Table 4.
Content of DDK and other major kavalactones in different extracting solvents prepared from kava roots (mg/g extract) [9]. * Structure of kavalactones divided by types A–D moieties.
| Kavalactones | Moieties * | Quantity (mg/g Extracting Solvents) | |||||
|---|---|---|---|---|---|---|---|
| Water | Acetone | Chloroform | Methanol | Ethanol | Hexane | ||
| Dihydromethysticin | A | 31.5 | 51.9 | 18.9 | 5.4 | 3.2 | 3.6 |
| 7,8-Dihydrokavain | A | 3.8 | 55.1 | 23.0 | 18.6 | 9.4 | 10.1 |
| Kavain | B | 36.9 | 41.5 | 14.7 | 6.9 | 3.3 | 4.7 |
| Methysticin | B | 0.0 | 5.5 | 14.4 | 0.0 | 0.0 | 1.2 |
| Desmethoxyyangonin | C | 6.7 | 21.0 | 7.6 | 4.3 | 2.1 | 2.7 |
| Yangonin | C | 6.8 | 84.1 | 22.9 | 5.7 | 2.4 | 2.1 |
| Dihydro-5,6-dehydrokavain | D | 22.9 | 27.1 | 4.7 | 4.7 | 2.1 | 1.9 |
| Total kavalactones | 108.6 | 286.2 | 106.2 | 45.6 | 22.5 | 26.3 | |