Figure 7.1
A suspension of 106 Bacillus cereus endospores was put in a hot- air oven at 170°C. Plate counts were used to determine the number of endospores surviving at the time intervals shown.

-In Figure 7.1, the decimal reduction time (D value) for the culture is approximately
A) 0 minutes.
B) 10 minutes.
C) 30 minutes.
D) 40 minutes.
E) 60 minutes.
Correct Answer:
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