Beta starch (β-starch)
βー澱粉べーたでんぷんBeta starch (β-starch) is a type of starch, and refers especially to starch in a state where it contains water. Starch is a polysaccharide found mainly in plants and is used chiefly as an energy source. Beta starch is an important component when yeast and koji mold ferment, and it may be used as a source of sugar in the sake brewing process. Beta starch plays an important role in producing the flavor and aroma of sake.