Mulberry (Morus albaL., family of Moraceae) leaf, a folk herb used
in China, contains appreciable active component with remarkable
hypoglycemic-like effects[12,13]. In addition, mulberry leaf or its
extract exhibits multiple therapeutic effects, including blood glucoselowering, insulin sensitivity-improving, and less adverse effects [14,
15]. Previous studies have focused on the hypoglycemic activities of
α-glycosidase inhibitors isolated from mulberry leaves, including 1-deoxynojirimycin (DNJ), 1,4-dideoxy -1,4-imino-D-arabinitol (DAB)