| Abstract:In this paper， based on the diversity of hydrogen bond acceptors， and hydrogen bond donors in acidic low-eutectic solvents （ADESs）， the characteristics of common ADESs， Lewis-ADESs and Brønsted-ADESs in the pretreatment process of lignocellulosic fiber biomass were summarized and the research progress in the field of lignin extraction， and value-added utilization were studied. Then， the valuation methods of DFT theory， Kamlet-Taft parameters， nuclear magnetic resonance technique （NMR）， and Fourier transform infrared spectroscopy （FT-IR） for lignin extraction by ADESs at home and abroad were reviewed， the mechanism and application of each evaluation method were discussed. Finally， the future efficient and sustainable lignin extraction， and value-added lignin utilization were envisioned， from the perspective of the effects of ADESs on the lignin structure as well as the lignin solvation process， with a view to providing certain references for the research in related fields. |
