Table 3.
Extraction yields of curdione, furanodienone, curcumol and germacrone from Curcuma wenyujin by ultrasonic extraction, SD extraction and maceration extraction
| Extraction methods | Extraction solvents | Extraction time | Curdione (mg g−1) | Furanodienone (mg g−1) | Curcumol (mg g−1) | Germacrone (mg g−1) | Total yield (mg g−1) |
|---|---|---|---|---|---|---|---|
| Ultrasonic extraction | 70 % ethanol | 20 min | 2.00 | 1.56 | 0.25 | 0.41 | 4.22 |
| SD extraction | Pure water | 20 min | 1.38 | 1.42 | 0.22 | 0.32 | 3.34 |
| Maceration extraction | 70 % ethanol | 20 min | 1.46 | 1.12 | 0.20 | 0.27 | 3.05 |
| SD extraction | Pure water | 1 h | 1.89 | 1.52 | 0.24 | 0.39 | 4.04 |
| Maceration extraction | 70 % ethanol | 2 h | 1.94 | 1.52 | 0.26 | 0.38 | 4.10 |
SD means steam distillation