Table 3.
Fatty acid composition of R. imbricata root (n = 3)
| Type of fatty acid | IUPAC name | CAS number | Retention time (min) | Peak area | Peak height | Peak width | % Content in total lipid | Content in root (mg/g) |
|---|---|---|---|---|---|---|---|---|
| Saturated fatty acid (SFA) | ||||||||
| Caproic acid (C6:0) | Hexanoic acid | 142-62-1 | 13.58 | 49,613 | 11,702 | 0.247 | 10.87 ± 0.27 | 8.8 ± 0.22 |
| Capric acid (C10:0) | Decanoic acid | 334-48-5 | 22.60 | 90,878 | 13,856 | 0.392 | 19.91 ± 0.49 | 16.2 ± 0.41 |
| Lignoceric acid (C24:0) | Tetracosanoic acid | 557-59-5 | 59.30 | 28,127 | 6418 | 0.742 | 6.16 ± 0.15 | 5.0 ± 0.13 |
| Palmitic acid (C16:0) | Hexadecanoic acid, (9Z)- | 57-10-3 | 40.70 | 42,991 | 9095 | 0.348 | 9.42 ± 0.23 | 7.6 ± 0.19 |
| Behenic acid (C22:0) | Docosanoic acid | 112-85-6 | 55.25 | 26,055 | 955 | 1.164 | 5.71 ± 0.14 | 4.6 ± 0.12 |
| Unsaturated fatty acid (UFA) | ||||||||
| Monounsaturated fatty acid (MUFA) | ||||||||
| Oleic acid (C18:1 n9c) | (9Z)-Octadec-9-enoic acid | 112-80-1 | 47.46 | 56,480 | 11,686 | 0.39 | 12.38 ± 0.31 | 10.0 ± 0.25 |
| Poly unsaturated fatty acid (PUFA) | ||||||||
| Linolelaidic acid (C18:2 n6t) | (9E,12E)-Octadeca-9,12-dienoic acid | 506-21-8 | 48.86 | 27,903 | 4221 | 0.383 | 6.11 ± 0.15 | 5.0 ± 0.14 |
| Linoleic acid (C18:2 n6c) | cis, cis-9,12-Octadecadienoic acid | 60-33-3 | 49.51 | 68,738 | 14,473 | 0.342 | 15.06 ± 0.38 | 12.2 ± 0.31 |
| Arachidonic acid (C20:4 n6) | (5Z,8Z,11Z,14Z)- Eicosatetraenoic acid | 506-32-1 | 57.33 | 38,262 | 2985 | 0.424 | 8.38 ± 0.21 | 6.8 ± 0.17 |
| cis-13,16-Docosadienoic acid (C22:2) | cis-13,16-Docosadienoic acid | 7370-49-2 | 59.05 | 27,314 | 5478 | 0.265 | 5.99 ± 0.15 | 4.9 ± 0.12 |
| ∑ SFA | 52.07 ± 1.28 | |||||||
| ∑ UFA | 47.22 ± 1.2 | |||||||
| ∑ MUFA | 12.38 ± 0.31 | |||||||
| ∑ PUFA | 35.54 ± 0.89 | |||||||