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Biology
Jenny Tate
19 August, 15:15
How does food concentration affect yeast activity
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Kiki
19 August, 15:44
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Yeast food is sugar and its concentration affect yeast's growth and activity. The process by which yeast metabolize sugar is called fermentation. A sugar concentration that is not very high (up to 3%), increase the fermentation rate. But, with over 3% sugar, the fermentation rate no longer increases. Above 6%, sugar actually decreases the rate because it begins to dehydrate the yeast cells. This effect is called crenation.
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