Table 4 Hydroxyl concentrations (mmol/g) of the lignin fractions L0, L170, L200, and L210 obtained from Eucalyptus as determined by 31P NMR.

From: Revealing the structure and distribution changes of Eucalyptus lignin during the hydrothermal and alkaline pretreatments

 

Aliphatic OH

Syringyl OH

Guaiacyl OH

Carboxylic group

Total phenolic OH

L0

4.83

0.29

0.65

0.11

0.94

L170

2.78

0.87

0.74

0.31

1.61

L200

1.15

1.67

1.20

0.32

2.87

L210

1.02

0.93

0.96

0.53

1.89

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