Selected Enzyme Inhibitory Effects of Euphorbia characias Extracts

Figure 1

Inhibition of -amylase, -glycosidase, and xanthine oxidase enzymatic activities by E. characias ethanol extracts. Reaction conditions are reported in Materials and Methods. (a) Lineweaver-Burk plot for inhibition of α-amylase at different extract concentrations (μg/mL). Leaves: 0 (●), 0.015 (○), 0.025 (▲), and 0.03 (∆); flowers: 0 (●), 0.025 (○), 0.03 (▲), and 0.05 (∆). (b) Lineweaver-Burk plot for inhibition of α-glucosidase at different extract concentrations (μg/mL): 0 (●), 0.5 (○), 0.75 (▲), and 1.0 (∆). (c) Lineweaver-Burk plot for inhibition of xanthine oxidase at different extract concentrations (μg/mL): 0 (●), 20 (○), 40 (▲), and 60 (∆).

(a)

(b)

(c)