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Re:Temp. effects on yeast production
>Obviously CO2 production rises with increased temperature (in a yeast
>mixture).
As a general rule of thumb, enzymatic reactions double their rates for
every ten degree (centigrade) increase in temperature. Thus, you
could expect to go from 1 bubble/second at 20C to 2 bubbles/second at
30C, given that nothing else is limiting the reaction rate.
Enzymes are labile at extreme temperatures, but this rule of thumb
should hold for normal room temperatures. I do not know the upper
temperature limit for yeast, but I would imagine anything over 50C
would result in death. Frozen yeast aren't too productive, either.