Table 1. Volatile organic compounds identified by GC and GC/MS from the volatile extracts of flowering branches and flowers of Ulex europaeus and Cytisus scoparius.
Data are expressed as percentages of the total yield of the extract.
| Ulex europaeus | Cytisus scoparius | |||||
|---|---|---|---|---|---|---|
| IRa | IRb | Compound | Flowering branches | Flowers | Flowering branches | Flowers |
| Monoterpene hydrocarbons | ||||||
| 929 | 1030 | α-pinene | 0.23 | |||
| 1010 | 1187 | α-terpinene | 0.57 | 0.62 | ||
| 1046 | 1249 | γ-terpinene | 1.04 | 1.17 | ||
| Oxygenated monoterpenes | ||||||
| 1148 | 1496 | isomenthone | 0.32 | |||
| 1082 | 1543 | linalool | 3.08 | |||
| 1158 | 1597 | terpinen-4-ol | 2.66 | 4.30 | ||
| 1122 | 1648 | verbenol | 1.58 | 1.50 | ||
| 1169 | 1692 | α-terpineol | 1.23 | |||
| 1177 | 1698 | verbenone | 2.07 | 4.09 | ||
| 1142 | 1723 | p-menth-1,5-diene-8-ol | 0.58 | |||
| Sesquiterpene hydrocarbons | ||||||
| 1510 | 1763 | β-sesquiphellandrene | 0.94 | |||
| Oxygenated sesquiterpenes | ||||||
| 1545 | 2039 | E-nerolidol | 0.45 | 0.70 | ||
| 1828 | 2126 | 6,10,14-trimethylpentadecanone | 0.52 | 0.74 | 0.86 | |
| Oxygenated diterpenes | ||||||
| 2096 | n.d. | phytol | 1.85 | 0.92 | 1.90 | |
| Oxygenated norisoprenoids | ||||||
| 1298 | 1487 | theaspirane A | 0.24 | |||
| 1315 | 1522 | theaspirane B | 0.30 | |||
| Benzenoid compounds | ||||||
| 1339 | 2159 | eugenol | 0.21 | |||
| n.d. | 2190 | 4-vinyl-2-methoxyphenol | 0.22 | |||
| Aliphatic compounds | ||||||
| 1084 | 1393 | nonanal | 0.29 | |||
| 959 | 1442 | 1-octen-3-ol | 3.37 | 0.91 | 8.34 | |
| n.d. | 1707 | 8-heptadecene | 0.79 | |||
| 1900 | 1900 | n-nonadecane | 1.50 | 1.04 | ||
| 2000 | 2000 | n-eicosane | 1.69 | 1.47 | ||
| 1697 | 2022 | 2-pentadecanone | 1.18 | |||
| 2100 | 2100 | n-heneicosane | 2.46 | 3.06 | 14.75 | 14.28 |
| 2200 | 2200 | n-docosane | 0.58 | 1.28 | 3.43 | 2.90 |
| n.d. | n.d. | 2-heptadecanone | 0.76 | |||
| 2300 | 2300 | n-tricosane | 21.29 | 30.01 | 23.02 | 29.56 |
| 2400 | 2400 | n-tetracosane | 2.50 | 3.99 | 1.54 | |
| n.d. | n.d. | lauric acid | 1.57 | 1.10 | 1.66 | |
| 2500 | 2500 | n-pentacosane | 12.80 | 6.03 | 8.71 | |
| 2600 | 2600 | n-hexacosane | 16.81 | 8.50 | 8.26 | |
| n.d. | n.d. | myristic acid | 3.62 | 8.82 | 1.49 | 0.83 |
| 2700 | 2700 | n-heptacosane | 11.37 | 9.47 | 7.94 | |
| n.d. | n.d. | palmitic acid | 13.25 | 12.59 | 5.99 | 2.84 |
| Grouped components (%) | ||||||
| Monoterpene hydrocarbons | 1.61 | 2.02 | ||||
| Oxygenated monoterpenes | 0.32 | 10.62 | 10.47 | |||
| Sesquiterpene hydrocarbons | 0.94 | |||||
| Oxygenated sesquiterpenes | 0.97 | 1.44 | 0.86 | |||
| Oxygenated diterpenes | 1.85 | 0.92 | 1.90 | |||
| Oxygenated norisoprenoids | 0.54 | |||||
| Benzenoid compounds | 0.43 | |||||
| Aliphatic compounds | 89.91 | 61.76 | 85.87 | 82.1 | ||
| Total identified | 94.02 | 64.12 | 100 | 96.39 | ||
IRa retention index on SPB-1 column
IRb retention index on a Supelcowax-10 column.