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[摘要]
目的 研究中药菟丝子Cuscuta chinensis Lam.种子中的多糖成分。方法 采用DEAE-cellulose离子交换与凝胶层析方法进行分离纯化, 通过理化常数, 化学和光谱分析研究其化学结构特征。结果 分别从稀碱提取物与沸水提取物中分得2个多糖, 即H6与H8, 其中 H6的相对分子量为3.14×105u, 而H8的相对分子量大于1.0×106u, 两者均为结构复杂的中性杂多糖, 都是由阿拉伯糖, 鼠李糖, 木糖和半乳糖组成。结论 它们均为首次从该植物中分得的多糖类的化合物
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[Abstract]
Object Polysaccharide constituents in the seed of Cuscuta chinensis Lam.. were inv estig at-ed. Methods Individual constituent was isolated and purified by DEAE-cellulose and gel-filt ration chro-matography, and its structural features were further studied by physicochemical constants, and spectral analysis. Results Two polysaccha rides, named H6 and H8, were obtained from alkalescent or boiling water extract fractions, respectively. The molecular mass of H6 was 3.14×105 and that of H8 was more than 1.0×106. Both structures were found to be complex neutxral heteropolysaccharides composed of Ara, Rha, Gal and Xyl. Conclusion These polysaccharides were obtained from this plant for the first time.
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