Catalysis of Rice Straw Hydrolysis by the Combination of Immobilized Cellulase from Aspergillus niger on β-Cyclodextrin-Fe₃O₄ Nanoparticles and Ionic Liquid

Figure 8

The concentration of reducing sugar that was produced from rice straw (150 U g⁻¹) hydrolysis in the presence of different ionic liquids at pH 5.0, 37°C, and 1.67 Hz rotation speed. (a) Free cellulase with or without ionic liquid; (b) immobilized cellulase with or without ionic liquid. ■: rice straw hydrolysis by cellulase without ionic liquid treatment; ●: rice straw hydrolysis by cellulase and 1-butyl-3-methylimidazolium chloride ([bmim]Cl); ▲: rice straw hydrolysis by cellulase and 1-butyl-3-methylimidazolium hydrogen sulfate ([bmim]HSO₄); ▼: rice straw hydrolysis by cellulase and 1-ethyl-3-methylimidazolium diethyl phosphate ([emim]PO₄(C₂H₆)₂); ◆: rice straw hydrolysis by immobilized cellulase without ionic liquid treatment.

(a)

(b)