Fig. 2From: A hydrotrope pretreatment for stabilized lignin extraction and high titer ethanol productiona Content of three components in the pretreated substrates (Cx stands for the acid concentration; Tx stands for the temperature; tx stands for the time), b Enzymatic saccharification of the pretreated substrates. c SEM images of raw material, the pretreated substrates obtained from C70T70t60 and C80T80t30Back to article page