I N biennial white-blossomed sweetclover (Melilotus alba Desr.) , the B/b allelic pair controls .&glucosidase activity ( SCHAEFFER, HASKINS and GORZ 1960; HASKINS and GORZ 1965). Homogenates of BB and Bb plants are high and iatermediate, respectively, in /3-glucosidase activity. No activity has been detected in homogenates of bb plants. The precise effect of the alleles B and b on the enzyme ha...

BACKGROUND Natural products have being used as potential inhibitors against carbohydrate-hydrolyzing enzymes to treat diabetes mellitus. Chinese dark tea has various interesting bioactivities. In this study, the active compounds from Qingzhuan dark tea were separated and their anti-diabetic activity was examined using an in vitro enzymatic model. METHODS The chloroform, ethyl acetate, n-butan...