Table 2.

Chemical composition/molecular weights of lignin fractions from ethanol organosolv-pretreated wood sawdust

Lignin	Chemical composition (%)			Molecular weight
	AIL	Glucan	Hemicellulose	M w	M n	Mw/Mn
MWL-25	95.50 ± 0.17	0.62 ± 0.10	0.23 ± 0.01	6969	4932	1.41
MWL- 50	95.67 ± 0.67	0.62 ± 0.07	0.33 ± 0.13	8332	5028	1.66
EL-25	89.50 ± 2.16	1.50 ± 0.09	0.95 ± 0.02	1665	1240	1.34
EL-50	90.00 ± 2.00	1.21 ± 0.01	1.12 ± 0.12	1902	1330	1.43

^aAIL refers to the acid-insoluble lignin