Table 4.

Experimental design and results of BBD.

Run Order	X1	X2	X3	X4	Extraction Yield (mg/g)		Total Extraction Yield (mg/g)
					Coumarin	Flavone
1	0	1	0	1	16.03	11.07	14.04
2	1	0	0	−1	13.16	10.47	12.09
3	0	0	0	0	15.69	10.56	13.64
4	1	0	0	1	13.33	11.00	12.39
5	1	0	1	0	13.84	9.82	12.23
6	0	−1	1	0	16.59	10.66	14.22
7	−1	−1	0	0	13.05	7.96	11.01
8	0	0	1	1	17.93	11.56	15.38
9	0	0	0	0	16.03	9.87	13.57
10	−1	1	0	0	16.73	9.05	13.66
11	0	−1	0	−1	16.46	11.09	14.31
12	−1	0	−1	0	22.95	12.84	18.91
13	0	−1	−1	0	17.44	8.29	13.78
14	0	0	0	0	16.74	11.01	14.45
15	0	1	1	0	16.61	9.87	13.91
16	0	0	−1	−1	18.79	10.53	15.48
17	−1	0	1	0	14.89	9.00	12.54
18	0	1	0	−1	17.02	11.46	14.79
19	0	0	0	0	16.17	9.78	13.61
20	1	0	−1	0	19.35	12.36	16.55
21	−1	0	0	1	15.55	9.87	13.28
22	0	0	0	0	16.19	10.34	13.85
23	−1	0	0	−1	16.22	10.59	13.97
24	0	−1	0	1	14.52	9.11	12.35
25	0	1	−1	0	21.32	13.54	18.21
26	0	0	−1	1	20.23	10.97	16.52
27	0	0	1	−1	17.09	10.02	14.26
28	1	1	0	0	12.55	10.16	11.60
29	1	−1	0	0	12.56	9.61	11.38