Alcohol dehydrogenase

Alcohol dehydrogenase (alcohol dehydrogenase, ADH) is a type of enzyme that catalyzes the oxidation-reduction reaction between alcohols and aldehydes. The enzyme plays an important role in yeast cells, where it is involved in the process of converting acetaldehyde into ethyl alcohol (ethanol). This reaction is important in the brewing of many alcoholic beverages, including sake, and affects both the production of alcohol and the quality of the finished product. The action of alcohol dehydrogenase improves fermentation efficiency and also contributes to the formation of the flavor and aroma of the sake.