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多糖为白花蛇舌草重要活性成分之一,主要是由鼠李糖、葡萄糖、半乳糖、阿拉伯糖及甘露糖组成的杂多糖;不同产地、不同采收季节对多糖含量具有一定影响;主要的提取方法是通过不同的提取温度、时间等条件,用各种柱层析得到多糖纯品;主要用苯酚-硫酸法、红外光谱及气相色谱分析法测定含量。白花蛇舌草多糖具有抗氧化、免疫调节、抗肿瘤等生物活性,其作用机制与提高免疫力、清除自由基作用有关。
Polysaccharides are one of the important active components of Hedyotis diffusa, mainly consisting of heteropolysaccharides composed of rhamnose, glucose, galactose, arabinose and mannose; polysaccharides have different effects on the content of polysaccharides in different producing areas and different harvesting seasons; Extraction method is through different extraction temperature, time and other conditions, using a variety of column chromatography to obtain pure polysaccharide; mainly phenol - sulfuric acid method, infrared spectroscopy and gas chromatography analysis of content. Hedyotis diffusa polysaccharides with antioxidant, immune regulation, anti-tumor and other biological activity, its mechanism of action and improve immunity, the role of free radicals scavenging.