Fractionation of rice straw lignin with choline chloride acidic deep eutectic solvents: Structural characterization and multifunctional functional properties.
Lignin is largely wasted agro-industrial aromatic biomass. Green deep eutectic solvents (DES) fractionation optimizes its UV-blocking, antioxidant and antibacterial performance, outperforming traditional alkali extraction. This study compares NaOH and four choline chloride acidic DES to reveal their regulation effects...