Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
Bioresour Technol. 2016 Nov;219:1-5. doi: 10.1016/j.biortech.2016.07.026. Epub 2016 Jul 8.
In this work, three kinds of deep eutectic solvents (DESs) were facilely prepared and used in the pretreatment of corncob, including monocarboxylic acid/choline chloride, dicarboxylic acid/choline chloride and polyalcohol/choline chloride. The enhanced delignification and subsequent enzymatic hydrolysis efficiency were found to be related to the acid amount, acid strength and the nature of hydrogen bond acceptors. The XRD, SEM and FT-IR results consistently indicated that the structures of corncob were disrupted by the removal of lignin and hemicellulose in the pretreatment process. In addition, the optimal pretreatment temperature and time were 90°C and 24h, respectively. This study explored the roles of various DESs combinations, pretreatment temperature and time to better utilize the DESs in the pretreatment of lignocellulosic biomass.
在这项工作中，三种深共晶溶剂（DESs）被简便地制备并用于玉米芯的预处理，包括单羧酸/氯化胆碱、二羧酸/氯化胆碱和多元醇/氯化胆碱。发现增强的脱木质素和随后的酶解效率与酸量、酸强度和氢键受体的性质有关。XRD、SEM 和 FT-IR 结果一致表明，在预处理过程中，木质素和半纤维素的去除破坏了玉米芯的结构。此外，最佳预处理温度和时间分别为 90°C 和 24h。本研究探讨了各种 DES 组合、预处理温度和时间的作用，以更好地利用 DESs 对木质纤维素生物质进行预处理。
