Homework Help is Here – Start Your Trial Now!
Science
Biology
The following values were taken from the Richard's table on the thermal death kinetics of B. stearothermophi. (A=4.9x1037 min¹, E=67.48 kcal/mol, R=1.987 cal/mol K): Temperature, °C 120 121 125 130 Specific death rate The cumulative del factor constant k, min-¹ V 1.47 1.83 4.35 12.55 7.25 9.08 22.08 65.10 (i) The time taken for heating, cooling and holding periods in the sterilisation of a batch fermentor medium for the destruction of B. stearothermophilus were: time to heat from 100 to 121°C = 30 min time to cool from 121 to 100 °C = 16 min time of holding at 121 °C = 12 min Calculate the destruction ratio (No/N) for the process. (ii) If the sterilisation were to be carried out continuously at 130 °C, and the heating and cooling characteristics were: time to heat from 100 to 130 °C = 2 min time to cool from 130 to 100 °C = 1 min what holding time would be required to achieve the same ratio of (No/N) as in section (1) above? State all the assumptions made in your calculations.

The following values were taken from the Richard's table on the thermal death kinetics of B. stearothermophi. (A=4.9x1037 min¹, E=67.48 kcal/mol, R=1.987 cal/mol K): Temperature, °C 120 121 125 130 Specific death rate The cumulative del factor constant k, min-¹ V 1.47 1.83 4.35 12.55 7.25 9.08 22.08 65.10 (i) The time taken for heating, cooling and holding periods in the sterilisation of a batch fermentor medium for the destruction of B. stearothermophilus were: time to heat from 100 to 121°C = 30 min time to cool from 121 to 100 °C = 16 min time of holding at 121 °C = 12 min Calculate the destruction ratio (No/N) for the process. (ii) If the sterilisation were to be carried out continuously at 130 °C, and the heating and cooling characteristics were: time to heat from 100 to 130 °C = 2 min time to cool from 130 to 100 °C = 1 min what holding time would be required to achieve the same ratio of (No/N) as in section (1) above? State all the assumptions made in your calculations.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
See similar textbooks
icon
Related questions
Question
The following values were taken from the Richard's table on the thermal death kinetics of B. stearothermophi. cal/mol K): (A=4.9x1037min', E=67.48 kcal/mol, R=1.987 Temperature, °C rate The cumulative del factor Specific constant k, min death -1 V 120 1.47 7.25 121 1.83 9.08 125 4.35 22.08 130 12.55 65.10 (i) The time taken for heating, cooling and holding periods in the sterilisation of a batch fermentor medium for the destruction of B. stearothermophilus were: time to heat from 100 to 121°C = 30 min time to cool from 121 to 100 °C =16 min time of holding at 121 °C = 12 min Calculate the destruction ratio (No/N) for the process. (ii) If the sterilisation were to be carried out continuously at 130 °C, and the heating and cooling characteristics were: time to heat from 100 to 130 °C = 2 min time to cool from 130 to 100 °C = 1 min what holding time would be required to achieve the same ratio of (No/N) as in section (i) above? State all the assumptions made in your calculations.
Transcribed Image Text:The following values were taken from the Richard's table on the thermal death kinetics of B. stearothermophi. cal/mol K): (A=4.9x1037min', E=67.48 kcal/mol, R=1.987 Temperature, °C rate The cumulative del factor Specific constant k, min death -1 V 120 1.47 7.25 121 1.83 9.08 125 4.35 22.08 130 12.55 65.10 (i) The time taken for heating, cooling and holding periods in the sterilisation of a batch fermentor medium for the destruction of B. stearothermophilus were: time to heat from 100 to 121°C = 30 min time to cool from 121 to 100 °C =16 min time of holding at 121 °C = 12 min Calculate the destruction ratio (No/N) for the process. (ii) If the sterilisation were to be carried out continuously at 130 °C, and the heating and cooling characteristics were: time to heat from 100 to 130 °C = 2 min time to cool from 130 to 100 °C = 1 min what holding time would be required to achieve the same ratio of (No/N) as in section (i) above? State all the assumptions made in your calculations.
Expert Solution
steps

Step by step

Solved in 4 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education
SEE MORE TEXTBOOKS