Table 1. Constituents of chemotype II from Lippia alba (Mill) N.E.
| Substance | Retention time | Kovats index | Relative percentage (%) |
|---|---|---|---|
| Alpha-thujene | 3.37 | 924 | 0.28 |
| Alpha-pinene | 3.48 | 928 | 0.21 |
| Sabinene | 4.29 | 956 | 2.98 |
| Myrcene | 4.68 | 970 | 0.46 |
| Limonene | 5.69 | 1005 | 23.13 |
| Beta-ocimene (Z) | 6.11 | 1020 | 0.43 |
| Gamma-terpinene | 6.62 | 1038 | 0.70 |
| Terpinen-4-ol | 9.90 | 1152 | 0.22 |
| Carvone | 12.53 | 1244 | 54.57 |
| Isopiperitenone | 15.23 | 1339 | 0.97 |
| Beta-bourbonene | 16.45 | 1381 | 0.73 |
| Beta-cubebene | 16.67 | 1389 | 0.26 |
| Beta-elemene | 16.74 | 1391 | 0.28 |
| Caryophyllene (E) | 17.52 | 1419 | 0.34 |
| Aromadendrene Allo | 18.80 | 1463 | 0.26 |
| Alpha-muurolene | 19.55 | 1490 | 4.84 |
| Gamma-cadinene | 19.93 | 1503 | 0.24 |
| Geracrene A | 20.20 | 1500 | 0.41 |
| Bulnesol | 21.68 | 1564 | 2.14 |
Kovats index is a logarithmic scale on which the adjusted retention time of a peak is compared with those of unbranched alkanes. The relative percentage refers to the area calculated under the peak for that specific compound with respect to the total peak area.