| Model item | Sum of squares | Df | F | F-value | Significance |
| Rotational speed | 6.289 | 2 | 285.864 | 19.000 | ** |
| Temperature | 0.866 | 2 | 39.364 | 19.000 | * |
| pH | 0.631 | 2 | 28.682 | 19.000 | * |
| Inoculation amount | 0.022 | 2 | 1.000 | 19.000 |
|
| Deviation | 0.02 | 2 |
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