Table 4.
Compounds identified in thyme oil based on analysis using GC-MS.
| Component | RT | RIs | RINist | Percent (%) |
|---|---|---|---|---|
| α-pinene | 5.98 | 942.5 | 937 | 1.78 |
| Camphene | 6.37 | 956.8 | 952 | 0.42 |
| β-Myrcene | 7.29 | 990 | 991 | 0.55 |
| o-Cymene | 8.24 | 1,024.3 | 1,022 | 24.1 |
| Eucalyptol | 8.45 | 1,032 | 1,032 | 1.67 |
| γ-Terpinene | 9.14 | 1,057.2 | 1,060 | 5.42 |
| 4-Carene/Linalool | 10.27 | 1,097.9 | 1,099 | 4.4 |
| Camphor | 11.63 | 1,147 | 1,145 | 1.49 |
| Isoborneol | 12.09 | 1,164 | 1,157 | 0.14 |
| Endo-borneol | 12.32 | 1,172.6 | 1,167 | 0.73 |
| Terpinen-4-ol | 12.56 | 1,181.2 | 1,177 | 0.72 |
| Thymol | 15.57 | 1,293.2 | 1,291 | 51.07 |
| Carvacrol | 15.82 | 1,301.5 | 1,299 | 3.33 |
| Caryophyllene | 18.99 | 1,422.6 | 1,419 | 0.2 |
| Caryophyllene oxide | 22.95 | 1,585.4 | 1,581 | 0.18 |
RT, Retention time; RIs, Kovat′s Retention index of thyme oil compounds found in the sample used in this study; RINist, Kovat′s Retention index in NIST14 library. Values in bold type indicate the amounts (%) of two major components of thyme oil.