Yeast, Yeast Baby: Production of Ethanol by Yeast

Hannah Coplen, Cheyenne Allison, Dylan Asher, Miranda Kersten


In this experiment, we are testing the hypothesis that ethanol levels are lower at cooler temperatures, because of the process of cellular respiration. We tested the production of ethanol levels in chambers at 6, 12, 18, and 23 degrees Celsius. Using an ethanol probe, we measured the ethanol levels of the solution. As other results have shown yeast produces more ethanol in warmer temperatures than in freezing temperatures (Llaurado et al. 2002, Phimolsiripol et al. 2008). The results from our experiment supported our hypothesis.

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