Table 1. Chemical composition of extracts obtained from steam-exploded Quercus mongolica

Component	Content (%)	Component	Content (%)
Monosaccharides		Organic acids
Arabinose	0.82	Acetic acid	1.46
Xylose	5.40	Uronic acid	0.51
Mannose	0.66	Levulinic acid	0.54
Galactose	0.42	Ferulic acid	0.21
Glucose	12.70	Cinnamic acid	0.10
Polyphenols		Vanillic acid	0.16
Lignin derivatives	2.60	Volatiles
Tannins	0.40	Furfural	Trace
Flavonoids	1.2	Eugenol	Trace
		Propane	Trace
		Isoeugenol	Trace

Trace indicates content below 0.1%.