Fig. 1From: The effect of liquid hot water pretreatment on the chemical–structural alteration and the reduced recalcitrance in poplarChemical composition of untreated and LHW pretreated poplar. The x-axis denotes the pretreatment severity corresponding to different pretreatment time. Ara arabinose; gal galactose; glc glucose; xyl xylose; man mannoseBack to article page