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Experimental range, coded values and level of independent variables for the optimization of ligninase production.
| Factors | Symbol | Coded Level |
||
|---|---|---|---|---|
| -1 | 0 | +1 | ||
| Moisture Content (%) | X1 | 50 | 60 | 70 |
| pH | X2 | 4.0 | 4.5 | 5.0 |
| Inoculum Size (ml) | X3 | 2.0 | 3.0 | 4.0 |
| Incubation time (days) | X4 | 5 | 6 | 7 |
