In simplest terms, both are ways to create energy.
Alcohol fermentation
1. Alcohol is first converted to acetaldehyde, a toxic and highly reactive substance.
2. Acetaldehyde is then rapidly converted to acetate and then acetyl CoA.
3. Acetyl CoA either enters the citric acid cycle or is made into fatty acids.
Glycolysis
The anaerobic metobolic pathway that breaks a glucose molecule into two molecules of pyruvic acid (or pyruvate) and yields two molecules of ATP (energy) and two molecules of NADH.
Once pyruvate loses CO2 it becomes Acetyl CoA.
Both fermentation and Glycolysis result in Acetyl CoA which goes to the citric acid cycle or Kreb's cycle which is an aerobic process resulting in lots of energy.
Reference
Karen D. Woodruff, Nutritionist II, personal interview, 08/November/2004.
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