Table 1.

Experimental design matrix with numerical factors consisting of 20 experiments and the effects of factors on responses

Run	Microwave power density (X1) (kWL−1)	Solid/Solvent ratio (X2) (gL−1)	Extraction Time (X3) (s)	TPC (mg GAEg−1DL)	NC (mg Ng−1DL)
5	0.2	8	30	8.484	4.10
2	1.4	8	30	14.379	3.45
4	0.2	20	30	4.219	4.55
8	1.4	20	30	4.211	5.66
1	0.2	8	240	11.679	5.33
16	1.4	8	240	22.863	7.40
17	0.2	20	240	6.822	10.05
7	1.4	20	240	14.994	13.12
19	0.2	14	135	7.381	9.35
14	1.4	14	135	15.047	9.89
18	0.8	8	135	20.214	7.40
11	0.8	20	135	10.066	10.60
3	0.8	14	30	8.005	5.01
10	0.8	14	240	11.996	8.89
15	0.8	14	135	11.850	9.65
12	0.8	14	135	13.057	9.33
20	0.8	14	135	12.757	9.25
9	0.8	14	135	12.854	9.85
13	0.8	14	135	13.143	9.57
6	0.8	14	135	13.579	9.69