食品科学 ›› 2010, Vol. 31 ›› Issue (15): 100-102.doi: 10.7506/spkx1002-6630-201015022

• 基础研究 • 上一篇    下一篇

玉竹中性多糖的分离纯化及单糖组成分析

王强1,李盛钰2,杨帆1,刘春明1   

  1. 1.长春师范学院中心实验室
    2.吉林省农业科学院农产品加工研究中心
  • 收稿日期:2009-12-14 出版日期:2010-08-15 发布日期:2010-12-29
  • 通讯作者: 刘春明1,* E-mail:chunmingliu2000@yahoo.com.cn

Isolation, Purification and Monosaccharide Analysis of a Neutral Polysaccharide from Polygonatum odoratum (Mill) Druce

WANG Qiang1, LI Sheng-yu2,YANG Fan1,LIU Chun-ming1,*   

  1. 1. Central Laboratory of Changchun Normal University, Changchun 130032, China;
    2. Center of Agro-food Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
  • Received:2009-12-14 Online:2010-08-15 Published:2010-12-29
  • Contact: LIU Chun-ming1,* E-mail:chunmingliu2000@yahoo.com.cn

摘要:

采用水提醇沉方法提取玉竹(Polygonatum odoratum (Mill) Druce)粗多糖,通过DEAE- 纤维素离子交换层析和Sepharose CL-6B 分子筛层析分离纯化得到玉竹中性多糖。应用紫外光谱分析中性多糖的纯度,凝胶过滤法测定其分子质量,红外光谱和高效液相色谱对其结构和单糖组成进行初步分析。结果表明:玉竹多糖主要为中性多糖,同时含有少量酸性多糖;玉竹中性多糖平均分子质量为1.21 × 106D,主要由甘露糖和葡萄糖组成,其物质的量比为5:1,同时含有少量半乳糖。

关键词: 玉竹, 多糖, 纯化, 单糖组成

Abstract:

Crude polysaccharides were obtained from Polygonatum odoratum (Mill) Druce by water extraction and ethanol precipitation, and were sequentially purified by ion exchange chromatography on DEAE-cellulose column and gel permeation chromatography on Sepharose CL-6B column and a neutral polysaccharide fraction was obtained. Its structure was determined using HPLC, FTIR and UV spectroscopy. The results showed that the polysaccharide fraction was mainly composed of mannose and glucose at a molar ratio of 5:1 and also contained a small amount of galactose and that its molecular weight was approximately 1.21 × 106 D.

Key words: Polygonatum odoratum (Mill) Druce, polysaccharide, purification, monosaccharide composition

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