Glucoamylase is produced by submerged fermentation of Aspergillus
niger followed by purification, formulation and drying. The product is
used in starch sugar processing, alcohol fermentation, distilling, brewing,
organic acid and antibiotics fermentation.
Glucoamylase breaks downα-1,4-glycosidic
bond of starch from non-reducing end to produce glucose and can also hydrolyze α-1,6 glycosidic bond slowly. At the branch of α-1,6 bond, it splits off α-1.6 bonds first
then α-1.4 bonds. Therefore, it can successively
liberate glucose unit of amylose from the non-reducing end to produce glucose.