Microwave-Assisted Method for Simultaneous Hydrolysis and Extraction for Preparation of Geniposidic Acid from Eucommia ulmoides Bark Using Basic Imidazolide Ionic Liquid

Figure 4

Three-dimensional response surface plots for the effect of independent variables on yield of geniposidic acid: (a) microwave irradiation time (min) and liquid-solid ratio (mL/g); (b) microwave irradiation time (min) and microwave irradiation power (W); (c) microwave irradiation power (W) and liquid-solid ratio (mL/g).

(a)

(b)

(c)