Evaluation of α-Glucosidase Inhibitory Activity of Dichloromethane and Methanol Extracts of Croton bonplandianum Baill

Purpose: To evaluate the α-glucosidase inhibitory activity of Croton bonplandianum Baill as a probable remedy for the management of diabetes. Methods: Dichloromethane and methanol extracts were prepared and screened for their α-glucosidae inhibitory activity using standard in vitro α-glucosidae inhibition assay. Acarbose was used as positive control. Results: α-Glucosidae inhibition activity of dichloromethane extract was 97.89 % with 50 % inhibitory concentration (IC50) of 14.93 mg/ml, while the methanol extract was not active. Acarbose (reference) exhibited 92.23 % inhibition with IC50 of 38.25 mg/ml. Conclusion: The plant contains bioactive compounds with enzyme-inhibiting activity, and thus lends some support for the traditional use of this herb in the management of diabetes. Dichloromethan extract has higher α-glucosidase inhibition activity than the methanol extract. However, further investigation of the plant, including identification of its active components are required.