Question

The "z" value of a micro-organism is 6°C and the temperature of processing is 105°C then the lethal rate of microorganism is

• A. 21.5
• B. 0.215
• C. $2.15 \times 10^{-3}$
• D. $2.15 \times 10^2$

Hint:

To verify lethal rate calculations quickly:
At \(T = T_{\text{ref}}\), the lethal rate \(L = 10^0 = 1\).
As the temperature falls below \(121^\circ\text{C}\), the lethal rate decreases exponentially.
For \(T = 105^\circ\text{C}\), the value must be very small (\(10^{-3}\) range), which helps identify the correct option.

Answer 1

The Correct Option is C