Table 2 Factor and levels L9 (34) of orthogonal design test
Levels | A Maltose concentration (g/L) | B Feather concentration (g/L) | C Initial pH | D MgSO4 concentration (g/L) |
|---|---|---|---|---|
1 | 5 | 20 | 7.0 | 0.05 |
2 | 0 | 25 | 7.5 | 0.10 |
3 | 10 | 15 | 8.0 | 0.15 |
Levels | A Maltose concentration (g/L) | B Feather concentration (g/L) | C Initial pH | D MgSO4 concentration (g/L) |
|---|---|---|---|---|
1 | 5 | 20 | 7.0 | 0.05 |
2 | 0 | 25 | 7.5 | 0.10 |
3 | 10 | 15 | 8.0 | 0.15 |