Table 2.
Major constituents of thyme, rosemary, turmeric, and peppermint EOs identified by GC/MS analysis.
| Essential Oil | Compound * | Retention Time | Match | % Area | Standard | IK exp | IK rep |
|---|---|---|---|---|---|---|---|
| (min) | |||||||
| Thyme | Thymol | 13.33 | 98.4 | 37.31 | Yes | 1296 | 1291 |
| o-Cymene | 8.4 | 98.9 | 22.12 | No | 1029 | 1022 | |
| γ-Terpinene | 9.06 | 99.5 | 11.97 | Yes | 1063 | 1060 | |
| Caryophyllene | 15.59 | 98.8 | 4.37 | No | 1433 | 1419 | |
| Linalool | 9.81 | 98.4 | 2.75 | Yes | 1102 | 1099 | |
| Carvacrol | 13.47 | 97.4 | 2.43 | Yes | 1304 | 1299 | |
| β-Myrcene | 7.7 | 98.3 | 1.78 | No | 993 | 991 | |
| (+)-4-Carene | 8.23 | 96.9 | 1.66 | No | 1020 | 1009 | |
| Methyl carvacrol | 12.5 | 95.9 | 1.25 | No | 1249 | 1244 | |
| 1-Octen-3-ol | 7.45 | 96.9 | 1.22 | No | 980 | 980 | |
| α-Pinene | 6.61 | 96.5 | 1.16 | Yes | 937 | 937 | |
| Camphene | 6.9 | 98.1 | 1.12 | No | 952 | 951 | |
| Borneol | 11.33 | 98.1 | 1.06 | No | 1183 | 1167 | |
| Camphor | 10.74 | 97.5 | 0.91 | No | 1151 | 1142 | |
| D-Limonene | 8.47 | 91.6 | 0.71 | Yes | 1032 | 1018 | |
| trans-4-Thuja-nol | 9.22 | 94.5 | 0.71 | No | 1071 | 1070 | |
| Caryophyllene oxide | 18.13 | 88.2 | 0.64 | No | 1600 | 1581 | |
| α-Thujene | 6.47 | 94.8 | 0.49 | No | 930 | 929 | |
| (+)-δ-Cadinene | 17.16 | 82.4 | 0.35 | No | 1534 | 1524 | |
| Eucalyptol | 8.53 | 86.4 | 0.3 | Yes | 1036 | 1032 | |
| (+)-epi-Bicyclosesquiphellandrene | 17.05 | 84.3 | 0.26 | No | 1527 | 1435 | |
| p-Mentha-2,4-(8)-diene | 9.63 | 88.2 | 0.25 | No | 1092 | 1004 | |
| Rosemary | Eucalyptol | 8.54 | 99.8 | 43.28 | Yes | 1036 | 1032 |
| (+)-2-Bornano-ne | 10.74 | 99.4 | 13.34 | No | 1151 | 1143 | |
| α-Pinene | 6.61 | 99.3 | 13.17 | Yes | 937 | 937 | |
| Caryophyllene | 15.59 | 99.3 | 4.97 | No | 1433 | 1419 | |
| β-Pinene | 7.46 | 97.5 | 4.67 | Yes | 981 | 943 | |
| Camphene | 6.9 | 98.7 | 4.54 | No | 952 | 951 | |
| Borneol | 11.33 | 97.2 | 3.51 | No | 1172 | 1167 | |
| D-Limonene | 8.48 | 86 | 2.16 | Yes | 1033 | 1018 | |
| α-Terpineol | 11.56 | 90.04 | 2.15 | Yes | 1195 | 1189 | |
| o-Cymene | 8.39 | 97.7 | 1.53 | No | 1028 | 1022 | |
| β-Myrcene | 7.7 | 98.2 | 1.16 | No | 993 | 991 | |
| Linalool | 9.81 | 95.6 | 0.97 | Yes | 1102 | 1099 | |
| Bornyl acetate | 13.27 | 95.8 | 0.71 | No | 1293 | 1284 | |
| Terpinen-4-ol | 11.33 | 90.04 | 0.69 | Yes | 1183 | 1182 | |
| δ-Terpinene | 9.06 | 96.1 | 0.67 | Yes | 1063 | 1060 | |
| (+)-4-Carene | 8.23 | 96.4 | 0.52 | No | 1020 | 1009 | |
| Humulene | 16.13 | 86.2 | 0.41 | No | 1467 | 1454 | |
| Isoterpinolene | 9.64 | 91.7 | 0.31 | No | 1093 | 1004 | |
| β-Phellandre-ne | 6.38 | 87.8 | 0.16 | No | 925 | 1031 | |
| α-Thujene | 6.47 | 90.01 | 0.15 | No | 930 | 929 | |
