Answered: The bacterial load of a ketchup…

The bacterial load of a ketchup (pH-3.9) can be reduced from 6,000 units to 6 units in 15 minutes at 101°C. (1) What is its D-value at 101 °C? (ii) How long should it be processed to sterilize it?

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter7: Reaction Rates And Chemical Equilibrium

Section: Chapter Questions

Problem 7.42P

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Glucogenesis

Glucogenesis is a metabolic pathway in which glucose is produced from carbon substrates that are not carbohydrates. This process is observed in plants, animals, fungi, bacteria and other micro organisms. The general definition for glucogenesis or gluconeogenesis is as follows,

Question

The bacterial load of a ketchup (pH-3.9) can be reduced from 6,000 units to 6 units in 15 minutes at 101 °C.
(1) What is its D-value at 101 °C?
(ii) How long should it be processed to sterilize it?
(i) 3 minutes; (ii) 15 minutes
(1) 3 minutes; (ii) 36 minutes
(i) 5 minutes; (ii) 25 minutes

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