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Yeast fermentation at different pH levels

Demonstrate how environmental pH levels can affect the growth rate of yeast. Students can explore pH scales and how this relates to the process of fermentation, which is the process in which microorganisms (like yeast) break down sugars into energy sources for its own use. Changes in pH can ultimately affect the growth ability of yeast. Baker’s yeast thrives in a pH range of 4 to 6, and growth can be inhibited in pH levels outside this range.