食品科学 ›› 2011, Vol. 32 ›› Issue (21): 48-51.doi: 10.7506/spkx1002-6630-201121011

• 基础研究 • 上一篇    下一篇

两种石耳中多糖的提取与分离纯化及单糖组成分析

古丽扎尔;阿布都克依木,努尔比亚;亚力坤,克热木江;吐尔逊江,阿不都拉;阿巴斯*   

  1. 新疆大学生命科学与技术学院
  • 出版日期:2011-11-15 发布日期:2011-11-11
  • 基金资助:
    国家自然科学基金项目(30960003;31040004)

Isolation, Purification and Monosaccharide Composition Analysis of Polysaccharides from Two Umbilicaria Species

Gulzar ABDUKEYUM,Nurbiya YALKUN,Kerimjan TURSUNJAN,Abdulla ABBAS*   

  1. (College of Life Science and Technology, Xinjiang University, U . . ru..mqi 830046, China)
  • Online:2011-11-15 Published:2011-11-11

摘要: 目的:对网脊石耳(Umbilicaria decussate(Vill.)Zahlbr.)和淡肤根石耳(Umbilicaria virginis Schaer.)多糖中的单糖组成进行研究。方法:两种石耳经水提、醇沉、冷冻干燥得水溶性多糖,经DEAE-52离子交换层析柱和Sephadex G-150凝胶柱进行分离纯化得纯化多糖。气相色谱分析所得多糖的单糖组成。结果:淡肤根石耳精制多糖的单糖组为甘露糖、葡萄糖、半乳糖,其含量之比为16.00:50.96:6.17、淡肤根石耳纯化多糖的单糖组成为甘露糖、葡萄糖、半乳糖,其含量之比为2.97:17.70:1.52;网脊石耳精制多糖的单糖组成为甘露糖、葡萄糖、半乳糖,其含量之比为3.90:38.086:2.00、网脊石耳纯化多糖只含葡萄糖,含量为5.37%。结论:网脊石耳和淡肤根石耳都含有葡萄糖,含有少量的甘露糖和半乳糖。

关键词: 网脊石耳, 淡肤根石耳, 气相色谱, 单糖

Abstract: Objective:To analyze the monosaccharide composition of polysaccharides extracted from two Umbilicaria species: Umbilicaria decussate (Vill.) Zahlbr and Umbilicaria virginis Schaer.. Methods: Water-soluble polysaccharides from both Umbilicaria species were obtained by water extraction, ethanol precipitation and freeze-dried and purified into fractions SUv and ZUd, respectively by sequential column chromatography on DEAE-52 and Sephadex G-150. Gas chromatography (GC) was used to analyze their monosaccharide composition. Results: The monosaccharide composition of crude Umbilicaria virginis polysaccharides was composed of mannose, glucose and galactose at a ratio of 16.00:50.96:6.17. The monosaccharide composition of SUv was comprised of mannose, glucose and galactose at a ratio of 2.97:17.70:1.52. The monosaccharide composition of crude Umbilicaria decussate polysaccharides was made up of mannose, glucose and galactose at a ratio of 3.90:38.086:2.00. ZUd contained only 5.37% glucose. Conclusion: Both Umbilicaria decussata and Umbilicaria virginis contain glucose and a small amount of mannose and galactose.

Key words: Umbilicaria decussate (Vill.) Zahlbr., Umbilicaria virginis Schaer., gas chromatography, polysaccharides, monosaccharides

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