State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China.
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, PR China.
Bioresour Technol. 2024 Nov;412:131423. doi: 10.1016/j.biortech.2024.131423. Epub 2024 Sep 3.
An innovative binary biol-based deep eutectic solvent (DES), specifically ethylamine hydrochloride-ethylene glycol (EaCl-EG), was developed for efficient pretreatment of eucalyptus biomass. This DES exhibited superior performance in achieving high delignification (85.0%) and xylan removal (80.0%), while preserving a significant amount of cellulose (94.5%) compared to choline chloride-based DES. Notably, the pretreated eucalyptus residues showed a remarkable glucose yield of over 92.5%, representing a substantial enhancement of up to 15 times compared to untreated eucalyptus. Furthermore, the pretreated liquor yielded high-purity lignin with a yield of 97.8%, characterized by well-preserved β-O-4 structure and nanoscale dimensions. These lignin nanoparticles (LNPs) were subsequently self-assembled into lignin nanobottles (LNBs), adding further value to the pretreatment process. The proposed novel binary EaCl-EG DES presented great potential as an efficient pretreatment solvent for future biomass fractionation processes.
一种创新的二元生物基深共熔溶剂（DES），即盐酸乙胺-乙二醇（EaCl-EG），被开发用于高效预处理桉树生物质。与氯化胆碱基 DES 相比，该 DES 表现出优异的性能，实现了 85.0%的高脱木质素率和 80.0%的木聚糖去除率，同时保留了大量的纤维素（94.5%）。值得注意的是，预处理后的桉树残渣的葡萄糖产率超过 92.5%，与未经处理的桉树相比，提高了高达 15 倍。此外，预处理后的液体产生了高纯度木质素，产率为 97.8%，具有良好保存的β-O-4 结构和纳米级尺寸。这些木质素纳米颗粒（LNPs）随后自组装成木质素纳米瓶（LNBs），为预处理过程增加了更多价值。所提出的新型二元 EaCl-EG DES 作为一种高效的预处理溶剂，具有很大的潜力，可用于未来的生物质分级处理过程。
