further confirmed in the concentration-dependent studies. In these experiments, extracts of curry leaves, peppermint, scallion and coriander various concentrations (15 mg/mL, 10 mg/mL, 7.5 mg/mL, 5.0 mg/mL and 2.5 mg/mL) were incubated with BSA and glucose at 37 ul for two weeks. Thereafter, the reaction was stopped as described above.