id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
brj-24679	Wu, Yinglong; Song, Renyuan; Wu, Zhong; Huang, Wenxiu; Wang, Bangbin; Cui, Fukang; Liu, Yu	Deep Eutectic Solvent for Separation and Extraction of High Purity Lignin from Salix babylonica and its Characteristics	2025	13	.pdf	application/pdf	4990	240	55	The optimal samples (DES-E1 and DES-E7, 130 °C/1 h and 7 h) showed high purity lignin (> 89%) while maintaining structural integrity. 6890 Characterization of Lignin The FT-IR spectrometer (Thermo Fisher, Waltham, MA, USA) was used to analyze the structure of lignin fractions, and the fractions were prepared by pressing potassium bromide tablets (mass ratio 1:100).	cache/brj-24679.pdf	txt/brj-24679.txt