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Experimental levels of independent nutrient variable and operating conditions with their corresponding levels
| Independent Variables (g/l) | Symbol | Levels | ||||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | |||
| Production Medium Optimization | Glucose | (X1) | 5 | 10 | 15 | 20 |
| Yeast Extract | (X 2) | 2 | 4 | 6 | 8 | |
| Cheese Whey | (X3) | 30 | 45 | 60 | 75 | |
| (NH4)2SO4 | (X4) | 5 | 10 | 15 | 20 | |
| Corn steep Liquor | (X5) | 5 | 10 | 15 | 20 | |
| Operating Conditions Optimization | pH (A) | (A) | 6.1 | 6.2 | 6.3 | 6.4 |
| Temperature°C (B) | (B) | 30 | 35 | 40 | 45 | |
