Table 1.
Phytochemical composition (%) of essential oil (EO) and hydrolate (H) of Thymus serpyllum (Ts) used in this study, via GC-MS. RI exp: retention index calculated with our experimental results; RI ref: retention index found in the literature for the same compound (source: Pherobase).
| No. Peak | Compound Name | RI Exp. | RI Ref. | EO (Ts) | H (Ts) |
|---|---|---|---|---|---|
| 1 | Butanoic acid. 2-methyl-. methl ester | 0.16 | - | ||
| 2 | Beta-thujene | 930 | 931 | 0.42 | - |
| 3 | Alpha-pinene | 937 | 939 | 1.02 | 1.25 |
| 4 | Camphene | 952 | 953 | 0.24 | 0.31 |
| 5 | Beta-pinene | 979 | 975 | 0.18 | 0.26 |
| 6 | 1-octen-3-ol | 982 | 979 | 0.32 | - |
| 7 | Beta-myrcene | 992 | 991 | 1.59 | 2.02 |
| 8 | 3-octanol | 996 | 993 | 0.16 | - |
| 9 | Alpha-phellandrene | 1005 | 1005 | 0.28 | 0.39 |
| 10 | 3-carene | 1011 | 1011 | 0.12 | - |
| 11 | 4-carene | 1019 | 1013 | 1.86 | - |
| 12 | Cymene | 1028 | 1026 | 8.3 | 11.23 |
| 13 | Limonene | 1032 | 1031 | 0.82 | - |
| 14 | Eucalyptol | 1035 | 1035 | 0.63 | - |
| 15 | Gamma-terpinene | 1063 | 1062 | 4.42 | 6.04 |
| 16 | Sabinene hydrate | 1071 | 1067 | 0.51 | - |
| 17 | Terpinolene | 1090 | 1089 | 0.39 | - |
| 18 | Linalool | 1103 | 1101 | 11.88 | 17.11 |
| 19 | Endo-borneol | 1171 | 1171 | 0.89 | - |
| 20 | Terpinen-4-ol | 1181 | 1178 | 1.41 | - |
| 21 | Alpha-terpineol | 1200 | 1189 | 0.89 | - |
| 22 | D-carvone | 1263 | 1243 | 0.19 | - |
| 23 | Thymol | 1294 | 1297 | 5.74 | - |
| 24 | Carvacrol | 1315 | 1317 | 53.96 | 58.67 |
| 25 | Caryophyllene | 1428 | 1418 | 1.94 | - |
| 26 | Aromandendrene | 1448 | 1439 | 0.56 | - |
| 27 | Humulene | 1462 | 1455 | 0.11 | - |
| 28 | Alloaromadendrene | 1502 | 1478 | 0.41 | - |
| 29 | Delta-cadinene | 1530 | 1524 | 0.18 | - |
| 30 | Spathulenol | 1586 | 1578 | 0.2 | - |
| 31 | Caryophyllene oxide | 1593 | 1583 | 0.24 | 2.73 |