Fig. 2

Concentrations of glucose (a) and xylose (b) of the substrates obtained from the four one-step processes by enzymatic saccharification. HR the residue obtained from hydrothermal treatment alone, AR the residue obtained from alkaline treatment alone, AHR the residue obtained from one-step process based on successively alkaline and hydrothermal treatment, HAR the residue obtained from one-step process based on successively hydrothermal and alkaline treatment