Similarity Evaluation of Different Origins and Species of Dendrobiums by GC-MS and FTIR Analysis of Polysaccharides

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 ().