Enhanced Ethanol and Biogas Production from Pinewood by NMMO Pretreatment and Detailed Biomass Analysis

Table 1

Lignin and carbohydrate contents of untreated and NMMO treated pinewood¹.

Pretreatment time	Glucan (%)	Mannan (%)	Xylan (%)	Galactan (%)	Arabinan (%)	ASL^2 (%)	AINSL^3 (%)
Untreated	41.6±0.5	11.9±0.5	6.1±0.2	1.7±0.2	0.72±0.04	0.6±0.02	26.0±0.4
1 h treated wood	43.1±0.6	10.1±0.3	5.3±0.1	1.7±0.3	0.72±0.04	0.8±0.04	27.0±0.5
3 h treated wood	44.0±0.5	9.6±0.6	5.4±0.2	1.6±0.2	0.74±0.05	0.9±0.02	27.1±0.3
15 h treated wood	46.4±0.8	8.7±0.4	4.9±0.1	1.5±0.2	0.61±0.07	1.5±0.1	27.8±0.6

1All data are presented on dry weight basis (treated or untreated). All the given values are means of three determinations ± standard error.
2Acid soluble lignin.
3Acid insoluble lignin.