Table 1 Levels and ranges of independent variables used for RSM-CCD
Independent variable | Coded Level | |||||
|---|---|---|---|---|---|---|
− α | − 1 | 0 | + 1 | + α | ||
Wheat bran (g%) | A | − 1.64 | 2.5 | 3.75 | 5 | 5.85 |
Sesame oil seed cake (g%) | B | − 0.31 | 1 | 2 | 3 | 3.68 |
Corn steep liquor (mL) | C | − 0.06 | 0.2 | 0.4 | 0.6 | 0.73 |