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Topic: A interest question about cells!  (Read 6672 times)

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Offline Extra love

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A interest question about cells!
« on: March 03, 2008, 12:32:59 AM »
How do yeast cells make alcohol and cause bread to rise?

Offline kommyching

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Re: A interest question about cells!
« Reply #1 on: July 01, 2008, 09:57:57 AM »
In an oxygen-absent condition, yeast cells carry out anaerobic respiration .(which is also called alcoholic fermentation.)The equation is as follow:
glucose--> ethanol + carbon dioxide + energy
During baking, it's the CO2 which rises up the dough!!
Also, the ethanol produced is evaporated during baking, but you can still smell it if you are sensitive enough.

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