Table 1.
Chemical composition of the essential oil from the leaves of Croton matourensis.
| Number | Compound | Retention Time (min) | RI Theo. a |
RI Exp. b |
Proportion Area (%) c |
|---|---|---|---|---|---|
| 1 | α-thujene | 5.28 | 924 | 924 | 1.99 ± 0.21 |
| 2 | α-pinene | 5.48 | 932 | 931 | 3.41 ± 0.34 |
| 3 | sabinene | 6.60 | 969 | 969 | 0.11 ± 0.03 |
| 4 | β-pinene | 6.72 | 974 | 974 | 0.25 ± 0.04 |
| 5 | β-myrcene | 7.11 | 988 | 987 | 0.26 ± 0.04 |
| 6 | α-phellandrene | 7.59 | 1002 | 1002 | 3.90 ± 0.28 |
| 7 | α-terpinene | 8.02 | 1014 | 1014 | 0.54 ± 0.30 |
| 8 | p-cymene | 8.31 | 1020 | 1020 | 5.05 ± 0.49 |
| 9 | limonene | 8.46 | 1024 | 1023 | 1.85 ± 0.18 |
| 10 | eucalyptol | 8.57 | 1026 | 1026 | 0.15 ± 0.02 |
| 11 | β-ocimene | 9.18 | 1032 | 1032 | 0.13 ± 0.02 |
| 12 | γ-terpinene | 9.62 | 1054 | 1054 | 2.02 ± 0.23 |
| 13 | terpinolene | 10.85 | 1086 | 1086 | 2.15 ± 0.18 |
| 14 | linalool | 11.30 | 1095 | 1095 | 3.85 ± 0.34 |
| 15 | 4-terpineol | 14.87 | 1130 | 1130 | 0.25 ± 0.05 |
| 16 | α-terpineol | 15.52 | 1131 | 1131 | 0.21 ± 0.04 |
| 17 | α-copaene | 24.62 | 1374 | 1373 | 1.92 ± 0.15 |
| 18 | α-bourbonene | 25.06 | 1387 | 1387 | 0.36 ± 0.05 |
| 19 | β-elemene | 25.48 | 1389 | 1388 | 4.94 ± 0.35 |
| 20 | β-caryophyllene | 26.74 | 1417 | 1417 | 12.41 ± 1.02 |
| 21 | α-humulene | 28.36 | 1436 | 1436 | 2.52 ± 0.20 |
| 22 | β-farnesene | 28.62 | 1440 | 1440 | 2.33 ± 0.14 |
| 23 | aromadendrane | 28.72 | 1460 | 1559 | 0.64 ± 0.11 |
| 24 | germacrene B | 29.52 | 1480 | 1480 | 1.07 ± 0.29 |
| 25 | α-amorphene | 29.71 | 1483 | 1483 | 0.90 ± 0.13 |
| 26 | α-selinene | 30.37 | 1498 | 1498 | 0.95 ± 0.08 |
| 27 | β-bisabolene | 31.06 | 1505 | 1505 | 0.59 ± 0.05 |
| 28 | γ-cadinene | 31.74 | 1513 | 1513 | 0.99 ± 0.11 |
| 29 | α-elemol | 32.91 | 1548 | 1548 | 0.96 ± 0.09 |
| 30 | spathulenol | 34.18 | 1577 | 1577 | 1.29 ± 0.15 |
| 31 | caryophyllene oxide | 34.41 | 1582 | 1582 | 3.19 ± 0.31 |
| 32 | globulol | 34.81 | 1590 | 1590 | 0.65 ± 0.12 |
| 33 | viridiflorol | 35.33 | 1592 | 1592 | 0.24 ± 0.07 |
| 34 | salvial-4(14)-en-1-one | 35.60 | 1593 | 1593 | 0.34 ± 0.09 |
| 35 | α-cadinol | 37.30 | 1638 | 1638 | 0.38 ± 0.08 |
| 36 | τ-muurolol | 37.41 | 1643 | 1643 | 0.48 ± 0.10 |
| 37 | β-eudesmol | 37.55 | 1649 | 1649 | 0.52 ± 0.13 |
| 38 | α-eudesmol | 37.61 | 1652 | 1652 | 0.48 ± 0.11 |
| 39 | bulnesol | 48.93 | 1670 | 1670 | 4.37 ± 0.48 |
| 40 | cembrene | 53.40 | 1937 | 1938 | 7.12 ± 0.55 |
| 41 | thunbergol | 56.69 | 2061 | 2063 | 11.74 ± 1.11 |
| 42 | geranyllinalool | 56.90 | 2125 | 2125 | 2.30 ± 0.34 |
| Σtotal identified | 90.00% |
a Retention indexes (RI) calculated with the Van den Dool and Kratz equation, b Main observed fragments and molecular mass (MM), c Proportional area relative to the total area of chromatogram after eliminating peaks arising of contamination and/or column bleeding.