Research Article
Inhibition of Calcium Oxalate Formation and Antioxidant Activity of Carboxymethylated Poria cocos Polysaccharides
Table 2
Chemical shifts corresponding to 13C NMR spectra of carboxymethylated polysaccharides (PCP-Cs).
| | Polysaccharide type | Sugar residue | 13C chemical shift (ppm) | | C-1 | C-2 | C-3 | C-4 | C-5 | C-6 | -CH3 | C-7 |
| | PCP-C0 | β-(1-3)-D-Glc | 102.53 | 74.12 | 95.89 | 69.58 | 75.74 | 60.75 | — | — | | β-(1-3)-D-Gal | 103.7 | 73.5 | 86.9 | 69.1 | 77.0 | 61.6 | — | — | | α-D-Gal | — | — | 73.6 | 67.0 | 70.5 | 61.3 | — | — | | α-(1-6)-L-Fuc | 98.2 | 67.7 | 70.5 | 71.6 | 67.3 | — | 15.8 | — | | α-(1-3)-L-Fuc | 98.2 | 67.0 | 69.7 | 71.6 | 67.3 | — | 15.8 | — | | PCP-C1 | | 102.8 | 73.1 | 79.2 | 69.6 | 74.8 | 60.9 | — | 177.8 |
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