Table 3.
Chemical composition of essential oils hydrodistillated from Zanthoxylum leprieurii trunk bark. Each analysis was realized in triplicate.
| Trunk Bark | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N° | Compounds | Cas Number | Identification | Ria | Rib | May | June | July | Aug | Sep | Oct | Nov |
| 1 | α-pinene | 80-56-8 | MS, RI, STD | 931 | 929 | 0.52 ± 0.03 | - | - | - | - | - | - |
| 2 | ß-myrcene | 123-35-3 | MS, RI, STD | 987 | 988 | - | - | - | - | 1.00 ± 0.14 | - | - |
| 3 | citronellal | 106-23-0 | MS, RI, STD | 1153 | 1153 | - | - | - | - | 1.50 ± 0.08 | - | - |
| 4 | citronellol | 106-22-9 | MS, RI, STD | 1225 | 1227 | - | - | - | - | 1.60 ± 0.08 | - | - |
| 5 | geraniol | 106-24-1 | MS, RI, STD | 1250 | 1253 | - | - | - | - | 1.50 ± 0.14 | - | - |
| 6 | thymol | 89-83-8 | MS, RI, STD | 1286 | 1291 | - | 5.10 ± 0.36 | 0.50 ± 0.08 | - | 1.30 ± 0.05 | - | 4.10 ± 0.50 |
| 7 | ß-elemene | 515-13-9 | MS, RI | 1388 | 1394 | - | 0.60 ± 0.15 | - | - | 1.30 ± 0.03 | - | - |
| 8 | α-bergamotene | 17699-05-7 | MS, RI | 1415 | 1417 | 4.43 ± 0.10 | 0.50 ± 0.27 | 3.20 ± 0.69 | 1.60 ± 1.12 | 0.70 ± 0.01 | 1.50 ± 0.56 | 4.80 ± 0.60 |
| 9 | β-caryophyllene | 87-44-5 | MS, RI, STD | 1419 | 1423 | 9.51 ± 0.37 | 13.20 ± 0.33 | 8.50 ± 0.35 | 2.10 ± 0.13 | 8.10 ± 0.08 | 4.10 ± 0.79 | 1.80 ± 0.23 |
| 10 | γ-elemene | 3242-08-8 | MS, RI | 1432 | 1435 | - | 0.60 ± 0.21 | 0.10 ± 0.01 | - | - | - | - |
| 11 | geranylacetone | 3796-70-1 | MS, RI | 1455 | 1453 | - | 1.10 ± 0.51 | 0.50 ± 0.19 | - | 0.40 ± 0.02 | 0.30 ± 0.06 | - |
| 12 | α-humulene | 6753-98-6 | MS, RI, STD | 1456 | 1457 | 12.73 ± 1.41 | 4.30 ± 1.09 | 7.70 ± 0.62 | 6.20 ± 0.94 | 7.40 ± 0.11 | 8.10 ± 1.01 | 6.30 ± 0.03 |
| 13 | α-curcumene | 644-30-4 | MS, RI | 1482 | 1484 | 0.83 ± 0.18 | - | 0.70 ± 0.10 | 0.30 ± 0.11 | - | 0.40 ± 0.13 | 1.30 ± 0.08 |
| 14 | ß-selinene | 17066-67-0 | MS, RI | 1483 | 1490 | - | 0.30 ± 0.14 | 0.10 ± 0.01 | - | 0.30 ± 0.01 | - | 0.25 ± 0.33 |
| 15 | tridecan-2-one | 593-08-8 | MS, RI, STD | 1487 | 1495 | 45.26 ± 0.96 | 56.30 ± 0.31 | 51.4 ± 1.15 | 78.80 ± 0.55 | 54.40 ± 0.56 | 70.2 ± 0.95 | 71.36 ± 0.70 |
| 16 | tridecan-2-ol | 1653-31-2 | MS, RI, STD | 1495 | 1501 | 2.23 ± 0.17 | 10.10 ± 0.61 | 6.25 ± 0.17 | 4.30 ± 1.43 | 5.70 ± 0.20 | 6.40 ± 0.04 | 4.20 ± 0.40 |
| 17 | (3E,6E)-α-farnesene | 502-61-4 | MS, RI | 1503 | 1509 | 3.07 ± 0.28 | 1.20 ± 0.03 | 1.70 ± 0.04 | 2.70 ± 0.12 | 2.50 ± 0.09 | 2.30 ± 0.21 | 1.70 ± 0.03 |
