Table 5.
Optimal MAE conditions for tobacco leaves and tobacco waste obtained by response surface methodology.
| Leaves | Scrap | Dust | Midrib | |
|---|---|---|---|---|
| Criteria: Maximum extraction yield with maximum nicotine content | ||||
| Temperature (°C) | 80.0 | 80.0 | 80.31 | 80.0 |
| Time (min) | 5.0 | 5.0 | 5.0 | 25.0 |
| Solvent/solid ratio (mL/g) | 26.1 | 29.8 | 30.01 | 30.00 |
| Predicted yield value (%) | 68.624 | 49.868 | 48.888 | 53.455 |
| Predicted nicotine value (%) | 5.638 | 3.268 | 4.058 | 1.603 |
| Criteria: Maximum extraction yield with minimum nicotine content | ||||
| Temperature (°C) | 120.0 | 120.0 | 119.3 | 120.0 |
| Time (min) | 25.0 | 25.0 | 19.4 | 11.2 |
| Solvent/solid ratio (mL/g) | 10.0 | 19.1 | 30.0 | 30.0 |
| Predicted yield value (%) | 66.123 | 68.315 | 58.233 | 55.961 |
| Predicted nicotine value (%) | 2.311 | 1.870 | 2.628 | 1.045 |