Table 2.

CCD with responses of the dependent variables to extraction conditions.

Run	Power A (W)	Temperature B (℃)	Solid-liquid C (1:X)	Time D (min)	TPC (mg GAE/g PNs)
1	1(4 0 0)	−1(35)	1(20)	1(25)	36.98
2	−2(2 5 0)	0(45)	0(15)	0(20)	32.72
3	−1(3 0 0)	−1	1	−1(15)	34.72
4	−1	−1	1	1	37.02
5	0(3 5 0)	0	0	0	40.37
6	−1	−1	−1(10)	−1	31.98
7	0	2(65)	0	0	36.44
8	1	−1	−1	1	34.86
9	−1	1	1	−1	35.78
10	1	1	1	1	37.66
11	0	−2(25)	0	0	33.8
12	1	1	−1	−1	32.53
13	−1	1	−1	−1	33.27
14	0	0	0	−2(10)	32.09
15	0	0	0	0	40.1
16	0	0	0	0	40.83
17	1	−1	−1	−1	30.92
18	0	0	0	2(30)	37.95
19	0	0	0	0	38.73
20	0	0	−2(5)	0	35.61
21	−1	−1	−1	1	34.08
22	1	−1	1	−1	32.84
23	−1	1	−1	1	34.66
24	2(4 5 0)	0	0	0	31.95
25	−1	1	1	1	38.07
26	1	1	−1	1	35.76
27	0	0	0	0	39.16
28	0	0	2(25)	0	40.66
29	0	0	0	0	39.45
30	1	1	1	−1	33.81