Beta-amylase is an enzyme that plays a crucial role in carbohydrate metabolism, specifically in the breakdown or hydrolysis of starch molecules. It catalyzes the cleavage of α-1,4-glycosidic bonds in the starch, releasing maltose and a smaller unit called a limit dextrin.
This enzyme is produced in various organisms, including plants, bacteria, and fungi, and is commonly used in industries such as brewing, baking, and biofuel production.
In brewing, beta-amylase plays a vital role in the conversion of starches in malted grains to fermentable sugars during the mashing process, contributing to the production of alcohol by yeast. In baking, it helps to break down starches into sugars, contributing to the browning and flavor development of the baked goods. In biofuel production, beta-amylase is utilized in the hydrolysis of starch-based biomass to obtain fermentable sugars used for ethanol production.