Table 3.
Coded and real values for the Box-Behnken design
| Factor |
Variable
|
Level of variable | ||
|---|---|---|---|---|
| -1 | 0 | +1 | ||
| Selenium concentration | A | 5 mg/L | 15 | 25 mg/L |
| Temperature | B | 25 °C | 28 | 31 °C |
| Glucose concentration | D | 15 g/L | 20 | 25 g/L |
| Aeration | F | 150 rpm | 200 | 250 rpm |
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