山豆根多糖的性质和化学组成

 目的研究山豆根中各种水溶性多糖的性质、组成和类型。方法山豆根脱脂后，用热水，1mol·L^-1NaOH,2.5 mol·L^-1NaOH依次进行提取，分离纯化，进行组成分析和性质测定。结果共分离得到8种均一的多糖：山豆根水提多糖Ssa^-1，Ssa^-2，Ssa^-3，Ssa^-4，山豆根碱提多糖SSb-1FA, SSb^-2，SSb^-3和SSc^-1，根据组成和性质，它们分属于5种结构类型。结论山豆根中的可溶性多糖包括：淀粉、类淀粉、半纤维素、果胶，其中淀粉的含量最多，其次为果胶类多糖。

Characterization of polysaccharides from the roots of Sophora subprostrata

OBJECTIVE To study the properties and chemical compositions of the polysaccharides from Sophora subprostrata. METH- ODS The roots of Sophora subprostratawere extracted sequentially with boiling water,1mol·L^-1NaOH,2.5 mol·L^-1NaOH. The crude polysaccharide preparations were fractionated by anion exchange chromatography and gel permeation. The homogeneous polysaccharide fractions obtained were characterized by their physical properties and chemical compositions. RESULTS Eight homogeneous polysaccharides were iso-lated and purified, which were found to be amylopectin, amyloids, pectic, and hemicellulosic polysaccharides. CONCLUSION The soluble polysaccharides in the roots of Sophora subprostrata composed mainly of starch, and less amounts of pectic and hemicellulosic polysaccharides.The hemicellulosic polysaccharides here were xyloglucan and 4-O-methyl-glucuronosyl-arabinoxylan. Smallamount of arabinogalactoglucan was also isolated.