Table 2.
Representative terpenoids identified by GC-QTOF-MS from olive leaves extract obtained by scCO2, showing their molecular formula, molecular weight, number of rings, main functional groups in the molecule, Hansen Solubility Parameters (HSPs: contributions for dispersion (δD), polar (δP), hydrogen bond (δH), and total (δT)) and octanol–water partition coefficient (log(Kow)).
| Family | Compound Name | RT (min) | Formula | MW (g/mol) | Number of Rings | Functional Group |
δD | δP | δH | δT | log(Kow) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Monoterpenoid | Cymenol | 9.89 | C10H14O | 150.22 | 1 | -OH | 18 | 4.9 | 9.1 | 20.8 | 2.5 |
| Monoterpenoid | Thymol | 10.01 | C10H14O | 150.22 | 1 | -OH | 17.8 | 4 | 7.2 | 19.6 | 3.37 |
| Sesquiterpenoid | Germacrene | 28.59 | C15H24 | 204.35 | 2 | 17 | 1.6 | 2.6 | 17.3 | 6.44 | |
| Diterpenoid | Hexahydrofarnesyl acetone | 16.43 | C18H36O | 268.5 | 0 | -CO | 16 | 3.2 | 2 | 16.4 | 7.02 |
| Ditepenoid | α-Tocopherol (Vit E) | 26.92 | C29H50O2 | 430.7 | 1, 1-O | Phenol | 16.9 | 1.5 | 3.6 | 17.3 | 11.06 |
| Ditepenoid | Tocospiro A | 25.13 | C29H50O4 | 462.7 | 1, 1-O | -OH, -CO | 16.5 | 5.1 | 3.8 | 17.7 | 7.39 |
| Triterpenoid | Uvaol | 31.49 | C30H50O2 | 442.7 | 5 | -CH2OH, -OH, | 17.9 | 2.7 | 5.6 | 19 | 9.22 |
| Triterpenoid | β-Amyrin | 28.67 | C30H50O | 426.7 | 5 | -OH | 17.7 | 1.7 | 2.9 | 18.1 | 11.04 |