Table 1 Experimental range and level of the process variables for L-asparaginase production
Process variables | Symbol | Low (−1) | Middle (0) | High (+1) |
|---|---|---|---|---|
Amount of substrate (g) | A | 4 | 6 | 8 |
Initial moisture content (%) | B | 30 | 40 | 50 |
Temperature (°C) | C | 30 | 35 | 40 |
pH | D | 6 | 7 | 8 |