Polysaccharides of Scrophularia ningpoensis Hemsl.: Extraction, Antioxidant, and Anti-Inflammatory Evaluation

Table 4

Box-Behnken design with independent variables and response values.

Run	Independent variables			Response
	X1 (°C)	X2 (W)	X3 (min)	Experimental yield (%)	Predicted yield (%)
1	−1 (30)	−1 (285)	0 (25)	11.55 ± 0.99	11.68
2	1 (70)	−1 (285)	0 (25)	11.36 ± 1.01	11.43
3	−1 (30)	1 (665)	0 (25)	12.23 ± 1.11	12.16
4	1 (70)	1 (665)	0 (25)	12.82 ± 0.87	12.69
5	−1 (30)	0 (745)	−1 (15)	10.56 ± 0.69	10.73
6	1 (70)	0 (745)	−1 (15)	11.41 ± 0.88	11.64
7	−1 (30)	0 (745)	1 (35)	12.27 ± 1.00	12.04
8	1 (70)	0 (745)	1 (35)	11.59 ± 0.93	11.42
9	0 (50)	−1 (285)	−1 (15)	11.37 ± 1.12	11.07
10	0 (50)	1 (665)	−1 (15)	11.88 ± 0.77	11.78
11	0 (50)	−1 (285)	1 (35)	11.37 ± 0.83	11.47
12	0 (50)	1 (665)	1 (35)	12.19 ± 1.03	12.49
13	0 (50)	0 (745)	0 (25)	13.22 ± 1.10	13.38
14	0 (50)	0 (745)	0 (25)	13.71 ± 1.63	13.38
15	0 (50)	0 (745)	0 (25)	13.39 ± 0.92	13.38
16	0 (50)	0 (745)	0 (25)	13.49 ± 0.88	13.38
17	0 (50)	0 (745)	0 (25)	13.08 ± 1.12	13.378

Data show mean ± SD (n = 3).