Reaction catalyzed by glucan 1,4-alpha-glucosidase (3.2.1.3)
+
H2O
=
+
(alpha-D-glucopyranosyl-(1-4))n-alpha-D-glucopyranose
+
H2O
=
(alpha-D-glucopyranosyl-(1-4))n-1-alpha-D-glucopyranose
+
beta-D-glucopyranose