氯化胆碱基低共熔溶剂拆分秸秆高产可发酵糖的研究

打开文本图片集

中图分类号：TS721 文献标识码：A DOI：10.7535/hbkd.2025yx03006

（SchoolofLifeScienceandFoodEngineering，Huaiyin Instituteof Technology，Huai'an，Jiangsu，China）

Abstract：Inorder toestablishanefcientprocessforthe pretreatmentof lignocellosic biomasstodeconstruct thecomplex structureandimproveenzymatichydrolysisefficiencyofpolysaccharidefractions，cholinechloride（ChCl）and glycerol（Gly） wereusedto synthesizegreen depeutectic solvent（DES）forcorn stover pretreatment.Thedeconstructioneffectsof DESon cornstover under diferent synthesisconditions werecompared，and thechemicalreagents wereadded toenhance pretreatment. Theresults indicate that，pretreatment at 120∘C for 3h by DES（at a molar ratio of 1：2 ）with 1% （204 H2SO4 addition improves the glucan content from 33.4% to 51.2% . In this case，the removal rates of xylan and lignin reache up to 86.7% and 39.0% ， respectively. After 72h enzymatic hydrolysis by cellulase，the productions of glucose and fermentable sugars are relatively high，reaching 29.0g and 30.7g from 100g of corn stover. Therefore，the H2SO4 -assisted DES system efficiently remove xylanandlignin，whichfacilitatestheimprovementsof hydrolysisandfermentablesugarsproduction.Thisstudydevelopsa grenand high-effcient pretreatment toprovide fundamental dataandtechnicalsupportforvalorizationofrenewableand abundant agricultural residuesin China.

Keywords：biochemicalengineering；agricultural residue；pretreatment；deepeutectic solvent；enzymatic hydrolysis；fermentable sugar

为解决化石燃料供应链波动、能源需求增长和全球气候变暖等问题，建立可持续的能源生产体系迫在眉睫[1-2]。（剩余14034字）