Table 3.
Monosaccharide compositions and contents (%) of the polysaccharides from the nine Dendrobium samples detected by GC-MS analysis of their TMS derivatives.
| Com. | TC-DHS | W-DHS | TC-DO | W-DO | TC-DM | W-DM | W-DHN | W-DL | W-DC |
|---|---|---|---|---|---|---|---|---|---|
| Arabinose | 0.6 ± 0.1 | 2.8 ± 0.4 | 0.1 ± 0.0 | 0.2 ± 0.1 | 0.7 ± 0.1 | 0.6 ± 0.1 | 0.4 ± 0.1 | 1.2 ± 0.1 | 0.5 ± 0.1 |
| Rhamnose | 0.3 ± 0.1 | 2.7 ± 0.3 | 0.1 ± 0.0 | 0.2 ± 0.0 | 0.7 ± 0.1 | 0.5 ± 0.1 | 0.4 ± 0.1 | 1.1 ± 0.1 | 0.6 ± 0.1 |
| Xylose | 0.3 ± 0.1 | 3.0 ± 0.2 | 0.1 ± 0.1 | 0.2 ± 0.1 | 0.3 ± 0.1 | 0.2 ± 0.1 | 1.0 ± 0.1 | 0.9 ± 0.2 | 0.5 ± 0.1 |
| Mannose | 62.0 ± 1.2 | 32.2 ± 1.1 | 65.6 ± 2.3 | 59.5 ± 1.5 | 48.5 ± 1.3 | 60.0 ± 1.7 | 50.6 ± 1.4 | 17.9 ± 0.9 | 59.7 ± 2.1 |
| Galactose | 2.2 ± 0.9 | 25.8 ± 1.3 | 3.3 ± 0.3 | 13.8 ± 0.7 | 3.9 ± 0.1 | 2.3 ± 0.2 | 2.5 ± 0.2 | 41.8 ± 1.7 | 3.8 ± 0.2 |
| Glucose | 27.0 ± 1.1 | 14.6 ± 0.9 | 17.9 ± 1.1 | 18.4 ± 1.2 | 29.8 ± 0.9 | 30.9 ± 1.3 | 29.9 ± 1.3 | 11.3 ± 0.3 | 10.4 ± 0.6 |
| Galacturonic acid | 4.1 ± 0.8 | 3.3 ± 0.2 | 9.6 ± 0.5 | 0.1 ± 0.0 | 5.1 ± 0.5 | 2.3 ± 0.1 | 2.6 ± 0.2 | 4.8 ± 0.3 | 6.5 ± 0.3 |
| Fucose | 1.2 ± 0.1 | 11.9 ± 0.7 | 4.5 ± 0.4 | 4.1 ± 0.4 | 10.2 ± 0.8 | 1.8 ± 0.1 | 10.1 ± 0.5 | 16.7 ± 1.1 | 16.7 ± 0.8 |
Values are means ± standard deviations (n = 3).