食品科学 ›› 2006, Vol. 27 ›› Issue (2): 81-83.

• 基础研究 • 上一篇    下一篇

一种荔枝壳多糖的分离鉴定

 杨宝, 赵谋明, 刘洋, 李宝珍   

  1. 华南理工大学轻工与食品学院
  • 出版日期:2006-02-15 发布日期:2011-09-05

Isolation and Identification of a Polysaccharide in Litchi Pericarp

 YANG  Bao, ZHAO  Mou-Ming, LIU  Yang, LI  Bao-Zhen   

  1. College of Light Industry and Food Science, South China University of Technology
  • Online:2006-02-15 Published:2011-09-05

摘要: 本研究采用DEAESepharoseFastFlow阴离子交换柱和G50葡聚糖凝胶柱从荔枝壳中分离出一种水溶性多糖组分,并对其进行结构分析。气相色谱法分析结果表明其主要由甘露糖和半乳糖组成,含少量的阿拉伯糖,摩尔百分比为65.6%:33.0%:1.4%。通过高碘酸氧化和Smith降解法分析表明分子间存在1,2键,1,3键和1,6键,其摩尔百分比为8.7%:83.3%:8.0%。凝胶渗透色谱测定该多糖分子量为14000D。采用红外光谱进一步分析其结构特征。

关键词: 荔枝壳, 多糖, 凝胶渗透色谱, 红外光谱

Abstract:  DEAE sepharose fast flow anion exchange column and sephadex G50 gel column were used to isolate and purify the major polysaccharide extracted from litchi pericarp. Mannose composition was determined by gas chromatography. It mainly comprised of mannose, galactose, and arabinose. The profile of gel permeation chromatography (GPC) showed that its molecular weight is 14000D and its structure is further identified by infrared (IR) spectra.

Key words: litchi pericarp, polysaccharide, gel permeation chromatography, infra-red spectra