TEMPERATURE - TEMPERATURE

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TEMPERATURE Every bacterial species has an optimum (ideal) growth temperature, at which it grows best and  numbers increase at the fastest possible rate.  Minimum growth temperature—the lowest temperature at which the species can grow at all Maximum growth temperature –the highest temperature at which the species can grow at all The optimum growth temperature is usually very close to the maximum. Microbes are classified into 3 groups, based on preferred growth temperature: 1 . Psychrophiles  (cold-loving microbes)—these can grow at 0 o  C. However, they vary in their  optimum growth temperature.  a. One group prefers 15 o  C and cannot grow in temperatures much higher than that. b. Another group prefers 20 - 30 o  C. These are called psychrotrophs or facultative psychropyles  and often cause food spoilage in refrigerators over days of time.  2.  Mesophiles 
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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