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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
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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