Table 1.
Chromatographic profile of leaf essential oil of C. winterianus Jowitt ex Bor (LEO) by GC-MS.
| Peak | TR (min) | Compounds | (%) GC-MS |
(%) GC/FID |
IRR exp.∗ | IRR lit.∗∗ |
|---|---|---|---|---|---|---|
| 1 | 10.505 | 6-Methyl-5-hepten-2-one | 0.22 | 0.22 | 988 | 981 |
| 2 | 12.060 | Limonene | 1.36 | 2.03 | 1031 | 1024 |
| 3 | 12.980 | Bergamal | 0.26 | 0.33 | 1056 | 1051 |
| 4 | 13.675 | NI | 0.31 | 0.30 | 1074 | NI |
| 5 | 14.705 | Linalool | 0.58 | 0.73 | 1102 | 1095 |
| 6 | 15.815 | NI | 0.17 | 0.24 | 1131 | NI |
| 7 | 16.520 | Isopulegol | 0.42 | 0.43 | 1150 | 1145 |
| 8 | 16.795 | Citronellal | 27.09 | 28.55 | 1157 | 1148 |
| 9 | 17.180 | Z-Isocitral | 0.31 | 0.22 | 1167 | 1160 |
| 10 | 17.875 | E-Isocitral | 0.31 | 0.34 | 1185 | 1177 |
| 11 | 18.710 | n-Decanal | 0.34 | 0.34 | 1208 | 1201 |
| 12 | 19.575 | Citronellol | 9.53 | 10.14 | 1231 | 1223 |
| 13 | 20.095 | Neral | 7.32 | 6.94 | 1246 | 1235 |
| 14 | 20.615 | Geraniol | 37.57 | 35.43 | 1260 | 1249 |
| 15 | 21.180 | Geranial | 9.63 | 8.99 | 1275 | 1264 |
| 16 | 24.010 | Acetate of citronella | 0.54 | 0.40 | 1355 | 1350 |
| 17 | 25.075 | Acetate of geraniol | 1.45 | 1.22 | 1386 | 1379 |
| 18 | 26.550 | E-Caryophyllene | 0.34 | 0.52 | 1430 | 1417 |
| 19 | 31.910 | Caryophyllene oxide | 0.28 | 0.41 | 1597 | 1582 |
| 20 | 39.635 | NI | 1.97 | 2.21 | 1844 | NI |
RT = retention time, GC-MS = gas chromatography coupled to mass spectrometry, GC/FID = gas chromatography with flame ionization detector, IRR exp.∗ = experimental retention index, IRR lit.∗∗ = retention index found in literature, and NI = not identified.