Research Article
Fractionation of DMSO-Extracted and NaOH-Extracted Hemicelluloses by Gradient Ethanol Precipitation from Neosinocalamus affinis
Table 3
1H and 13C chemical shift (ppm) assignments for hemicellulosic fractions H50.
| Sugar residue | Chem shift (ppm) H/C | 1 | 2 | 3 | 4 | 5ax | 5eq | 6 | OMe |
| →4)-β-Xylp(1→ | 101.78/4.26 | 72.67/2.98 | 73.42/3.18 | 75.47/3.44 | 63.26/3.02 | 63.26/3.88 | | | α-GlcAp-(1→2 | 99.52/5.24 | 70.52/3.02 | 71.76/3.40 | | | | | 58.82/3.23 | α-Araf-(1→2,3 | 107.25/5.30 | 78.80/3.81 | 76.84/3.59 | 86.44/3.95 | 61.12/3.44 | | | | →4)-β-Xylp(1→, 2-O-Ac | | 73.07/4.38 | | | | | | | →4)-β-Xylp(1→, 3-O-Ac | | | 74.05/4.79 | | | | | |
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