Fig. 6From: Flowthrough pretreatment with very dilute acid provides insights into high lignin contribution to biomass recalcitranceStage 1 and Stage 2 sugar yields. Glucan (a), xylan (b), and glucan + xylan (c) yields from Stage 1 and Stage 2 combined. Stage 2 enzymatic hydrolysis was performed with 100 mg cellulase/g glucan initially in the raw poplar using flasks shaken at 150 rpm for 120 h at 50 °CBack to article page