Research on metal salt-based deep eutectic solvent (DES) pretreatment is still in its infancy, and the effect of hydroxyl groups Cl− choline chloride (ChCl) not resolved. In this study, a type IV DES composed salt glycerol (Gly) was prepared for moso bamboo to improve enzymatic hydrolysis. The correlation between hydrolysis contents hemicelluloses lignin evaluated using Box–Behnken design. resu...