Table 1.
Experimental range of three variables at three levels in Box–Behnken design
| Variables | Coded levels | ||
|---|---|---|---|
| − 1 | 0 | 1 | |
| Temperature A (ºC) | 25 | 30 | 35 |
| Moisture B (%) | 56.50 | 64.97 | 68.87 |
| Incubation time C (days) | 5 | 10 | 15 |
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