Ultrasound-assisted green and efficient extraction of polysaccharides from Chlorella vulgaris using deep eutectic solvents and improving their performance

An ultrasound-assisted DES was developed to efficiently and environmentally extract polysaccharides from Chlorella vulgaris (extraction efficiency 5.32 mg g −1 ). Chlorella extract has low cytotoxicity, good biocompatibility, and skin permeability.