A method for isolating components of lignocellulose in hybrid poplar by using an organic solvent (γ-valerolactone) in combination with a solid organic acid (p-toluenesulfonic acid) is studied here. The combined hydrolysis factor (CHF) was used to measure the severity of the pretreatment conditions and to find the optimal reaction conditions (CHF = 54.99) by judging enzymatic saccharification and characterization of lignin residual. At this pretreatment strength, 91.67% hemicellulose and 86.14% lignin in lignocellulose were effectively removed, and the enzymatic hydrolysis of cellulose residue reached 84.84%. Hemicellulose was hydrolyzed to 4.39 g L⁻¹ of xylose, and a portion was converted to 2.95 g L⁻¹ of furfural and 3.59 g L⁻¹ of acetic acid. The molecular weight, polydispersities and phenolic hydroxyl groups content of the isolated lignin were 1587 g mol⁻¹, 1.04 and 3.64 mmol g⁻¹ respectively, which indicated that the lignin had the potential to be a phenolic resin material and wood polyurethane foam. In summary, this method effectively separated three components of lignocellulose and obtained high purity cellulose and lignin.

本文研究了一种通过结合有机溶剂（γ-戊内酯）和固体有机酸（对甲苯磺酸）来分离杂种杨中木质纤维素成分的方法。通过判断酶促糖化作用和木质素残留特征，使用组合水解因子（CHF）来衡量预处理条件的严重程度并找到最佳反应条件（CHF = 54.99）。在此预处理强度下，木质纤维素中的91.67％半纤维素和86.14％木质素被有效去除，纤维素残留物的酶促水解达到84.84％。将半纤维素水解为4.39 g L ^-1的木糖，并将一部分转化为2.95 g L ^-1的糠醛和3.59 g L^-1的乙酸。分子量，多分散性和隔离木质素的酚羟基含量分别为1587克摩尔^-1，1.04和3.64毫摩尔克^-1分别，表明木质素必须是酚醛树脂材料和木材聚氨酯泡沫的潜力。总之，该方法有效地分离了木质纤维素的三个组分，并获得了高纯度的纤维素和木质素。