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Table 2 13C-1H HSQC contour integration values for inter-unit linkages in the lignin polymer of the lignin-rich residues

From: Lignin from hydrothermally pretreated grass biomass retards enzymatic cellulose degradation by acting as a physical barrier rather than by inducing nonproductive adsorption of enzymes

Structure

CS

MS

WS

3.65

3.83

3.97

3.65

3.83

3.97

3.65

3.83

3.97

G2

1

1

1

1

1

1

1

1

1

β-O-4

*

0.46

0.40

0.49

0.44

0.41

0.63

0.57

0.55

β-5

n/a

n/a

n/a

0.08

0.10

0.18

0.08

0.10

0.10

β–β

n/a

n/a

n/a

nd

0.005

nd

0.010

0.010

nd

  1. G2: C2-H2 correlation peak in guaiacyl subunit was used as reference
  2. n/a: not applicable, structure does not exist
  3. nd: peak too small for accurate determination
  4. * Contour integration was not possible
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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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