Optimization of Microwave-Assisted Extraction Saponins from Sapindus mukorossi Pericarps and an Evaluation of Their Inhibitory Activity on Xanthine Oxidase

Figure 2

Response surface and contour plots for the interaction influences of parameters on the saponins extraction yield. (a) Interactions of microwave time and microwave power (1 g samples sieved with 80–100 mesh size particles were mixed with 15 mL 40% (v/v) of ethanol water solution and soaked for 3 h then extracted by MAE). (b) Solvent-solid ratio and microwave power (1 g sample sieved with 80–100 mesh size particles was mixed with 40% (v/v) of ethanol water solution and soaked for 3 h then extracted for 10 min by MAE). (c) Solvent-solid ratio and microwave time (1 g sample sieved with 80–100 mesh size particles was mixed with 40% (v/v) of ethanol water solution and soaked for 3 h then extracted with 425 W by MAE).

(a)

(b)

(c)