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期 刊 ：中国中药杂志 1996年 21卷 01期 页码：39.

关键词：胖大海；多糖；

Keywords:the seed s of Sterculia lychnophora, polysaccharede,

摘 要 ：从中药胖大海水提取液中分离纯化得水溶性多糖ＰＰⅢ。它由半乳糖、阿拉伯糖、鼠李糖组成，摩尔比为１：１．６７：１．０１，分子量１６．２２万。分子主链中鼠李糖之间通过α－（１→３）甙键连接。它的主片段ＰＰⅢ由半乳糖和鼠李糖组成，摩尔比为１：２．７８，分子量为６．２５万。

Abstract:Polysaccharide PP Ⅲ was isolated and purified from aqueous extract of the seeds of Sterculia ly-chnophora.It is composed of galactose,arabinose and rhamnose,the molar ratio being 1:1.67:1.01 and molecularweight 162200.Rhamnoses in the main chain are linked by a (1→3)glycoside linkage.PPⅢ C is its major fragment,and is composed of galactose and rhamnose with a molar ratio of 1:2.78 and MW 62500.

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