Galactose

Galactose is a monosaccharide (simple sugar) with the molecular formula C6H12O6. It shares the same molecular formula as glucose, but its structure differs, so it shows different properties. In sake brewing, the ability of sake yeast to ferment galactose is important. This fermentation process is one factor that influences the flavor and aroma of sake. The fermentability of galactose by yeast contributes to the quality of sake and the diversity of its taste.