[Optimization of extraction process with deep eutectic solvents and analysis of antioxidant activity of Gastrodia elata polysaccharides].

free radicals were up to (26.39±1.47)% and (30.61±0.16)%, respectively, which indicated that the polysaccharides extracted by the deep eutectic solvents had a certain antioxidant ability. The extracted polysaccharides can be further studied and developed as a potential natural antioxidant.