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Old 04-18-2005, 06:34 PM   #11
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Warm might indeed be better, but I also think light is not good, if you are using clear soda bottles. Warm and dark is the ticket.
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Old 04-18-2005, 06:36 PM   #12
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so under the tank where its dark is good ... but if it were a little warmer it'd be better huh?

Well, I'll try to keep note of the temps in my house as it warms up here for spring and see if I notice any correlation to the CO2 output.
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Old 04-19-2005, 03:38 PM   #13
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Yeah, yeast is very responsive to higher temperatures. You can look up this paper:

Effects of fermentation temperature on the strain population of Saccharomyces cerevisiae. Torija MJ, Rozes N, Poblet M, Guillamon JM, Mas A.
Int J Food Microbiol. 2003 Jan 15;80(1):47-53.

I copied a link from one of their tables below:

[img] http://www.sciencedirect.com/cache/M...=dGLbVtz-zSkWW [/img]

This shows that with increasing temperature, you have a much shorter population density peak (2 days at 35 degrees C vs 6 days at 15C), and a correspondingly higher maximal fermentation rate (70g sugar per day at 35C vs 10g sugar per day at 15C.).

So yeah, temperature is highly correlated with CO2 evolution rates in yeast.

Will
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