The depolymerization of biomass carbohydrate polymers usually happened in homogeneous medium, just a few in heterogeneous solution. Herein, holocellulose from two Chinese herb residues Cortex albiziae (HRCA) and Heteropogon contortus (HRHC) was prepared and characterized. Deep eutectic solvent (DES) of choline chloride/p-coumaric acid collaborating with water was employed for the dissociation of those two holocelluloses and selectively dissolved hemicellulose into xylose with maximal yields of 81.50 % and 72.47 %, respectively. Most cellulose remained as the polymer state with a maximum solubility of 9.38 %. The synergistic action of DES and water was investigated to unveil the depolymerization mechanism and the roles of each component in depolymerizing procedure. It was water that released hemicellulose polymers and dissolved polymers to soluble short oligosaccharides, and DES rapidly cleaved the latter to xylose. Contrarily, DES broke cellulose to only soluble cello-oligosaccharides, but water exhibited the ability to hydrolyze cellulose to glucose.

生物质碳水化合物聚合物的解聚通常发生在均相介质中，少数发生在非均相溶液中。本文中，来自两个中药残渣白皮层（HRCA）和变形杂藻的全纤维素（HRHC）已准备并表征。氯化胆碱/对香豆酸与水的深度低共熔溶剂（DES）被用来分解这两种全纤维素，并选择性地将半纤维素溶解为木糖，最大产率分别为81.50％和72.47％。大多数纤维素保持聚合物状态，最大溶解度为9.38％。研究了DES和水的协同作用，揭示了解聚机理以及各组分在解聚过程中的作用。是水将半纤维素聚合物和溶解的聚合物释放为可溶性短寡糖，而DES迅速将后者裂解为木糖。相反，DES将纤维素分解为仅可溶性纤维寡糖，但是水表现出将纤维素水解为葡萄糖的能力。