Table 2 Plackett–Burman experimental design matrix with the observed response (chitinase activity)
Run | Variables | Chitinase activity (U/ml) | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | ||
1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 7.476 |
2 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 2.239 |
3 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | 7.053 |
4 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | 7.043 |
5 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 6.544 |
6 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1.799 |
7 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1.973 |
8 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1.116 |
9 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | 7.049 |
10 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 3.244 |
11 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | 1.861 |
12 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 6.527 |
13 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | −1 | 1.934 |
14 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | −1 | 7.033 |
15 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | −1 | 1.986 |
16 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 1 | 1.924 |
17 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 1 | 2.042 |
18 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | −1 | 2.062 |
19 | −1 | 1 | 1 | −1 | −1 | −1 | −1 | 1 | −1 | 1 | −1 | 1 | 1 | 1 | 1 | −1 | −1 | 1 | 1 | 6.639 |
20 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | −1 | 2.134 |