Table 4 Experimental design and results of CCD
Run | pH | Maltose | NaH2PO4 | Enzyme activity (U/ml) |
|---|---|---|---|---|
1 | 0 | 0 | 0 | 1028 |
2 | 0 | 0 | 0 | 1276 |
3 | 1 | −1 | −1 | 910 |
4 | 1.682 | 0 | 0 | 558 |
5 | 0 | −1.681 | 0 | 683 |
6 | 0 | 0 | 0 | 1000 |
7 | 0 | 0 | 1.682 | 699 |
8 | 0 | 0 | 0 | 1173 |
9 | −1 | −1 | −1 | 703 |
10 | −1 | −1 | 1 | 1186 |
11 | 1 | −1 | 1 | 531 |
12 | 0 | 0 | 0 | 1104 |
13 | −1 | 1 | −1 | 1573 |
14 | 1 | 1 | −1 | 765 |
15 | 1 | 1 | 1 | 462 |
16 | 0 | 0 | −1.682 | 897 |
17 | −1 | 1 | −1 | 966 |
18 | 0 | 0 | 0 | 1055 |
19 | −1.682 | 0 | 0 | 903 |
20 | 0 | 1.682 | 0 | 1345 |