Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Lin'an, Zhejiang 311300, PR China; College of Science, Zhejiang A & F University, Lin'an 311300, Zhejiang, PR China.
Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Lin'an, Zhejiang 311300, PR China; College of Science, Zhejiang A & F University, Lin'an 311300, Zhejiang, PR China.
Int J Biol Macromol. 2018 Oct 1;117:721-726. doi: 10.1016/j.ijbiomac.2018.05.232. Epub 2018 Jun 1.
Herein, an efficient DES/MIBK biphasic pretreatment system for preparation of furfural and fermentable glucose from lignocellulose was developed with AlCl as catalysis. The low-cost and renewable DES (Choline chloride-Oxalic acid) served not only as a Brønsted acid catalyst, but also as a pretreatment solvent in present work, and MIBK as an extracting reagent which can increase the yield of furfural in DES phase. The effects of this biphasic pretreatment on the furfural yield and saccharification of the lignocellulose before and after pretreatment were explored using HPLC, HAPEC, FT-IR, XRD and SEM. Under the best pretreatment condition (at 140 °C for 90 min), furfural could be obtained in 70.3% yield and 80.8% of the pretreated lignocellulose was saccharified, which was 8.4 times higher than that of the raw lignocellulose without pretreatment. In a word, this pretreatment system can be considered as a potential technique for efficient valorization of lignocellulose for production of furfural and fermentable glucose.
本文开发了一种高效的 DES/MIBK 两相预处理系统，用于在 AlCl 催化下从木质纤维素中制备糠醛和可发酵葡萄糖。低成本、可再生的 DES（氯化胆碱-草酸）不仅作为 Brønsted 酸催化剂，而且在本工作中作为预处理溶剂，MIBK 作为提取试剂，可提高 DES 相中糠醛的产率。使用 HPLC、HAPEC、FT-IR、XRD 和 SEM 研究了这种两相预处理对预处理前后木质纤维素中糠醛产率和糖化的影响。在最佳预处理条件（140°C 下 90 分钟）下，糠醛的产率为 70.3%，80.8%的预处理木质纤维素被糖化，这比未经预处理的原始木质纤维素高 8.4 倍。总之，该预处理系统可被视为一种高效利用木质纤维素生产糠醛和可发酵葡萄糖的潜在技术。
