Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University, Kuala Lumpur, Malaysia.
Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology and Built Environment, UCSI University, Kuala Lumpur, Malaysia.
Bioresour Technol. 2019 Jun;282:525-529. doi: 10.1016/j.biortech.2019.03.065. Epub 2019 Mar 15.
In this work, a novel solvent, deep eutectic solvent (DES) was applied to examine its effectiveness in pretreating OPEFB. Three types of DESs, i.e. choline chloride-lactic acid (ChCl-LA), choline chloride-urea (ChCl-U) and choline chloride-glycerol (ChCl-G) were investigated. The pretreatment performance was based on cellulose digestibility, structural and morphology changes. At molar ratio of 1:2, ChCl-LA attained the highest reducing sugars yield of 20.7%, followed by ChCl-G (20.0%) and ChCl-U (16.9%). FT-IR and SEM results further confirmed the outstanding ability of ChCl-LA due of its ability in cellulose, hemicellulose and lignin disruption, exposing its cellulose fraction to enzymatic hydrolysis. ChCl-LA is also more favorable compare to acid and alkaline solvents as it could prevent sugars loss, use of expensive corrosion resistant equipment and ease products separation.
在这项工作中，一种新型溶剂，深共晶溶剂（DES）被应用于考察其预处理 OPEFB 的效果。研究了三种类型的 DES，即氯化胆碱-乳酸（ChCl-LA）、氯化胆碱-尿素（ChCl-U）和氯化胆碱-甘油（ChCl-G）。预处理性能基于纤维素消化率、结构和形态变化。在摩尔比为 1:2 时，ChCl-LA 获得了最高的还原糖得率为 20.7%，其次是 ChCl-G（20.0%）和 ChCl-U（16.9%）。FT-IR 和 SEM 结果进一步证实了 ChCl-LA 的出色能力，因为它能够破坏纤维素、半纤维素和木质素，使纤维素部分暴露于酶解中。ChCl-LA 也比酸和堿性溶剂更有利，因为它可以防止糖的损失、使用昂贵的耐腐蚀设备和便于产物分离。