| Peppermint | Menthol | 11.26 | 99.8 | 38.19 | No | 1179 | 1164 |
| D-menthone | 10.91 | 99.3 | 22.96 | No | 1160 | 1166 | |
| p-Menthan-1-ol | 11.09 | 95.2 | 8.39 | No | 1170 | 1178 | |
| Eucalyptol | 8.53 | 99.2 | 6.09 | Yes | 1036 | 1032 | |
| D-Limonene | 8.47 | 96.8 | 2.15 | Yes | 1032 | 1018 | |
| Caryophyllene | 15.59 | 97.3 | 1.81 | No | 1433 | 1419 | |
| β-Myrcene | 7.7 | 82.5 | 1.78 | No | 993 | 991 | |
| Pulegone | 12.47 | 97.8 | 1.67 | No | 1247 | 1237 | |
| L-terpinen-4-ol | 11.34 | 93 | 1.3 | No | 1183 | 1182 | |
| β-Pinene | 7.46 | 93.7 | 1.23 | Yes | 981 | 943 | |
| α-Pinene | 6.61 | 95.5 | 0.83 | Yes | 937 | 937 | |
| dl-menthol | 11.44 | 94.7 | 0.81 | No | 1189 | 1174 | |
| Caryophyllene oxide | 18.13 | 87.4 | 0.68 | No | 1600 | 1581 | |
| o-Cymene | 8.38 | 95.3 | 0.67 | No | 1028 | 1022 | |
| Piperitone | 12.72 | 94.3 | 0.59 | No | 1261 | 1253 | |
| α-Terpineol | 11.57 | 87.7 | 0.56 | Yes | 1196 | 1189 | |
| Mintlactone | 16.77 | 80.8 | 0.52 | No | 1508 | 1500 | |
| δ-Terpinene | 9.06 | 92.4 | 0.47 | Yes | 1063 | 1060 | |
| Cadina-1(6),4-diene | 17.16 | 86.9 | 0.4 | No | 1534 | 1469 | |
| Linalool | 9.81 | 83.6 | 0.31 | Yes | 1102 | 1099 | |
| β-Bourbonene | 15.01 | 89.6 | 0.27 | No | 1396 | 1384 | |
| α-Thujene | 6.47 | 92.1 | 0.25 | No | 930 | 929 | |
| 3-Octanol | 7.78 | 88.9 | 0.25 | No | 997 | 994 | |
| cis-Muurola-4(14),5-diene | 16.45 | 83.5 | 0.25 | No | 1487 | 1435 | |
| Turmeric | ar-Turmerone | 19.22 | 97.7 | 40.4 | No | 1677 | 1644 |
| Tumerone | 19.28 | 98 | 16.36 | No | 1682 | 1632 | |
| α-Curcumene | 16.5 | 99 | 4.53 | No | 1491 | 1483 | |
| Zingiberene | 16.69 | 97.3 | 4.25 | No | 1503 | 1495 | |
| β-Sesquiphellandrene | 17.14 | 97.1 | 3.15 | No | 1533 | 1524 | |
| (E)-Atlantone | 20.7 | 97.6 | 2.54 | No | 1786 | 1773 | |
| β-Bisabolene | 16.89 | 96.9 | 1.25 | No | 1516 | 1509 | |
| (Z)-γ-Atlanto-ne | 19.59 | 91.5 | 0.85 | No | 1704 | 1699 | |
| γ-Curcumene | 16.45 | 85.7 | 0.75 | No | 1487 | 1480 | |
| Caryophyllene | 15.59 | 91.1 | 0.67 | No | 1433 | 1419 | |
| 7-epi-Bisabol-1-one | 20.33 | 92 | 0.63 | No | 1759 | 1747 | |
| o-Cymene | 8.38 | 96.4 | 0.53 | No | 1028 | 1022 | |
| Dicumene | 16.84 | 83.6 | 0.48 | No | 1513 | 2021 | |
| Eucalyptol | 8.53 | 88.2 | 0.38 | Yes | 1036 | 1032 | |
| 2-Cyclohexen-1-one,3,4,4-tri-methyl | 17.65 | 81.8 | 0.31 | No | 1568 | 1198 | |
| α-Phellandre-ne | 7.99 | 93.5 | 0.26 | No | 1008 | 1005 | |
| Humulene | 16.13 | 81.8 | 0.26 | No | 1467 | 1454 | |
| (+)-4-Carene | 9.64 | 88.6 | 0.21 | No | 1093 | 1009 |
* The essential oil constituents were characterized by matching their mass spectra with compound library NIST. IK exp—Kováts retention index experimental. IK rep—Kováts retention index reported.