Antigout Effects of Plantago asiatica: Xanthine Oxidase Inhibitory Activities Assessed by Electrochemical Biosensing Method

Figure 4

Effects of the representative electron transfer signal blocking activities of Plantaginis Semen on XOD/DCNTs/GCE. (a) In the presence of xanthine with different concentrations of the Plantaginis Semen extract. The lines to are XOD/DCNTs/GCE in the presence of 28 μg⋅mL⁻¹ xanthine and 0, 36, 72, 108, 144, 180, and 216 μg⋅mL⁻¹ of the extract, respectively. (b) In the absence of xanthine with different concentrations of the extract. The lines to are XOD/DCNTs/GCE in the presence of 0, 36, 72, 108, 144, 180, and 216 μg⋅mL⁻¹ of the extract, respectively. (c) Relationship between the inhibition rate and Plantaginis Semen extract concentration. (d) Relationship between the oxidation and reduction current and Plantaginis Semen extract concentration. , , and , compared with control.

(a)

(b)

(c)

(d)