Table 2.
Terpene profile of hemp essential oil.
| No. | Compound | LRI a | LRI b | Relative Abundance (%) c |
|---|---|---|---|---|
| 1 | α-Pinene | 936 | 936 | 2.80 ± 0.04 |
| 2 | β-Pinene | 980 | 978 | 0.73 ± 0.00 |
| 3 | β-Myrcene * | 989 | 989 | 1.09 ± 0.02 |
| 4 | Limonene * | 1032 | 1033 | 0.24 ± 0.00 |
| 5 | Eugenol | 1035 | 1034 | 0.41 ± 0.01 |
| 6 | Linalool * | 1099 | 1103 | 0.55 ± 0.01 |
| 7 | Fenchyl alcohol | 1124 | 1117 | 0.32 ± 0.01 |
| 8 | cis-p-Menth-2-en-1-ol | 1131 | 1121 | 0.24 ± 0.00 |
| 9 | trans-p-Menth-2-en-1-ol | 1140 | 1140 | 0.32 ± 0.01 |
| 10 | Camphor | 1150 | 1148 | 0.12 ± 0.00 |
| 11 | Borneol | 1178 | 1177 | 0.24 ± 0.01 |
| 12 | Terpinen-4-ol | 1185 | 1180 | 0.13 ± 0.01 |
| 13 | p-Cymen-8-ol | 1199 | 1185 | 0.49 ± 0.02 |
| 14 | α-Terpineol | 1198 | 1198 | 0.46 ± 0.05 |
| 15 | Copaene | 1376 | 1378 | 0.20 ± 0.01 |
| 16 | (Z)-β-Caryophyllene | 1414 | 1409 | 0.20 ± 0.01 |
| 17 | γ-Elemene | 1418 | 1430 | 0.33 ± 0.01 |
| 18 | (E)-β-Caryophyllene * | 1431 | 1428 | 17.17 ± 0.24 |
| 19 | α-Bergamotene | 1438 | 1435 | 1.87 ± 0.03 |
| 20 | allo-Aromadendrene | 1443 | 1444 | 0.49 ± 0.01 |
| 21 | (E)-β-Farnesene | 1453 | 1456 | 1.59 ± 0.03 |
| 22 | α-Humulene * | 1467 | 1458 | 6.12 ± 0.53 |
| 23 | γ-Muurolene | 1472 | 1476 | 0.25 ± 0.02 |
| 24 | α-Guaiene | 1482 | 1499 | 0.34 ± 0.06 |
| 25 | Selina-4(14),7(11)-diene | 1485 | 1497 | 0.60 ± 0.08 |
| 26 | β-Selinene | 1495 | 1486 | 0.80 ± 0.03 |
| 27 | α-Selinene | 1501 | 1497 | 2.85 ± 0.01 |
| 28 | β-Bisabolene | 1511 | 1509 | 5.14 ± 0.05 |
| 29 | δ-Cadinene | 1520 | 1519 | 0.73 ± 0.02 |
| 30 | γ-Patchoulene | 1525 | 1522 | 0.47 ± 0.01 |
| 31 | β-Sesquiphellandrene | 1530 | 1525 | 1.06 ± 0.03 |
| 32 | α-Cadinene | 1544 | 1530 | 1.48 ± 0.03 |
| 33 | Selina-3,7(11)-diene | 1549 | 1542 | 0.76 ± 0.02 |
| 34 | Selina-4(15),7(11)-diene | 1554 | 1532 | 0.38 ± 0.01 |
| 35 | Germancrene B | 1563 | 1157 | 1.48 ± 0.03 |
| 36 | (E)-Nerolidol | 1568 | 1560 | 0.15 ± 0.01 |
| 37 | Spathulenol | 1575 | 1573 | 0.42 ± 0.02 |
| 38 | β-Caryophyllene oxide * | 1597 | 1581 | 8.22 ± 0.13 |
| 39 | Aromadendrene oxide | 1606 | 1650 | 2.87 ± 0.04 |
| 40 | cis-(Z)-α-Bisabolene epoxide | 1613 | 1619 | 0.85 ± 0.01 |
| 41 | Humulene epoxide | 1619 | 1610 | 0.41 ± 0.02 |
| 42 | Cubenol | 1625 | 1614 | 2.70 ± 0.04 |
| 43 | γ-Eudesmol | 1638 | 1642 | 4.02 ± 0.06 |
| 44 | Caryophylla-4(12),8(13)-dien-5α-ol | 1648 | 1640 | 2.29 ± 0.02 |
| 45 | Caryophylla-4(12),8(13)-dien-5β-ol | 1651 | 1634 | 1.70 ± 0.08 |
| 46 | α-Cadinol | 1657 | 1647 | 0.53 ± 0.03 |
| 47 | β-Eudesmol | 1670 | 1651 | 5.79 ± 0.05 |
| 48 | epi-α-Bisabolol | 1677 | 1682 | 3.49 ± 0.07 |
| 49 | α-Bisabolol * | 1692 | 1685 | 8.20 ± 0.12 |
| 50 | Cannabidiol * | – | – | 1.75 ± 0.03 |
| Total | 95.82 ± 1.35 | |||
| Hydrocarbon monoterpenes | 4.86 ± 0.02 | |||
| Oxygenated monoterpenes | 3.33 ± 0.10 | |||
| Hydrocarbon sesquiterpenes | 44.33 ± 0.62 | |||
| Oxygenated sesquiterpenes | 41.61 ± 0.64 | |||
a Linear retention index on ZB-5MS column; b Linear retention indices on ZB-5MS column or equivalent columns according to the NIST library (webbook.nist.gov, accessed on 2 February 2024); c Expressed as the mean percentage area extracted from the GC–MS chromatograms of three repeated analyses; in bold are the major terpenes; * confirmed by standard.