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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Yeast converts fermentable sugars into ethanol and CO₂ under anaerobic conditions.
Origin: Mesopotamians, Egyptians, Chinese (c. 6000 BCE to present) — Mesopotamia, Egypt, China
See full technique reference →The process begins with glycolysis, producing pyruvate, which is decarboxylated to acetaldehyde by pyruvate decarboxylase. Acetaldehyde is then reduced to ethanol by alcohol dehydrogenase, releasing CO₂ as a by‑product. Temperature, pH, oxygen, and yeast strain selection critically influence yield and flavor.
Primary Reaction
glucose → pyruvate → acetaldehyde → ethanol
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