红枣多糖及红枣硒多糖抗氧化活性的比较研究

摘要

采用85%乙醇溶液提取了红枣多糖并制备出红枣硒多糖，采用超氧阴离子、羟自由基和DPPH自由基的清除实验比较研究了红枣多糖和红枣硒多糖的抗氧化活性。结果表明：红枣多糖和红枣硒多糖均表现出了很强的抗氧化活性，且红枣硒多糖的抗氧化活性更强，二者对超氧阴离子、羟基自由基、DPPH自由基的半抑制浓度EC50分别为：102、81μg/mL；1360、88μg/mL；51、79μg/mL。可见，研究红枣多糖和红枣硒多糖的抗氧化活性具有重要价值，可为开发出二者的功能产品提供理论支撑。%Jujube polysaccharide was extracted with 85 % ethanol, and then, the Se-polysaccharide was prepared using chemical method, the antioxidant activity of jujube polysaccharide and jujube Se -polysaccharide was determined by superoxide anion free radical , hydroxyl free radicals and DPPH free radical assays. The results showed that both jujube polysaccharide and jujube Se-polysaccharide have a very high antioxidant activity, moreover, jujube Se-polysaccharide have a higher antioxidant activity, IC50 of the two kinds of polysaccharides to superoxide anion, hydroxyl radicals, DPPH free radicals are 102, 81μg/mL;1 360, 88μg/mL;51, 79μg/mL respectively. Visible, the study on anti-oxidation of jujube polysaccharide and jujube Se-polysaccharide has a very important value , the results could provide theoretical support for the development of function product.