红曲多糖的化学结构分析

Chemical Structure of Monascan

目的：分析红曲多糖的化学结构。方法：通过硅胶薄层层析和气相色谱、红外光谱，核磁共振氢谱等色谱与光谱技术基本确定了红曲多糖的结构组成。结果：红曲多糖是由甘露糖、葡萄糖、半乳糖组成，其摩尔比为１∶２∶４，该多糖分子中是以１→３位糖苷键为主，同时亦含有１→６和１→２位糖苷键。结论：红曲中存在大量的红曲多糖。

Objective:To analyze the chemical structure of monascan.Methods:The techniques of chromatography and spectrum,such as silica gel thin-layer chromatography,gas chromatography,infra-red spectrum and nuclear magnetic resonance hydrogen spectrum,were used to decide the chemical structure of monascan.Results:Monascan consists of mannose,glucose,and galactose,with their molar ration being 1:2:4.The cell of the polysaccharide is mainly composed of 1→3 glucosidic bond,and 1→6 and 1→2 glucosidic bonds as well.Conclusion:Monascus purpureus contains large amount of monascan.