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Fermentation uses yeast to convert glucose into ethanol and carbon dioxide.

C6H12O6 + Zymase (YEAST) → 2C2H5OH + 2CO2

Yeast contains the enzyme ZYMASE - this is the catalyst for the reaction. Fruits, vegetbales and grains all contain glucose, so they can all be used for fermentation.


  • Temperature around 30°
  • pH level between 6-7, as too much acid or alkali can stop the enzyme from reacting
  • Anaerobic conditions (no oxygen can be present as it turns ethanol into ethanoic acid)
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