What are the metabolic fates of pyruvate ethanol lactate?

Sourav PanDecember 14, 2024

Answered

Pyruvate can be metabolized into either ethanol or lactate, depending on the organism and the oxygen availability: 1) Alcoholic Fermentation: In yeast and some microorganisms, pyruvate is converted into ethanol and CO2 under anaerobic conditions, which regenerates NAD+ for glycolysis to continue. 2) Lactic Acid Fermentation: In muscle cells or certain bacteria, pyruvate is converted into lactate (lactic acid) to regenerate NAD+ under anaerobic conditions. Both metabolic pathways allow for continued ATP production through glycolysis when oxygen is limited or unavailable.

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