文献类型：期刊文献

英文题名：An integrated pretreatment strategy for enhancing enzymatic hydrolysis efficiency of poplar: Hydrothermal treatment followed by a twin-screw extrusion

作者：Jiao, Ting[1,2,3,4] Liang, Fangmin[1,2,3,4] Fang, Guigan[1,2,3,4] Jiao, Jian[1,2,3,4] Huang, Chen[1,2,3,4] Tian, Qingwen[1,2,3,4] Zhu, Beiping[1,2,3,4] Deng, Yongjun[1,2,3,4] Han, Shanming[1,2,3,4] Zhou, Xuelian[1,2,3,4]

第一作者：Jiao, Ting

通信作者：Liang, FM[1];Zhou, XL[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Nanjing 210042, Peoples R China;[4]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China

年份：2024

卷号：211

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20241015664403);WOS:【SCI-EXPANDED(收录号:WOS:001199304800001)】；

基金：This work was financially supported by special Fund for Basic Scientific Research Business of Central Public Research Institutes of China (No. CAFYBB2021ZI001-01) , Natural Science Foundation of Jiangsu Province (No. BK20230127) , Taishan Industrial Experts Programme (No. tscy20200213) .

语种：英文

外文关键词：Hydrothermal pretreatment; Twin-screw extrusion; Enzymatic hydrolysis efficiency; Poplar chips

摘要：To reduce the dependence on chemical inputs during biomass pretreatment, an integrated process on the basis of hydrothermal pretreatment followed by twin-screw extrusion for poplar was proposed. A comparative study was conducted on the pore structure, crystallinity, relative surface lignin concentration, cellulose accessibility, and enzymatic hydrolysis efficiency of the pretreated materials. Results suggested that the relative surface lignin concentration of fibers pretreated by hydrothermal treatment (conducted at 170 celcius for 90 min) coupled with extrusion (HE) treatment was decreased compared to the sole hydrothermal (H) process, which had a positive impact on the subsequent enzymatic hydrolysis. Additionally, the HE process resulted in an increase in pore size by 34.4%, pore volume by 447.5%, and specific surface area by 93.5%, which enhanced the penetration and interaction of water into the fibers and thus increased cellulose accessibility by 143.2%. SEM and TEM observations revealed that fibers were separated and finely fibrillated, large amounts of fragmentary structure and cracks appeared on the fiber. In addition, the cell wall structure was deformed and damaged, when pretreated by HE process. Overall, this work showed that hydrothermal treatment followed by twin-screw extrusion was an achievable strategy for high fermentable sugar production of hardwood.