Table 2.
Chemical composition of fractions A-D obtained by GC/MS a.
| Components | Retention time (Rt) (min.) |
Relative (%) |
M+ m/z |
|---|---|---|---|
| fraction A | |||
| α-copaene | 17.33 | 2.6 | 220 |
| β-caryophyllene | 20.01 | 29.9 | 204 |
| zingiberene | 20.83 | 1.1 | 204 |
| germacrene-d | 21.84 | 0.6 | 204 |
| α-amorphene | 23.02 | 11.7 | 204 |
| β-selinene | 23.19 | 3.8 | 204 |
| calarene | 23.71 | 4.1 | 204 |
| α-muurolene | 24.17 | 3.6 | 204 |
| χ-cadinene | 24.87 | 7.7 | 204 |
| calamenene | 25.01 | 1.6 | 204 |
| δ-cadinene | 25.42 | 3.6 | 204 |
| α-cadinene | 26.09 | 3.0 | 204 |
| calacorene | 26.85 | 1.3 | 200 |
| α-caryophyllene oxide | 27.90 | 10.9 | 220 |
| Total compounds identified |
85.5 | ||
| fraction B | |||
| α-copaene | 17.37 | 36.0 | 220 |
| β-elemene | 18.41 | 0.9 | 204 |
| β-caryophyllene | 20.03 | 13.4 | 204 |
| β-cubenene | 20.25 | 3.0 | 204 |
| α-humulene | 21.18 | 0.8 | 204 |
| α-amorphene | 23.05 | 11.7 | 204 |
| α-aromadendrene | 23.11 | 3.8 | 204 |
| Total compounds identified |
69.6 | ||
| fraction C | |||
| α-cubebene | 16.06 | 5.1 | 204 |
| α-copaene | 17.35 | 38.2 | 220 |
| β-bourbonene | 17.76 | 7.6 | 204 |
| β-cubenene | 20.25 | 11.3 | 204 |
| α-aromadendrene | 23.13 | 0.7 | 204 |
| β-sesquiphellandrene | 25.34 | 0.9 | 204 |
| Total compounds identified |
36.4 | ||
| fraction D | |||
| β-farnesene | 16.48 | 2.8 | 204 |
| α-curcumene | 16.92 | 1.8 | 202 |
| β-bisabolene | 17.72 | 1.9 | 204 |
| Squalene | 42.40 | 89.9 | 410 |
| Total compounds identified |
96.4 | ||
aQuality 95 to 99 %.