What is the D-value for a microorganism if it takes 5 minutes to reduce the population by 90% at 121°C?
Correct Answer: 5 minutes
- Step 1: Understand what D-value means. It is the time needed to reduce the number of microorganisms by 90%.
- Step 2: Look at the information given. It says it takes 5 minutes to reduce the population by 90% at 121°C.
- Step 3: Since the D-value is defined as the time to reduce the population by 90%, we can directly use the time given.
- Step 4: Conclude that the D-value for this microorganism at 121°C is 5 minutes.
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