Fig. 2
From: Recalcitrant carbohydrates after enzymatic hydrolysis of pretreated lignocellulosic biomass
Schematic structure of linkage type on model compounds. Glucopyranosyl residues: terminally linked (1), 3 linked (2), 4 linked (3), 6 linked (4), 4,6 linked (5); Xylopyranosyl residues: 4 linked (6), 2,4 linked (7), 3,4 linked (8); arabino(pyra/fura) nosyl residues: terminally linked pyranosyl (9), terminally linked furanosyl (10), 4 linked pyranosyl or 5 linked furanosyl (11); mannopyranosyl residues: terminally linked (12), 2 linked (13), 4 linked (14), 6 linked (15); galactopyranosyl residues: terminally linked (16), 2,4 linked (17), 3,4 linked (18)