Levels | Ethanol concentration (%) | Solid/liquid ratio | Extraction time (h) | Extraction temperature (˚C) |
| A | B | C | D |
1 | 60% | 1:20 | 2.5 | 70 |
2 | 70% | 1:25 | 3.0 | 80 |
3 | 80% | 1:30 | 3.5 | 90 |