Ethanol Fermentation

Pyruvate

Ethanol/Alchol Fermentation

Fundamentals:

• Yeast and several other microorganisms

General Summary:

• GLC + 2Pi + 2ADP + 2H --> 2Ethanol + 2CO2 + 2ATP + 2H2O
  • From glycolysis to ethanol fermentation
• Pyruvate decarboxylation into Acetylaldehyde
• Acetaldehyde into Ethanol

Steps

• Pyruvate + H -(Pyruvate Decarboxylase)-> Acetylaldehyde + CO2 - Pyruvate Decarboxyase
• Acetylaldehyde + NADH <-(Alcohol Dehydrogenase)-> Ethanol + NAD + H - Alcohol Dehydrogenase
  • NADH produced in GAP is consumed in the reduction of Acetaldehyde --> Ethanol