Table 1.
Results of chemical composition of the essential oil.
| Peak No. | Components | RI a | RA b (%) | Identification Methods c |
|---|---|---|---|---|
| 1 | p-Xylene | 860 | 0.6 | MS, RI |
| 2 | Santolina triene | 900 | 1.9 | MS, RI |
| 3 | β-Pinene | 974 | 1.5 | MS, RI |
| 4 | o-Cymene | 1014 | 0.1 | MS, RI |
| 5 | 1,8-Cineole | 1031 | 16.0 | MS, RI, NMR |
| 6 | γ-Terpinene | 1056 | 0.6 | MS, RI, Co |
| 7 | Sabinenehydrate | 1071 | 1.1 | MS, RI |
| 8 | Isoterpinolene | 1085 | 0.1 | MS, RI |
| 9 | Camphor | 1143 | 0.3 | MS, RI |
| 10 | 4-Terpineol | 1175 | 4.0 | MS, RI, Co |
| 11 | α-Terpineol | 1188 | 2.0 | MS, RI, Co |
| 12 | γ-Elemene | 1397 | 0.8 | MS, RI |
| 13 | β-Caryophyllene | 1451 | 11.5 | MS, RI, NMR |
| 14 | α-Caryophyllene | 1454 | 0.9 | MS, RI, Co |
| 15 | β-Farnesene | 1457 | 5.3 | MS, RI |
| 16 | Germacrene D | 1479 | 2.7 | MS, RI |
| 17 | Valencene | 1504 | 1.3 | MS, RI |
| 18 | Spathulenol | 1523 | 1.1 | MS, RI |
| 19 | Caryophylladienol II | 1644 | 0.4 | MS, RI |
| 20 | Chamazulene | 1735 | 40.4 | MS, RI, NMR |
| Total | 92.6 |
a Retention index (RI) relative to the homologous series of n-hydrocarbons on the HP-5 MS capillary column; b Relative area (peak area relative to the total peak area); c MS = mass spectrum. Co = co-injection with standard compound. NMR = nuclear magnetic resonance.