Table 1. Factors and levels used for the 29-5 fractional factorial design to improve xylanolytic activity production by Aspergillus niger GS1, using SSF with supplemented ACS. |
Factor |
Level (g L-1) |
|
|
Low (-1) |
High (1) |
YE |
12 |
16 |
AS |
2.5 |
4.5 |
G |
6.0 |
9.0 |
SP |
3.0 |
4.0 |
MS |
0.30 |
0.70 |
IS |
0.10 |
0.30 |
PP |
2.0 |
4.0 |
ZS |
0.10 |
0.30 |
CUS |
0.008 |
0.016 |
YE: yeast extract; AS: (NH4)2SO4;
G: glucose; SP: Na2HPO4; MS: MgSO4•7H2O; |
|