高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (7): 1189.

• 论文 • 上一篇    下一篇

芦荟多糖的分离纯化及结构分析

闫吉昌, 崔春月, 张奕, 初人合   

  1. 东北师范大学化学学院, 长春 130024
  • 收稿日期:2002-07-23 出版日期:2003-07-24 发布日期:2003-07-24
  • 通讯作者: 闫吉昌(1943年出生),男,教授,博士生导师,从事质谱分析研究.E-mail:yanjc012@nenu.edu.cn E-mail:yanjc012@nenu.edu.cn
  • 基金资助:

    吉林省科技厅高技术基金(批准号:2001101)资助

Separation, Purification and Structural Analysis of Polysaccharides from Aloe

YAN Ji-Chang, CUI Chun-Yue, ZHANG Yi, CHU Ren-He   

  1. Faculty of Chemisty, Northeast Normal University, Changchun 130024, China
  • Received:2002-07-23 Online:2003-07-24 Published:2003-07-24

摘要: 以库拉索芦荟(Aloebarbadensismiller)为材料,经热水抽提,乙醇分级沉淀得2种酸性多糖PSA1和PSA2,用酶法和Seveg法去除蛋白质.经纸层析和Sephadex凝胶柱层析,证实均为单一组分.经薄层层析和乙酰化GC/MS分析表明,多糖PSA1由甘露糖和葡萄糖组成,摩尔比为1:1.3.多糖PSA2主要由甘露糖组成,经红外光谱及核磁共振证明了PSA2为部分乙酰化的甘露聚糖.经过改良的Hakomori甲基化,高碘酸氧化和Smith降解分析表明均为1→4连接,有少量的1→6连接,是分支较少的直链多糖.

关键词: 库拉索芦荟, 多糖, 结构分析

Abstract: Two kinds of acid polysaccharides, PSA1 and PSA2, were extracted by hot water, precipated by ethanol with different concentrations from Aloe barbadensis miller, deproteinized by enzymolysis and Sevag method. Each of them was shown to be a single homogeneous component by paper and Sephadex column chromatography. TLC analysis of the acid hydrolyzed product and GC/MS analysis of the acetylized product show that PSA1 is composed of D-mannose and D-glucose in a molar ratio of about 1.3:1, and PSA2 is composed of D-mannose, which was confirmed by IR and 1HNMR techniques as the partially acetylized polymannose. Hakomori methylation, Periodic acid oxidation and Smith degradation of PSA1 and PSA2 show that they are all straight chain polysaccharied with more 1→4 linking, fewer 1→6 linking and few branches.

Key words: Aloe barbadensis miller, Polysaccharides, Structure analysis

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