| 18 | ß-bisabolene | 495-61-4 | MS, RI | 1505 | 1511 | 1.30 ± 0.05 | - | 1.20 ± 0.24 | 0.60 ± 0.37 | - | 0.50 ± 0.06 | 1.37 ± 0.20 |
| 19 | γ-cadinene | 39029-4-9 | MS, RI | 1513 | 1517 | - | - | 0.20 ± 0.02 | - | 0.60 ± 0.08 | - | 0.2 ± 0.08 |
| 20 | δ-cadinene | 483-76-1 | MS, RI | 1524 | 1526 | - | 0.20 ± 0.04 | 0.30 ± 0.04 | 0.10 ± 0.03 | 1.20 ± 0.05 | - | 0.38 ± 0.23 |
| 21 | elemol | 639-99-6 | MS, RI, STD | 1547 | 1552 | - | 0.30 ± 0.15 | - | - | 2.90 ± 0.07 | - | 0.31 ± 0.30 |
| 22 | nerolidol | 7212-44-4 | MS, RI, STD | 1557 | 1564 | 3.13 ± 0.27 | 0.40 ± 0.16 | 1.80 ± 0.63 | 0.40 ± 0.11 | 0.70 ± 0.03 | 1.20 ± 0.35 | 0.60 ± 0.03 |
| 23 | caryophyllene oxide | 1139-30-6 | MS, RI, STD | 1583 | 1588 | - | 0.20 ± 0.11 | 0.30 ± 0.00 | - | - | - | - |
| 24 | ζ-cadinol | 5937-11-1 | MS, RI | 1639 | 1645 | - | - | - | - | 0.30 ± 0.02 | - | - |
| 25 | α-cadinol | 481-34-5 | MS, RI | 1650 | 1659 | - | - | - | - | 0.50 ± 0.03 | - | - |
| 26 | pentadecan-2-one | 2345-28-0 | MS, RI, STD | 1696 | 1697 | 0.48 ± 0.02 | 0.50 ± 0.23 | 0.70 ± 0.02 | - | - | - | - |
| 27 | (E,E)-farnesol | 106-28-5 | MS, RI | 1722 | 1723 | 12.5 ± 0.85 | 3.00 ± 0.96 | 11.1 ± 0.15 | 1.40 ± 0.90 | 2.20 ± 0.45 | 1.90 ± 0.28 | - |
| 28 | farnesal | 19317-11-4 | MS, RI | 1738 | 1744 | 1.36 ± 0.02 | 0.40 ± 0.15 | 1.20 ± 0.05 | - | 0.30 ± 0.07 | 0.20 ± 0.04 | - |
| 29 | methyl farnesoate | 3675-00-1 | MS, RI | 1779 | 1785 | 1.90 ± 0.10 | 1.00 ± 0.35 | 1.60 ± 0.17 | - | 0.90 ± 0.08 | 0.70 ± 0.14 | - |
| Monoterpene hydrocarbons (%) | 0.52 | 0.00 | 0.00 | 0.00 | 1.00 | 0.00 | 0.00 | |||||
| Oxygenated monoterpene (%) | 0.00 | 5.30 | 0.50 | 0.00 | 5.90 | 0.00 | 4.10 | |||||
| Sesquiterpene hydrocarbons (%) | 31.87 | 21.80 | 24.20 | 13.60 | 22.20 | 16.90 | 18.20 | |||||
| Oxygenated sesquiterpenes (%) | 19.37 | 5.80 | 16.70 | 1.80 | 8.20 | 4.30 | 1.10 | |||||
| Others (%) | 47.46 | 66.40 | 57.65 | 83.10 | 62.10 | 77.10 | 75.60 | |||||
| Identified compounds (%) | 99.22 | 99.30 | 99.05 | 98.50 | 99.40 | 98.30 | 99.00 | |||||
| Yield (%) | 0.88 | 0.91 | 1.18 | 1.20 | 0.86 | 0.89 | 0.86 | |||||
Identification methods: RIa, theoretical kovats indices (Pubchem and NIST); RIb, calculated kovats indices; MS, mass spectra comparison with PAL 600®libraries; STD, retention time and mass spectra comparison with commercially available standards; RI, retention index comparison with the literature; CAS number; -, Under perception threshold.