| Run |
Coded setting levels |
Actual levels |
Endoxylanase activity (U.mL-1) |
| X1 |
X2 |
X1 |
X2 |
O |
P |
| 1 |
– 1 |
– 1 |
3.6 |
44 |
158.90 |
122.36 |
| 2 |
+ 1 |
– 1 |
6.4 |
44 |
144.54 |
108.42 |
| 3 |
– 1 |
+ 1 |
3.6 |
66 |
17.79 |
29.54 |
| 4 |
+ 1 |
+ 1 |
6.4 |
66 |
52.79 |
64.98 |
| 5 |
– 1.41 |
0 |
3.0 |
55 |
19.82 |
32.38 |
| 6 |
+ 1.41 |
0 |
7.0 |
55 |
35.59 |
47.53 |
| 7 |
0 |
– 1.41 |
5.0 |
40 |
125.70 |
172.21 |
| 8 |
0 |
+ 1.41 |
5.0 |
70 |
98.15 |
76.14 |
| 9 |
0 |
0 |
5.0 |
55 |
205.88 |
205.20 |
| 10 |
0 |
0 |
5.0 |
55 |
204.24 |
205.20 |
| 11 |
0 |
0 |
5.0 |
55 |
205.78 |
205.20 |
|
| Results are the mean of two experiments; O observed, P predict |
| Table 2: Values of independent variables (pH X1 and temperature X2), used in CCRD, showing the values observed and predicted by the mathematical model for endoxylanase activity characterization. |
