Table 1.
Volatile constituents (%) of citrus oleoresin.
| Compounds | RI a | Tankan b | Ponkan b | Murcott b |
|---|---|---|---|---|
| Monoterpenes | ||||
| α-thujene | 933 | N.D c | 0.74 | 0.43 |
| α-pinene | 937 | 2.13 | 2.60 | 2.39 |
| sabinene | 968 | 0.60 | 1.12 | 0.93 |
| β-pinene | 979 | 0.07 | 1.21 | 0.72 |
| β-myrcene | 980 | 5.81 | 4.86 | 5.68 |
| 1-phellandrene | 1002 | 0.21 | 0.23 | 0.20 |
| p-cymene | 1004 | N.D | 1.69 | 0.84 |
| limonene | 1037 | 86.13 | 72.72 | 76.34 |
| β-ocimene | 1052 | 0.43 | 0.24 | 0.20 |
| γ-terpinene | 1063 | 0.17 | 8.77 | 6.01 |
| α-terpinolene | 1085 | 0.10 | 0.50 | 0.10 |
| Sesquiterpenes | ||||
| α-copaene | 1353 | 0.06 | N.D | 0.12 |
| γ-elemene | 1380 | 0.21 | N.D | N.D |
| γ-cadinene | 1389 | 0.11 | N.D | N.D |
| β-caryophyllene | 1428 | 0.37 | 0.16 | 0.49 |
| γ-muurolene | 1481 | 0.08 | N.D | 0.14 |
| germacrene D | 1478 | 0.09 | 0.26 | 0.18 |
| δ-cadinene | 1497 | 0.18 | N.D | 0.15 |
| Aldehydes | ||||
| nonanal | 900 | 0.06 | 1.52 | 0.79 |
| decanal | 1000 | 0.07 | 0.78 | 1.14 |
| 2-decenal | 1021 | 0.07 | N.D | N.D |
| perillaldehyde | 1042 | 0.05 | 0.10 | 0.12 |
| undecanal | 1100 | N.D | 0.21 | 0.17 |
| citronellal | 1132 | N.D | 0.36 | 0.50 |
| neral | 1210 | N.D | 0.21 | 0.31 |
| β-sinensal | 1673 | 0.18 | 0.20 | N.D |
| α-sinensal | 1689 | 0.38 | N.D | 0.18 |
| Alcohols | ||||
| linalool | 1098 | 1.40 | 0.81 | 1.05 |
| α-terpineol | 1177 | 0.44 | 0.11 | 0.22 |
| Esters | ||||
| geranyl acetate | 1362 | 0.16 | N.D | N.D |
| citronellyl acetate | 1382 | 0.21 | N.D | 0.20 |
| neryl acetate | 1434 | 0.18 | N.D | 0.20 |
| Ketone | ||||
| carvone | 1217 | N.D | 0.32 | 0.18 |
| d Total terpene compound | 96.75 | 95.11 | 94.92 | |
| e Total oxygenated compound | 3.25 | 4.89 | 5.08 | |
a RI: Retention index; b identified via comparison of the mass spectra with the RI; c N.D: not detected; d Total terpene compound contains Monoterpenes and Sesquiterpenes; e Total oxygenated compound contains Aldehydes, Alcohols, Esters and Ketone.