期刊
BIORESOURCE TECHNOLOGY
卷 385, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.129458
关键词
Softwood; Light-colored lignin; Deep eutectic solvent; Structure
A ternary deep eutectic solvent was used to obtain light-color and low condensation lignin from softwood, which has potential applications in the field of daily chemicals.
Lignin is the most abundant natural phenolic polymer. However, the severe condensations of industrial lignin resulted in an undesirable apparent morphology and darker color, which hindered its application in the field of daily chemicals. Therefore, a ternary deep eutectic solvent is used to obtain lignin with light-color and low condensations from softwood. The results showed that the brightness value of lignin extracted from aluminum chloride-1,4-butanediol-choline chloride at 100 degrees C and 1.0 h was 77.9, and the lignin yield was 32.2 & PLUSMN; 0.6%. It is important that 95.8% of & beta;-O-4 linkages (& beta;-O-4 and & beta;-O-4 & PRIME;) was retained. Lignin is used to prepare sunscreens and is added to physical sunscreens at 5%, with SPF up to 26.95 & PLUSMN; 4.20. Meanwhile, enzyme hydrolysis experiments and reaction liquid composition tests were also conducted. In conclusion, a systematic understanding of this efficient process could facilitate high-value utilization of lignocellulosic biomass in industrial processes.
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