Table 2.
Chemical composition of the essential oils
| RIa | Compounds | C. patens | U. pierreanum | ||
|---|---|---|---|---|---|
| Cp1 (%) | Cp2 (%) | Up1 (%) | Up2 (%) | ||
| 913 | α-Thujene | 0.16 | |||
| 920 | α-Pinene | 0.12 | 22.80 | ||
| 933 | Camphene | 0.10 | 0.50 | ||
| 955 | Sabinene | 0.10 | |||
| 959 | β-Pinene | 0.28 | 0.10 | 23.00 | |
| 981 | Myrcene | 2.00 | 2.50 | ||
| 999 | δ-3-Carene | 0.15 | |||
| 1006 | α-Terpinene | 0.10 | |||
| 1011 | p-Cymene | 0.22 | 0.80 | ||
| 1014 | Limonene | 1.15 | 8.50 | ||
| 1028 | (Z)-β-ocimene | 0.10 | |||
| 1038 | (E)-β-ocimene | 4.00 | |||
| 1058 | γ-Terpinene | 0.24 | 0.21 | ||
| 1068 | Terpinolene | 0.10 | |||
| 1134 | Neo-allo-ocimene | 0.10 | |||
| 1072 | Linalool | 0.65 | 0.22 | 0.80 | |
| 1156 | Borneol | 0.10 | |||
| 1161 | Terpinen-4-ol | 0.10 | 0.30 | ||
| 1172 | α-Terpineol | 0.10 | 4.00 | ||
| 1220 | Geraniol | 0.10 | |||
| 1334 | δ-Elemene | 2.44 | 0.86 | ||
| 1347 | α-Cubebene | 1.33 | 0.10 | 0.10 | |
| 1356 | α-Ylangene | 0.42 | 0.11 | ||
| 1361 | α-Copaene | 16.90 | 1.12 | 5.70 | 7.90 |
| 1374 | β-Elemene | 2.44 | 1.57 | 0.10 | 0.10 |
| 1387 | Cyperene | 1.66 | |||
| 1396 | Z-α-bergamotene | 0.43 | 0.10 | 5.20 | 0.88 |
| 1397 | α-Cedrene | 1.00 | 0.10 | ||
| 1411 | α-Santalene | 4.50 | |||
| 1413 | β-Caryophyllene | 2.58 | 27.54 | 0.90 | 0.10 |
| 1417 | γ-Elemene + β-cubebene | 2.91 | 3.2 | ||
| 1423 | (E)-α-bergamotene | 1.10 | 0.10 | 9.00 | 2.50 |
| 1427 | E-β-farnesene | 0.80 | 0.20 | 3.00 | 1.70 |
| 1453 | α-Humulene | 0.90 | 2.77 | 0.10 | |
| 1455 | Alloaromadendrene | 0.80 | 1.27 | ||
| 1455 | γ-Muurolene | 1.80 | 0.42 | ||
| 1458 | α-Farnesene | 5.70 | 1.80 | ||
| 1461 | Germacrene D | 3.80 | 16.14 | ||
| 1472 | α-Muurolene | 1.19 | 0.70 | ||
| 1474 | Ar-curcumene | 8.60 | 0.80 | ||
| 1487 | β-Bisabolene | 0.94 | 1.00 | 28.20 | 4.30 |
| 1490 | Z-γ-bisabolene | 0.87 | 0.80 | ||
| 1492 | γ-Cadinene | 0.33 | 0.70 | ||
| 1494 | Bicyclogermacrene | 2.81 | 4.23 | ||
| 1505 | δ-Cadinene | 28.70 | 1.60 | 0.70 | 2.60 |
| 1506 | Cadina-1,4-diene | 0.70 | |||
| 1513 | (Z)-calamenene | 3.00 | 0.30 | ||
| 1514 | (E,Z)-germacrene B | 4.91 | 1.97 | ||
| 1514 | β-Sesquiphellandrene | 5.30 | |||
| 1517 | E-calamenene | 0.70 | |||
| 1538 | Germacrene B | 7.40 | 15.98 | ||
| 1537 | (E)-nerolidol | 0.80 | 1.22 | ||
| 1551 | Spathulenol | 2.52 | 0.78 | ||
| 1555 | Caryophyllene oxide | 2.90 | 3.80 | 1.20 | 0.10 |
| 1568 | γ-Eudesmol | 1.00 | 0.50 | ||
| 1595 | Cubenol | 2.46 | 0.43 | ||
| 1602 | Epi-α-cadinol | 0.10 | 0.10 | ||
| 1607 | Epi-α-muurolol | 1.92 | 2.39 | ||
| 1638 | α-Cadinol | 0.30 | 2.42 | 0.70 | 0.10 |
| 1666 | β-Bosabolol | 2.30 | 0.20 | ||
| 1674 | α-Bisabolol | 11.50 | 4.56 | ||
| 1680 | E,E-farnesol | 1.22 | |||
| Monoterpene hydrocarbons | 0.52 | 4.41 | 62.40 | ||
| Oxygenated monoterpenes | 0.65 | 0.42 | 5.30 | ||
| Sesquiterpene hydrocarbons | 87.46 | 83.18 | 81.70 | 23.10 | |
| Oxygenated sesquiterpenes | 10.10 | 9.82 | 17.60 | 8.00 | |
| Total | 98.73 | 97.83 | 99.30 | 98.80 | |
Components were identified based on RI and GC/MS data and listed according to their order of elution on DB1 (50 m)
Cp1 stem bark oil of C. patens, Cp2 leaf oil of C. patens, Up1 stem bark oil of U. pierreanum, Up2 leaf oil of U. pierreanum, % percent peak area of essential oil constituents
aRetention indices