Table 1.
Chemical profile of the prepared lipophilic extract from the leaves of Stenocarpus sinuatus.
| Peak | Rt | Compound | Molecular Formula | RI-exp | RI-lit | Content (%) | Identification |
|---|---|---|---|---|---|---|---|
| 1 | 31.54 | 3,7,11,15-Tetramethyl-2-hexadecene | C20H40 | 1811 | 1811 | 0.26% | MS, RI |
| 2 | 31.67 | Neophytadiene | C20H38 | 1817 | 1817 | 8.19% | MS, RI |
| 3 | 32.58 | 7,11,15-Trimethyl-3-methylenehexadeca-1-ene | C20H38 | 1843 | 1844 | 3.07% | MS, RI |
| 4 | 33.55 | Hexadecanoic acid, methyl ester | C17H34O2 | 1907 | 1907 | 2.22% | MS, RI |
| 5 | 36.89 | 9,12-Octadecadienoic acid, methyl ester | C19H34O2 | 2077 | 2076 | 1.79% | MS, RI |
| 6 | 37.03 | 9,12,15-Octadecatrienoic acid, methyl ester, (Z, Z, Z)- (Linolenic acid, methyl ester) |
C19H32O2 | 2084 | 2085 | 4.38% | MS, RI |
| 7 | 37.23 | Phytol | C20H40O | 2095 | 2096 | 4.04% | MS, RI |
| 8 | 48.92 | Squalene | C30H50 | 2794 | 2790 | 1.03% | MS, RI |
| 9 | 49.70 | α-Tocospiro A | C29H50O4 | 2844 | 2855 | 0.64% | MS, RI |
| 10 | 49.80 | 2-Methyloctacosane | C29H60 | 2851 | 2857 | 1.54% | MS, RI |
| 11 | 51.97 | β-Tocopherol | C28H48O2 | 3048 | 3043 | 6.07% | MS, RI |
| 12 | 52.49 | Hentriacontane | C31H64 | 3088 | 3100 | 1.64% | MS |
| 13 | 53.27 | Vitamin E (α-tocopherol) |
C29H50O2 | 3146 | 3149 | 52.59% | MS, RI |
| 14 | 54.84 | Campesterol | C28H48O | 3255 | 3193 | 0.66% | MS, RI |
| 15 | 56.31 | γ-Sitosterol | C29H50O | 3346 | 3351 | 8.65% | MS, RI |
| Tocopherols | 58.66% | ||||||
| Acyclic diterpenes | 11.52% | ||||||
| Oxygenated diterpenes | 4.04% | ||||||
| Triterpenes | 1.03% | ||||||
| Sterols | 9.31% | ||||||
| Fatty acid methyl esters | 8.39% | ||||||
| Aliphatic alkanes | 3.18% | ||||||
| Others | 0.64% | ||||||
| Total identified | 96.77% | ||||||
RIexp, Retention index, determined experimentally on an Rtx-5MS column; RIlit, published retention indices.