms follows a kinetics of
Answer: B
Thermal destruction of microorganisms follows First order kinetics.
At a constant lethal temperature the number of surviving cells falls by the same fraction in each equal interval of time:
\[ \log\frac{N}{N_{0}} = -\frac{t}{D} \]
so a plot of log survivors against time is a straight line. The decimal reduction time D, the time to kill 90 percent of the population, and the related z and F values of thermal process design all rest on this first-order model.
Zero order would mean a constant number killed per minute, and second or fractional orders do not describe the logarithmic death curve.
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