Table 2.

Response surface design and test results of corn sheath AX extracted by complex enzyme

Run	X1 pH	X2 DSDPB-liquid ratio	X3 extraction time/h	X4 extraction temperature/°C	X5 double-enzyme dose/U/g	AX context/%	Yield of AX/%
1	− 1	1	1	− 1	1	75.23
2	1	1	− 1	− 1	− 1	74.76	38.09
3	− 1	1	− 1	1	− 1	74.75	29.93
4	0	0	0	0	0	76.13	39.55
5	1	− 1	1	1	− 1	73.72	33.65
6	− 2	0	0	0	0	76.13	38.52
7	1	− 1	− 1	1	1	72.59	35.84
8	1	− 1	1	− 1	− 1	75.82	36.99
9	− 1	− 1	− 1	1	− 1	75.40	30.61
10	0	0	0	0	0	76.06	40.52
11	0	0	0	0	0	76.19	40.18
12	− 1	− 1	1	1	− 1	76.02	31.93
13	0	0	2	0	0	75.53	41.48
14	0	0	0	0	0	75.77	40.51
15	0	0	0	0	0	76.23	39.46
16	1	1	− 1	1	− 1	74.00	33.30
17	0	0	0	0	0	76.98	38.90
18	− 1	1	1	1	1	73.82	35.77
19	− 1	− 1	− 1	− 1	1	76.09	40.03
20	1	− 1	1	− 1	1	74.44	40.86
21	0	0	0	2	0	71.98	23.37
22	− 1	− 1	1	1	1	75.21	34.74
23	0	0	0	0	2	74.77	44.53
24	0	0	0	− 2	0	76.32	39.55
25	1	1	1	− 1	1	73.91	43.78
26	− 1	− 1	− 1	1	1	75.57	35.44
27	− 1	1	− 1	− 1	− 1	76.91	40.34
28	1	1	1	1	1	73.86	40.05
29	1	− 1	1	1	1	74.14	36.79
30	2	0	0	0	0	73.55	38.19
31	0	0	0	0	0	76.43	39.56
32	0	0	0	0	0	76.31	39.79
33	0	0	0	0	− 2	76.53	36.23
34	1	1	1	1	− 1	73.83	35.14
35	0	− 2	0	0	0	75.80	36.33
36	1	− 1	− 1	− 1	− 1	75.56	34.40
37	− 1	1	1	− 1	− 1	76.61	39.78
38	0	0	− 2	0	0	75.42	37.99
39	− 1	1	1	1	− 1	74.25	29.63
40	0	2	0	0	0	75.34	41.47
41	1	1	1	− 1	− 1	74.90	40.07
42	1	− 1	− 1	1	− 1	73.07	32.08
43	1	− 1	− 1	− 1	1	74.71	38.16
44	− 1	1	− 1	1	1	74.32	35.74
45	− 1	1	− 1	− 1	1	75.82	44.17
46	− 1	− 1	1	− 1	− 1	76.86	38.45
47	1	1	− 1	1	1	72.99	38.40
48	1	1	− 1	− 1	1	74.06	42.06
49	− 1	− 1	− 1	− 1	− 1	77.00	36.94
50	− 1	− 1	1	− 1	1	76.03	42.54