Table 3.

Contents of structural carbohydrates and lignin in aspen and spruce ^a

Biomass	Glucan	Arabinan	Galactan	Xylan	Mannan	Total lignin b
Hybrid aspen	0.409 ± 0.015	0.008 ± 0.001	0.016 ± 0.001	0.166 ± 0.010	0.030 ± 0.012	0.234 ± 0.002
Norway spruce	0.394 ± 0.003	0.014 ± 0.001	0.020 ± 0.001	0.053 ± 0.001	0.104 ± 0.001	0.283 ± 0.002

^aReported as g of carbohydrate or lignin per g of wood (dry weight) with standard deviations.

^bKlason lignin and acid-soluble lignin.