Microwave-Assisted Simultaneous Extraction of Luteolin and Apigenin from Tree Peony Pod and Evaluation of Its Antioxidant Activity

Table 1

Experimental design matrix to screen important variables for total extraction yield of luteolin and apigenin.

Run	Factor A; Liquid-solid ratio (mL/g)	Factor B; Microwave irradiation power (W)	Factor C; Microwave irradiation time (min)	Response; Total extraction yield (g/g)
1	8	230	8	228
2	8	120	10	163
3	8	230	8	231
4	8	120	6	150
5	6	230	6	179
6	6	120	8	117
7	10	120	8	175
8	10	230	10	251
9	6	230	10	187
10	8	230	8	231
11	8	385	10	182
12	8	230	8	230
13	8	385	6	175
14	10	230	6	239
15	8	230	8	230
16	6	385	8	138
17	10	385	8	204