Table 1 Selected process parameters and respective levels in the experimental design
| Sl. no. | Factors | Level 1 | Level 2 | Level 3 | Level 4 |
|---|---|---|---|---|---|
| 1 | Dextrose % (w/v) | 1 | 1.5 | 2 | 3 |
| 2 | NH4NO3 % (w/v) | 0.5 | 1 | 1.5 | 2 |
| 3 | Temperature (°C) | 22 | 24 | 26 | 28 |
| 4 | pH | 5.4 | 5.6 | 5.8 | 6.0 |
| 5 | Agitation (rpm) | 80 | 100 | 120 | 140 |