Structure | Chemical shift range (ppm) | mmol/g lignin | ||
MWL | ILL | EOL | ||
Aliphatic OH | 150 - 145 | 3.59 | 1.55 | 0.98 |
Syringyl OH | 144.5 - 140.5 | 0.39 | 0.31 | 1.24 |
Guaiacyl OH | 140.5 - 138.5 | 0.48 | 0.2 | 0.73 |
p-hydroxyphenyl OH | 138.5 - 136.5 | 0.45 | 0.2 | 0.38 |
Carboxylic | 135 - 133 | 0.16 | 0.12 | 0.21 |