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Acetoin production variables, concentration, and S/N ratio.
| Batch number | Agitation (rpm) (A) |
Aeration rate (slpm) (B) |
Time (days) (C) |
pH (D) | Acetoin conc. (g/L) | S/N ratio |
|---|---|---|---|---|---|---|
| 1 | 150 | 1.5 | 5 | 7.0 | 20.32 | 26.16 |
| 2 | 300 | 1.0 | 5 | Uncontrolled | 2.81 | 8.97 |
| 3 | 400 | 1.0 | 2 | 7.0 | 2.57 | 8.20 |
| 4 | 300 | 1.5 | 2 | 6.5 | 63.43 | 36.05 |
| 5 | 300 | 0.5 | 4 | 7.0 | 18.14 | 25.17 |
| 6 | 150 | 0.5 | 2 | Uncontrolled | 17.39 | 24.81 |
| 7 | 150 | 1.0 | 4 | 6.5 | 34.45 | 30.74 |
| 8 | 400 | 0.5 | 5 | 6.5 | 0.80 | -1.94 |
| 9 | 400 | 1.5 | 4 | Uncontrolled | 2.57 | 8.20 |
