Table 1.
Volatile constituents of black coral identified by gas chromatography-mass spectrometry and retention index.
| No. | RT a | Constituents | RI b | % c |
|---|---|---|---|---|
| 1 | 4.014 | Triethyl phosphate | 1121.3 | 3.97 |
| 2 | 9.293 | Thujopsene | 1436.8 | 0.19 |
| 3 | 11.407 | Butylated hydroxytoluene | 1514 | 1.90 |
| 4 | 14.604 | Cedrol | 1605.3 | 1.21 |
| 5 | 22.571 | Tetradecanoic acid | 1762.1 | 0.19 |
| 6 | 28.923 | 1,2-Benzenedicarboxylic acid bis(2-methylpropyl) ester | 1861.5 | 2.24 |
| 7 | 33.340 | Hexadecanoic acid, methyl ester | 1927.0 | 1.65 |
| 8 | 36.452 | n-Hexadecanoic acid | 1973.4 | 3.15 |
| 9 | 41.396 | 11-Octadecenoic acid, methyl ester | 2097.8 | 1.16 |
| 10 | 42.903 | Oleic Acid | 2167.5 | 0.25 |
| 11 | 45.234 | Tricosane | 2298.6 | 0.32 |
| 12 | 46.929 | Phenol, 2,2′-methylenebis[6-(1,1-dimethylethyl)-4-methyl- | 2420.9 | 4.91 |
| 13 | 48.483 | 1,2-Benzenedicarboxylic acid, mono(2-ethylhexyl) ester | 2550.9 | 5.00 |
| 14 | 51.638 | Squalene | 2830.8 | 0.54 |
| 15 | 55.800 | Cholesterol | 3077.6 | 1.92 |
a
Retention times (minute);
b
Retention index were calculated from our analyses with respect to a series of n-alkenes;
c
percentage of relative amount to total.