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Open Access Article
1 - In-vitro alpha amylase and alpha glucosidase inhibitory potential of leaf hexane, ethyl acetate and methanol fractions of Pterocarpus soyauxii Taub
Emmanuel Ojah Dorcas Olufunke MoronkolaDiabetes mellitus is a critical clinical condition characterized by hyperglycemia in which an accelerated amount of glucose circulates in the blood plasma. This work attempts to evaluate the α-amylase and α-glucosidase inhibitory activities of hexane, ethyl MoreDiabetes mellitus is a critical clinical condition characterized by hyperglycemia in which an accelerated amount of glucose circulates in the blood plasma. This work attempts to evaluate the α-amylase and α-glucosidase inhibitory activities of hexane, ethyl acetate and methanol fractions of Pterocarpus soyauxii at varying concentrations. 1.0 kg of milled leaf sample was first soaked in 5 L of methanol to obtain a percentage yield of 12%. The assay was carried out using standard procedures. The following IC50 values were obtained in the α-amylase inhibition: 0.0395, 0.05995, and 0.0509 mg/mL for hexane, ethyl acetate, and methanol, respectively compared to the standard drug acarbos (0.00812 mg/mL). A dose-dependent increase in percentage inhibition was obtained for α-glucosidase with IC50 values of 0.052, 0.059, and 0.065 mg/mL for respective fractions compared to the standard drug used (0.0017 mg/mL). The hexane fraction showed the greatest percentage inhibition for both α-amylase and α-glucosidase, while appreciable inhibition activity was observed in other fractions. The Nigerian Pterocarpus soyauxii has been identified for the first time as a very potent anti-diabetic agent useful in management of postprandial hyperglycemia and related therapeutic interventions. Manuscript profile
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