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Table 4 Assignments of 13C–1H cross-signals in HSQC spectra of the water- and alkali-soluble hemicellulosic fractions

From: Effect of integrated treatment on enhancing the enzymatic hydrolysis of cocksfoot grass and the structural characteristics of co-produced hemicelluloses

Glycosyla Assignments (ppm)
  1 2 3 4 5eqb 5axc OCH3
X 13C 102.2 72.9 74.9 76.2 63.0 63.0  
1H 4.40 3.18 3.40 3.69 3.97 3.26  
U 13C   71.1 73.7     59.9
1H   3.50 3.70     3.40
A 13C 109.5 80.1 78.3 86.6 61.3 61.3  
1H 5.17 4.10 3.66 4.11 3.71 3.69  
Gal 13C   69.0      
1H   3.90      
Glc 13C    75.8     
1H    3.39     
  1. aX, (1 → 4)-linked-β-d-xylopyranosyl units; U, 4-O-methyl-α-d-glucuronic acid units; A, α-L-arabinofuranosyl units; Gal, galactose units; Glc, glucan units
  2. beq, equatorial
  3. cax, axial