Fig. 1

a In-vitro DPP-4 inhibition assay against ethanolic fruit extract of ethanol fruit extract of Withania coagulans (Equation- y = 7.8441ln(x) + 34.107, R2 = 0.9995, IC50 = 7.58 μg/ml). b In-vitro DPP-4 inhibition assay against sitagliptin (Equation- y = 11.953ln(x) + 46.305, R2 = 0.9671, IC50 = 1.36 μM)