Table 1.
Values of coded levels used for the experimental design
| Independent variables | Code | Actual levels of coded factors | ||||
|---|---|---|---|---|---|---|
| − 1.414 | − 1 | 0 | 1 | 1.414 | ||
| Moisture content (%) | A | 66.0 | 70 | 80 | 90 | 94.0 |
| Incubation time (days) | B | 4.0 | 4 | 6 | 8 | 9.0 |
| pH | C | 5.0 | 5 | 6.5 | 8 | 8.6 |
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