Table 1.
Chemical composition of supercritical carbon dioxide extracts of pitaya peel
|
No. |
Compounds |
RT
a
|
H. polyrhizus
|
H. undatus
|
|---|---|---|---|---|
| Area (%) | ||||
| 1 |
n-Hexadecanoic acid |
39.85 |
1.46 |
2.37 |
| 2 |
1-Hexadexyne |
44.47 |
- |
0.68 |
| 3 |
(Z, Z)-9, 12-Octadecadienoic acid |
44.97 |
- |
1.62 |
| 4 |
2-Chloroethyl linoleate |
45.01 |
0.38 |
- |
| 5 |
Oleic acid |
45.19 |
1.17 |
1.25 |
| 6 |
Octacosane |
49.61 |
12.2 |
- |
| 7 |
17-Pentatriacontene |
50.83 |
1.15 |
- |
| 8 |
Trichloroacetic acid, hexadecyl ester |
54.71 |
- |
5.21 |
| 9 |
1-Nonadecene |
54.79 |
3.17 |
- |
| 10 |
6-Tetradecanesulfonic acid, butyl ester |
55.81 |
- |
1.25 |
| 11 |
1,2-Benzenedicarboxylic acid, mono (2-ethylhexyl) ester |
56.11 |
0.31 |
0.81 |
| 12 |
Phthalic acid, 6-ethyloct-3-yl 2-ethylhexyl ester |
56.19 |
1.21 |
- |
| 13 |
Eicosane |
59.44 |
3.64 |
1.92 |
| 14 |
Tetratriacontane |
59.51 |
1.04 |
- |
| 15 |
1-Tetracosanol |
59.80 |
5.19 |
- |
| 16 |
Heptacosane |
59.93 |
0.44 |
5.52 |
| 17 |
Campesterol |
60.97 |
4.16 |
5.27 |
| 18 |
Stigmasterol |
62.59 |
1.21 |
2.75 |
| 19 |
Squalene |
62.86 |
0.22 |
0.64 |
| 20 |
11-Hexacosyne |
63.07 |
1.24 |
- |
| 21 |
Octadecanal |
63.18 |
- |
3.55 |
| 22 |
Nonacosane |
64.52 |
1.43 |
5.02 |
| 23 |
Octadecane |
64.87 |
6.27 |
9.25 |
| 24 |
γ-Sitosterol |
65.12 |
9.35 |
19.32 |
| 25 |
α-Amyrin |
66.15 |
13.90 |
- |
| 26 |
Hexadecyl oxirane |
67.55 |
- |
1.54 |
| 27 |
β-Amyrin |
67.81 |
15.87 |
23.39 |
| 28 |
Ergosta-4,6,8(14),22-tetraen-3-one |
68.24 |
- |
1.46 |
| 29 |
Docosane |
68.82 |
3.19 |
- |
| 30 |
Stigmast-4-en-3-one |
69.83 |
4. 65 |
- |
| 31 | β-Sitosterol | 72.84 | 2.46 | - |
Note: Relative proportions of the extract constitutes were expressed as percentages.
aRetention time.