Agricultural Engineering > GATE 2015 > Sterilization
A suspension contains 3.6×10⁵ spores of C. botulinum having a D-value of 1.5 minute at 121.1 °C and 8.5×10⁶ spores of B. subtilis having a D-value of 0.9 minute at the same temperature. The suspension is heated at a constant temperature of 121.1 °C. The heating time needed in minutes for the suspension to obtain a survival probability of 10⁻³ for the most heat resistant organism in it is _______.
Correct : 13
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