Design Expert 3D response surface models showing the effects of the factors (i) % solids loading (w/v) and (ii) reaction time (min) during 200°C pretreatment of BSG (temperature as previously optimised) on (a) % cellulose content of the solid residue following pretreatment of BSG (: 0.56), (b) % hemicellulose content of the solid residue following pretreatment of BSG (: 0.91), (c) achieved % theoretical glucose yield after enzymatic hydrolysis (: 0.78), and (d) achieved % theoretical xylose yield after enzymatic hydrolysis (: 0.75). Autohydrolytical pretreatment utilized a Monowave 300 microwave synthesis reactor with G30 vessels (Anton Parr). Digestion of pretreated residue: 24 h incubation (50°C) using 200 mg residue to 40 mL of a 1 g/L Celluclast solution buffered to pH .