Table 2.
Components of common peaks in fingerprint of patchouli oil.
| Peak number | Fresh patchouli oil | Stale patchouli oil | Components | ||
|---|---|---|---|---|---|
| Retention time | Relative content (%) | Retention time | Relative content (%) | ||
| 1 | 7.469 | 7.457 | 7.469 | 3.861 | β-Patchoulene (PAE) |
| 2 | 7.542 | 1.154 | 7.546 | 1.114 | β-Elemene |
| 3 | 8.013 | 3.429 | 8.017 | 2.481 | Caryophyllene |
| 4 | 8.266 | 13.303 | 8.257 | 11.796 | α-Guaiene |
| 5 | 8.420 | 6.628 | 8.416 | 8.623 | Seychellene |
| 6 | 8.600 | 5.019 | 8.596 | 5.312 | α-Patchoulene |
| 7 | 8.647 | 3.163 | 8.643 | 1.982 | δ-Guaiene |
| 8 | 9.139 | 4.343 | 9.135 | 3.259 | Globulol |
| 9 | 9.285 | 17.449 | 9.264 | 14.366 | α-Bulnesene |
| 10 | 11.417 | 3.096 | 11.392 | 2.490 | Azulene |
| 11 | 11.580 | 27.804 | 11.559 | 28.183 | Patchouli alcohol |