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Table 4 Assignments of 13C-1H cross-signals in HSQC spectra of hemicellulosic fractions isolated by sequential alkaline extractions from the delignified ryegrass

From: Enzymatic response of ryegrass cellulose and hemicellulose valorization introduced by sequential alkaline extractions

Glycosyl Assignments (ppm)
  1 2 3 4 5eqd 5axe OCH3
Xa 13C 102.4 73.5 75.0 76.0 63.2 63.2  
1H 4.35 3.17 3.32 3.60 3.93 3.21  
Ub 13C   71.2 73.8     59.6
1H   3.40 3.61     3.31
Ac 13C 109.6 80.2 78.3 86.5 61.7 61.7  
1H 5.25 3.91 3.63 4.05 3.73 3.55  
Gal 13C   69.5      
1H   3.85      
  1. aX, (1 → 4)-β-d-Xylp
  2. bU, 4-O-methyl-α-d-GlcpA
  3. cA, α-ʟ-Araf residues
  4. deq, equatorial
  5. eax, axial
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