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Death rate in minutes of the bacteria at a particular temperature with respect to the formula by Stumbo is directly proportional to _____

(a) Heating time in minutes

(b) Initial number of spores

(c) Number of positive TDT cans or tubes at a time

(d) All of the mentioned

I have been asked this question during an interview.

I would like to ask this question from Principles of Food Preservation by Canning-5 in portion Principles of Food Preservation by Canning and Drying and Principles of Food Concentrates of Food Engineering

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Right answer is (a) Heating time in minutes

Easy explanation: Death rate in minutes of the bacteria at a particular temperature with respect to the formula by Stumbo is directly proportional to heating time in minutes. It is indirectly proportional to the initial number of spores and number of positive TDT cans or tubes at a time.

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