Table 1.
Volatile compounds expressed as area percentage, identified in Thymus capitatus essential oil
| Compound | RT | Amount relative (%) | KI | |
|---|---|---|---|---|
| Monoterpenes hydrocarbons | Tricyclene | 17.15 | < 0.1 | 920 |
| α-Thujene | 17.26 | 0.1 | 923 | |
| α-Pinene | 17.65 | 1.5 | 935 | |
| α-Fenchene | 18.43 | 0.3 | 951 | |
| β-Pinene | 19.67 | 0.3 | 981 | |
| β-Myrcene | 20.03 | 2.0 | 991 | |
| p-Mentha-1(7),8-diene | 20.78 | 0.1 | 992 | |
| α-Phellandrene | 20.88 | 0.2 | 1005 | |
| δ-3-Carene | 20.99 | < 0.1 | 1012 | |
| 1,4-Cineole | 21.23 | < 0.1 | 1014 | |
| α-Terpinene | 21.34 | 1.5 | 1018 | |
| p-Cymene | 21.74 | 13.2 | 1026 | |
| Limonene | 21.89 | 0.4 | 1033 | |
| 1,8-Cineole | 22.05 | 0.4 | 1033 | |
| γ-Terpinene | 23.13 | 8.7 | 1064 | |
| N.I. (M+154) | 23.63 | 0.1 | ||
| Monoterpenes oxygenated | Terpinolene | 24.24 | 0.2 | 1078 |
| Linalool | 24.73 | 1.9 | 1100 | |
| Borneol | 27.87 | 0.3 | 1165 | |
| Terpinen-4-ol | 28.15 | 0.6 | 1190 | |
| α-Terpineol | 28.79 | 0.1 | 1200 | |
| Thymol | 32.07 | 6.4 | 1266 | |
| Carvacrol | 32.63 | 59.3 | 1278 | |
| trans-β-Caryophellene | 37.34 | 2.2 | 1424 | |
| Sesquiterpenes oxygenated | Caryophellene oxide | 42.50 | 0.2 | 1581 |
RT, retention time; KI, Kovatz Index relative to C5–C24 n-alkanes on the DB-5 column