Comparison of alcoholic fermentation and lactic acid fermentation
| Alcoholic fermentation |
Lactic acid fermentation |
| It produces alcohol and releases CO2 from pyruvic acid. |
It produces lactic acid and does not release CO2 from pyruvic acid. |
| It takes place in two steps. |
It takes place in a single step. |
| It involves two enzymes, pyruvate decarboxylase with Mg+ + and alcohol dehydrogenase. |
It uses one enzyme, lactate dehydrogenase with Zn+ +. |
| It forms acetaldehyde as an intermediate compound. |
Does not form an intermediate compound. |
| It commonly occurs in yeast. |
Occurs in bacteria, some fungi and vertebrate muscles. |
