Abstract
Inhibitors of alpha glucosidase have potential use in the treatment of diabetes mellitus. The stem extract of Tinospora cordifolia was evaluated for inhibition of the enzyme. The extract was also found to inhibit the salivary and pancreatic amylase and therefore can effectively reduce an increase in postprandial glucose level. The crude ethyl acetate, dichloromethane (DCM), chloroform and hexane extracts of Tinospora cordifolia were studied. 15 mg of the DCM extract was most effective in that showed 100 % inhibition of the alpha glucosidase whereas salivary amylase was inhibited to the extent of 75 % and pancreatic amylase to 83 %. On giving a maltose load of 2mg / g along with 0.3 mg / g body weight of the DCM Tinospora stem extract a decrease was revealed in the hyperglycemic shoot up in normal and diabetic animals by 50 and 58 % respectively as compared to the controls. The extract was found to inhibit alpha glucosidase in a non-competitive manner.
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