Table 4.
Class of compounds in the essential oil of the studied Helichysum spp.
| Chemical Classes | H. cooperi | H. edwardsii | H. odoratissimum | H. pandurifolium | H. trilineatum |
|---|---|---|---|---|---|
| Relative Abundance (%) | |||||
| Monoterpene Hydrocarbons (mh) | 37.1 ± 1.2 | 65.1 ± 2.4 | 23.7 ± 1.0 | 10.3 ± 0.4 | 13.2 ± 3.4 |
| Oxygenated Monoterpenes (om) | 31.1 ± 0.8 | 19.4 ± 0.6 | 25.8 ± 2.0 | 0.6 ± 0.4 | 2.1 ± 0.1 |
| Total Monoterpenes (TM) | 68.2 | 84.5 | 49.5 | 10.9 | 15.3 |
| Sesquiterpene Hydrocarbons (sh) | 11.6 ± 0.9 | 2.3 ± 0.2 | 17.5 ± 0.3 | 11.8 ± 0.4 | 24.1 ± 0.9 |
| Oxygenated Sesquiterpenes (os) | 19.8 ± 0.5 | 11.6 ± 1.0 | 28.9 ± 1.6 | 74.7 ± 0.8 | 19.5 ± 3.5 |
| Total Sesquiterpenes | 31.4 | 13.9 | 46.4 | 86.5 | 43.6 |
| Diterpene Hydrocarbons (dh) | - | - | - | - | 9.5 ± 1.6 |
| Oxygenated Diterpenes (od) | - | 0.5 ± 0.0 | - | 0.4 ± 0.1 | 28.2 ± 3.2 |
| Total Diterpenes | - | 0.5 | - | 0.4 | 37.7 |
| Apocarotenoids (ac) | - | - | - | - | 0.2 ± 0.1 |
| Phenylpropanoids (pp) | - | - | - | 1.4 ± 0.1 | - |
| Non-terpene Derivatives (nt) | - | - | 2.1 ± 0.0 | 0.3 ± 0.1 | 0.9 ± 0.2 |
| Total Identified (%) | 99.6 ± 0.4 | 98.9 ± 1.1 | 98.0 ± 2.0 | 99.5 ± 0.5 | 97.7 ± 2.3 |