沙棘果硫酸化酯多糖HR_3SL的制备与分析

Synthesis and analysis of polysacchrivide sulfate from the fruits of Hippophae rhamnoides L.

从沙棘果皮分离提取了相对分子质量较均一的杂多糖ＨＲ３ ．用氯碘酸吡啶法对ＨＲ３ 进行硫酸化修饰后，相对分子质量明显增大，ＨＲ３ＳＬ的紫外光谱与红外光谱分析表明，在２０８ ｎｍ ，２６８ ｎｍ ，２８６ ｎｍ 和１ ２４０ ｃｍ －１ ，６２０ ｃｍ －１ 有硫酸酯键的特征吸收峰．紫外光谱法与硫酸钡质量法测定ＨＲ３ＳＬ中ＳＯ２－４ 含量约为２１ ％ ．

Polysaccharide HR 3 was isolated from the fruits of Hippophae rhamnoides L. HR 3SL was obtained from sulfational modification of HR 3 ith chlorosulfonic acid-pyridine. The UV and IV spectrum of HR 3SL showed absorptions of sulfati ester bonde at 218?nm,264?nm,268?nm,286?nm and 1?240?cm -1 ,620?cm -1 respectively. Analysis of UV and BaSO 4 weight showed HR 3SL contained SO -2 4 about 21%.