Table 1.
The chemical composition of the OEOs.
| Compound | RI | RT (min) | Content (%) | |||
|---|---|---|---|---|---|---|
| OEO1 | OEO2 | OEO3 | OEO4 | |||
| Tricyclene | 921 | 6.159 | 0.01 | 0.01 | - | 0.01 |
| α-Thujene | 924 | 6.247 | 0.20 | 0.56 | 0.05 | 0.08 |
| α-Pinene | 932 | 6.467 | 0.49 | 0.52 | 0.88 | 0.16 |
| α-Fenchene | 947 | 6.91 | - | 0.04 | - | |
| Camphene | 948 | 6.957 | 0.21 | 0.13 | 0.27 | 0.15 |
| Thuja-2,4(10)-diene | 952 | 7.073 | 0.01 | - | - | - |
| 5-methyl-Furfural | 961 | 7.326 | 0.01 | - | - | - |
| Sabinene | 971 | 7.649 | - | 0.01 | 0.07 | 0.01 |
| β-Pinene | 977 | 7.809 | 0.07 | 0.67 | 0.25 | 0.47 |
| 1-Octen-3-ol | 979 | 7.877 | 0.08 | 0.14 | 0.04 | 0.17 |
| trans-meta-Mentha-2,8-diene | 983 | 7.983 | - | 0.02 | 0.02 | - |
| 3-Octanone | 985 | 8.049 | - | 0.06 | 0.08 | |
| Myrcene | 989 | 8.166 | 1.07 | 0.69 | 0.51 | 0.11 |
| 3-Octanol | 997 | 8.421 | - | 0.04 | 0.05 | |
| δ-2-Carene | 1004 | 8.642 | - | 0.04 | 0.03 | - |
| α-Phellandrene | 1006 | 8.724 | 0.23 | 0.07 | 0.01 | 0.04 |
| p-Mentha-1(&),8-diene | 1008 | 8.802 | 0.08 | 0.01 | 0.01 | 0.01 |
| α-Terpinene | 1015 | 9.076 | 1.09 | 0.81 | 0.19 | 0.46 |
| p-Cymene | 1017 | 9.168 | 0.01 | 0.01 | 0.03 | 0.01 |
| o-Cymene | 1022 | 9.346 | 3.61 | 4.59 | 5.00 | 3.59 |
| Limonene | 1026 | 9.493 | 0.19 | 0.55 | 0.21 | 0.58 |
| β-Phellandrene | 1027 | 9.546 | 0.25 | - | 0.07 | - |
| 1.8-Cineole | 1029 | 9.599 | - | 0.74 | 0.32 | 0.85 |
| (Z)-β-Ocimene | 1032 | 9.719 | 0.04 | 0.01 | 0.03 | 0.01 |
| M.IN.-β-Ocimene | 1041 | 10.077 | 0.08 | 0.02 | 0.01 | 0.01 |
| γ-Terpinene | 1052 | 10.500 | 3.47 | 2.84 | 1.83 | 2.55 |
| cis-Sabinene hydrate | 1063 | 10.915 | 0.14 | 0.02 | 0.02 | 0.02 |
| Terpinolene | 1076 | 11.437 | 0.22 | 0.05 | 0.09 | 0.02 |
| p-Cymenene | 1081 | 11.619 | 0.05 | 0.01 | 0.01 | 0.01 |
| Linalool | 1090 | 11.954 | 2.47 | 1.97 | 0.39 | 2.48 |
| trans-Sabinene hydrate | 1093 | 12.062 | 0.01 | - | - | - |
| endo-Fenchol | 1109 | 12.64 | - | - | - | 0.01 |
| cis-p-Menth-2-en-1-ol | 1115 | 12.825 | 0.04 | 0.01 | - | 0.01 |
| α-Campholenal | 1118 | 12.916 | 0.05 | - | - | - |
| γ-Terpineol | 1119 | 12.942 | - | - | 0.01 | - |
| trans-Sabinol | 1134 | 13.405 | 0.05 | 0.01 | 0.01 | - |
| neo-3-Thujanol | 1136 | 13.477 | 0.06 | - | - | 0.01 |
| Camphor | 1142 | 13.644 | - | 0.61 | - | 0.76 |
| cis-Chrysanthenol | 1144 | 13.735 | 0.01 | - | - | - |
| iso-Menthone | 1151 | 13.947 | - | 0.02 | - | - |
| β-Pineneoxide | 1164 | 14.349 | - | - | 0.01 | - |
| Borneol | 1170 | 14.532 | 1.35 | 0.92 | 0.26 | 1.17 |
| Terpinen-4-ol | 1179 | 14.825 | 0.97 | 0.44 | 0.16 | 0.55 |
| p-Cymen-8-ol | 1187 | 15.073 | 0.03 | - | - | 0.01 |
| α-Terpineol | 1196 | 15.349 | 0.11 | 0.26 | 0.04 | 0.33 |
| γ-Terpineol | 1198 | 15.410 | 0.21 | 0.47 | 0.09 | 0.54 |
| trans-dihydro Carvone | 1208 | 15.737 | - | 0.01 | - | 0.01 |
| trans-Piperitol | 1214 | 15.938 | 0.02 | - | - | - |
| trans-Carveol | 1224 | 16.273 | 0.03 | - | - | - |
| neoiso-dihydro Carveol | 1229 | 16.452 | 0.05 | - | - | - |
| Thymol, methylether | 1241 | 16.840 | 0.15 | 0.27 | 0.16 | 0.33 |
| Cumin aldehyde | 1246 | 17.024 | - | 0.05 | - | 0.04 |
| Carvone | 1251 | 17.224 | 0.33 | 0.01 | 0.01 | 0.02 |
| cis-Myrtanol | 1257 | 17.402 | - | 0.01 | - | - |
| Carvotan acetone | 1258 | 17.434 | 0.06 | - | 0.01 | 0.01 |
| 2E-Decenal | 1268 | 17.781 | - | 0.01 | - | 0.01 |
| Carvenone | 1271 | 17.854 | 0.07 | - | - | - |
| 2E-Decen-1-ol | 1276 | 18.041 | - | - | - | 0.01 |
| Thymol | 1295 | 18.689 | 1.88 | 2.06 | 1.65 | 2.43 |
| Carvacrol | 1309 | 19.152 | 77.73 | 76.64 | 85.70 | 77.61 |
| NI | 1319 | 19.505 | 0.23 | - | - | - |
| methyl-Anthranile | 1344 | 20.345 | - | - | - | 0.01 |
| δ-Elemene | 1349 | 20.498 | - | 0.05 | - | 0.06 |
| NI | 1355 | 20.701 | - | 0.09 | - | 0.12 |
| Nerylacetate | 1360 | 20.888 | 0.04 | - | - | - |
| Carvacrol acetate | 1367 | 21.097 | 0.36 | 0.01 | - | - |
| α-Ylangen | 1370 | 21.226 | 0.01 | - | - | - |
| Isoledene | 1372 | 21.262 | 0.01 | - | - | - |
| α-Copaene | 1377 | 21.433 | 0.07 | 0.07 | - | 0.08 |
| Geranylacetate | 1380 | 21.533 | 0.07 | 0.01 | - | 0.01 |
| β-Bourbonene | 1384 | 21.696 | 0.06 | 0.01 | - | - |
| β-Elemene | 1390 | 21.88 | - | 0.01 | - | 0.01 |
| Z-Jasmonene | 1395 | 22.044 | 0.01 | - | - | - |
| Methyl eugenol | 1402 | 22.292 | 0.09 | 0.01 | - | - |
| α-Funebrene | 1405 | 22.364 | - | - | - | 0.01 |
| α-Gurjunene | 1408 | 22.455 | 0.01 | - | - | - |
| E-Caryophyllene | 1423 | 22,856 | 1.49 | 2.60 | 0.98 | 2.93 |
| β-Copaene | 1432 | 23,100 | 0.02 | 0.01 | 0.01 | 0.01 |
| β-Gurjunene | 1435 | 23,181 | 0.01 | 0.01 | 0.01 | 0.01 |
| trans-α-Bergamotene | 1438 | 23.275 | 0.09 | - | - | - |
| α-Guaiene | 1440 | 23.335 | - | - | - | 0.01 |
| Aromadendrene | 1444 | 23.451 | 0.35 | - | 0.01 | - |
| α-Himachalene | 1457 | 23.788 | 0.03 | 0.01 | - | 0.01 |
| α-Humulene | 1464 | 23.988 | 0.09 | 0.53 | 0.01 | 0.58 |
| allo-Aromadendrene | 1469 | 24.122 | 0.05 | 0.01 | - | 0.01 |
| trans-Cadina-1(6),4-diene | 1482 | 25.502 | 0.03 | 0.01 | - | - |
| α-Cuprenene | 1486 | 24.596 | - | - | - | 0.01 |
| allo-Aromadendrene | 1469 | 24.129 | - | - | 0.01 | - |
| γ-Muurolene | 1486 | 24.600 | 0.06 | 0.00 | 0.01 | - |
| α-Amorphene | 1491 | 24.735 | 0.02 | - | - | - |
| γ-Amorphene | 1496 | 24.877 | 0.02 | - | - | - |
| Viridiflorene | 1503 | 25.109 | 0.21 | - | - | - |
| α-Muurolene | 1508 | 25.268 | 0.05 | 0.01 | - | - |
| Epizonarene | 1510 | 25.342 | 0.04 | - | - | - |
| trans-β-Guaiene | 1515 | 25.480 | 0.03 | - | - | - |
| β-Bisabolene | 1519 | 25.616 | 3.00 | 0.04 | 0.04 | 0.02 |
| γ-Cadinene | 1524 | 25.782 | 0.23 | 0.01 | 0.01 | - |
| δ-Cadinene | 1528 | 25.938 | 0.20 | 0.01 | 0.02 | 0.01 |
| trans-Calamenene | 1531 | 26.039 | - | - | - | 0.01 |
| β-Sesquiphellandrene | 1533 | 26.089 | 0.07 | - | - | - |
| trans-Cadina-1,4-diene | 1541 | 26.361 | 0.02 | - | - | - |
| α-Cadinene | 1545 | 26.493 | 0.03 | - | - | - |
| Germacrene B | 1568 | 27.254 | 0.01 | - | - | - |
| Spathulenol | 1581 | 27.695 | 0.25 | - | 0.01 | - |
| Caryophyllene oxide | 1585 | 27.850 | 0.46 | 0.14 | 0.45 | 0.37 |
| Globulol | 1588 | 27.954 | 0.03 | - | - | - |
| β-Atlantol | 1610 | 28.582 | 0.01 | - | - | - |
| Humulene epoxide II | 1613 | 28.661 | 0.02 | 0.02 | - | 0.05 |
| 1,10-di-epi-Cubenol | 1620 | 28.824 | 0.05 | - | - | - |
| Eremoligenol | 1640 | 29.326 | 0.03 | - | - | - |
| Caryophylla-4(14),8(15)-dien-5-alpha-ol | 1646 | 29.451 | 0.02 | - | 0.01 | 0.01 |
| α-Muurol | 1651 | 29.584 | 0.28 | - | - | - |
| 14-hydroxy-9-epi-M.IN.-Caryophyllene | 1656 | 29.712 | 0.05 | - | - | - |
| Eremoligenol | 1667 | 29.976 | 0.09 | - | 0.01 | 0.01 |
| (Z)-α-Santalol | 1684 | 30.402 | 0.03 | - | - | 0.01 |
| Khusinol | 1689 | 30.516 | 0.01 | - | - | - |
| α-Bisabolol | 1701 | 30.814 | 0.02 | - | - | - |
| (Z)-α-trans-Bergamotol | 1703 | 30.860 | 0.02 | - | - | - |
| 8-Cedrene-13-ol | 1706 | 30.967 | 0.02 | - | - | - |
OEO—Oregano Essential Oil; OEO1 (Turkey), OEO2 (USA), OEO3 (Poland), OEO4 (Europe); RI—Retention Index; RT—Retention Time; NI—Compound Not Identified with a Specific Mass Spectrum.