天然产物研究与开发 ›› 2016, Vol. 28 ›› Issue (1): 36-40.doi: 10.16333/j.1001-6880.2016.1.007

• 研究论文 • 上一篇    下一篇

利用光谱技术确定银耳多糖中糖醛酸的连接位点与连接方式

罗浩铭1,陈英红2,韩威3,周婷婷2,姜瑞芝2,王颖2*   

  1. 1 长春中医药大学,长春 130117;2 吉林省中医药科学院中医药基础所;3 吉林天药科技有限公司,长春 130012
  • 出版日期:2016-01-29 发布日期:2016-02-01

Determination of Linked Site and Linkage of Uronic Acid in Tremella fuciformis Polysaccharide by Spectral Technique

LUO Hao-ming1,CHEN Ying-hong2,HAN Wei 3,ZHOU Ting-ting2,JIANG Rui-zhi2,WANG Ying 2*   

  1. 1 Changchun university of Chinese Traditional Medicine,Changchun 130117,China;2 Jilin Academy of Chinese  Medicine and Material Medica Science;3 Natural Pharmatech Co.,Ltd,Changchun 130012,China
  • Online:2016-01-29 Published:2016-02-01

摘要: 为确定银耳酸性杂多糖结构中糖醛酸的连接位点,对银耳多糖进行了部分酸水解,并采用Sephadex LH20凝胶柱纯化,得到银耳寡糖部分。对寡糖PMP衍生化后的MSn分析表明,该寡糖均为酸性糖,主要含有银耳二糖和少量三糖,结合组成糖、甲基化和NMR结果分析,β-D-葡萄糖醛酸残基作为非还原末端以(1→2)连接方式与甘露糖相连。

关键词: 银耳多糖, 部分酸水解, MSn, NMR, 糖醛酸链接位点

Abstract: The aim of this study was to determine the binding site of uronic acid in the structure of Tremella fuciformis polysaccharide (TP). TP was partially acid hydrolyzed and further purified by Sephadex LH-20 column to afford oligosaccharide. The PMP derivative of oligosaccharide was analyzed by MSn,the results showed that it was acidic saccharide (mainly disaccharide and minor trisaccharide). Combined with the results of sugar composition,methylation and NMR analysis,it was indicated that β-D-glucopyranosyluronic acid residue was linked to the α-D-mannopyranose by (1→2)-linkage as non-reducing end.

Key words: Tremella fuciformis polysaccharide, partial acid hydrolysis, MSn, NMR, linked site of uronic acid

中图分类号: 

Q932