Table 3 The chemical displacement of 1H and 13C NMR of sugar residues
From: Preparation, structural characterization and in vitro activity of ginger polysaccharide
Code | Glycosyl residues | Chemical shifts (ppm) | |||||
|---|---|---|---|---|---|---|---|
H1/C1 | H2/C2 | H3/C3 | H4/C4 | H5/C5 | H6/C6 | ||
A | → 4)-α-D-Glcp-(1 → | 5.32 | 3.56 | 3.5 | 3.57 | 3.5 | 3.75 |
99.62 | 72.6 | 73.35 | 76.8 | 70.38 | 60.53 | ||
B | α-L-Araf-(1 → | 5.16 | n.d | 3.32 | 3.36 | 3.32 | 3.52 |
109.26 | n.d | 72.31 | 70.91 | 71.06 | 61.51 | ||
C | → 3, 6)-β-D-Galp-(1 → | 4.41 | n.d | 3.87 | 3.88 | 3.55 | 3.83, 3.34 |
103.02 | n.d | 76.66 | 69.3 | 69.73 | 69.37 | ||
D | → 3)-α-L-Araf-(1 → | 5.02 | 4.13 | 3.68 | 4.05 | 3.41 | 3.65 |
107.56 | 81.36 | 80.13 | 83.87 | 75.72 | 60.93 | ||