MICR 2420 Chapter Notes - Chapter UNIT 8 HALF: Flash Pasteurization, Microorganism, Germination

54 views10 pages

Document Summary

D-value: the time in minutes during which the number of specific microbial (cells or spores) population exposed to a specific temperature is reduced by 90% or 1 log. Expressed as dt = t min where t is the temperature (in (cid:176) c or (cid:176) f) and t is the time in minutes for 1 log reduction of the microbial strain used. Dt = t / (log10x log10y) where x and y, respectively, are the microbial populations numbers before and after exposure at t for t minutes. Graph example: figure 32. 1 on page 374. D value = 0. 25 minutes (can plot the data and find the slope (rise over run)or plug the numbers into the above formula (*ensure t is in minutes not seconds! i. e. t = 1 in this case)) Thermal death time: time in log that is necessary to completely destroy a specific number of microbial cells or spores in a population at a specific temperature.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions