Table 1.
Chemical composition of Coreopsis triloba S.F. Blake essential oil.
| Component | DB-5MS | HP-INNOWAX | DB-5MS | HP-INNOWAX | ||||
|---|---|---|---|---|---|---|---|---|
| LRI a | LRI b | LRI a | LRI b | % c | δ d | % c | δ d | |
| α-pinene | 925 | 932 [21] | 1017 | 1025 [22] | 15.9 | 0.88 | 15.3 | 0.78 |
| sabinene | 965 | 969 [21] | 1118 | 1122 [22] | 2.2 | 0.02 | 2.4 | 0.03 |
| β-pinene | 968 | 974 [21] | 1105 | 1110 [22] | 0.6 | 0.03 | 0.6 | 0.03 |
| myrcene | 987 | 988 [21] | 1163 | 1161 [22] | 10.9 | 1.25 | 11.0 | 2.10 |
| α-phellandrene | 1002 | 1002 [21] | 1161 | 1168 [22] | 0.1 | 0.03 | Trace | - |
| p-cymene | 1020 | 1020 [21] | 1269 | 1270 [22] | 0.7 | 0.24 | 0.7 | 0.26 |
| β-phellandrene | 1025 | 1025 [21] | - | - | 24.6 | 0.05 | 25.0 | 0.08 |
| limonene | - | - | 1196 | 1198 [22] | - | - | 1.5 | 0.10 |
| (Z)-β-ocimene | 1034 | 1032 [21] | 1236 | 1235 [22] | 1.5 | 0.09 | 1.5 | 0.10 |
| (E)-β-ocimene | 1046 | 1044 [21] | 1253 | 1250 [22] | 35.9 | 1.73 | 35.2 | 2.08 |
| γ-terpinene | 1053 | 1054 [21] | 1205 | 1245 [22] | Trace | - | 0.1 | 0.01 |
| terpinolene | 1079 | 1086 [21] | 1280 | 1278 [23] | 0.1 | 0.01 | 0.1 | 0.01 |
| (E)-4,8-dimethyl-1,3,7-nonatriene | 1112 | 1117 [24] | 1309 | 1309 [25] | 0.1 | 0.01 | 0.2 | 0.01 |
| α-copaene | 1362 | 1374 [21] | 1481 | 1489 [26] | 0.1 | 0.02 | 0.3 | 0.05 |
| β-cubebene | 1376 | 1387 [21] | 1531 | 1542 [22] | 0.3 | 0.04 | 0.3 | 0.05 |
| (E)-caryophyllene | 1403 | 1417 [21] | 1585 | 1599 [22] | 0.2 | 0.03 | 0.2 | 0.03 |
| α-humulene | 1439 | 1452 [21] | 1657 | 1667 [22] | 0.1 | 0.02 | 0.1 | 0.03 |
| cis-cadina-1(6),4-diene | 1465 | 1461 [21] | 1697 | - | 0.7 | 0.08 | 0.7 | 0.11 |
| γ-curcumene | 1469 | 1481 [21] | - | - | Trace | - | - | - |
| ar-curcumene | 1473 | 1479 [21] | 1770 | 1770 [27] | 0.2 | 0.03 | Trace | - |
| germacrene-D | 1479 | 1480 [21] | 1722 | 1727 [26] | 1.3 | 0.21 | 1.2 | 0.22 |
| bicyclogermacrene | 1495 | 1500 [21] | 1729 | 1730 [26] | Trace | - | Trace | - |
| β-bisabolene | 1499 | 1505 [21] | - | - | 0.2 | 0.02 | - | - |
| δ-cadinene | 1506 | 1522 [21] | 1750 | 1756 [22] | 0.8 | 0.25 | 0.6 | 0.48 |
| spathulenol | 1562 | 1577 [21] | 2118 | 2127 [22] | 0.8 | 0.53 | 0.9 | 0.55 |
| cayophyllene oxide | 1564 | 1582 [21] | 1968 | 1986 [22] | 0.5 | 0.44 | 0.5 | 0.40 |
| eremoligenol | 1627 | 1629 [21] | 2179 | 2205 [28] | 0.5 | 0.16 | 0.5 | 0.15 |
| elemol | - | - | 2078 | 2080 [27] | - | - | 0.5 | 0.50 |
| γ-eudesmol | - | - | 2164 | 2176 [22] | - | - | 0.1 | 0.12 |
| Monoterpene hydrocarbons | 92.5 | 93.4 | ||||||
| Sesquiterpene hydrocarbons | 4.0 | 3.6 | ||||||
| Oxygenated sesquiterpene | 1.8 | 2.5 | ||||||
| Total amount of compounds | 98.3 | 99.5 | ||||||
a Calculated linear retention index (LRI); b reference linear retention index; c content; d standard deviation; trace% < 0.1.