食品科学 ›› 2005, Vol. 26 ›› Issue (12): 90-98.

• 基础研究 • 上一篇    下一篇

燕麦中β-葡聚糖的分离纯化及结构表征

 汪海波, 谢笔钧, 刘大川, 汪海婴   

  1. 华中农业大学食品系,华中科技大学同济医学院基础部
  • 出版日期:2005-12-15 发布日期:2011-10-01

Separation, Purification and Structural Analysis of β-glucan from Oat

 WANG  Hai-Bo, XIE  Bi-Jun, LIU  Da-Chuan, WANG  Hai-Ying   

  1. 1.Food Science Department, Huazhong Agricultural University; 2.Basic Department, College of Tongji Medicine, Huazhong Science University
  • Online:2005-12-15 Published:2011-10-01

摘要: 以我国山西产燕麦(晋燕8号)为原料提取并分离纯化,得到Oglu-1和Oglu-2两个燕麦β-葡聚糖级分,经凝胶渗透色谱层析和Sephacryl-400SF柱层析,证实Oglu-1为单一组分,纸层析和HPLC分析表明该级分多糖由葡萄糖为单一糖基组成,红外光谱和核磁共振分析证明该多糖分子链中存在β-(1→4)和β-(1→3)两种糖苷键,其比例为2.1:1,该结果与国外学者的研究基本一致。采用凝胶渗透色谱和激光光散射联用仪(GPC-LLS)测定Oglu-1的重均相对分子质量为4.49×105。

关键词: 燕麦, &beta, -葡聚糖, 结构分析

Abstract: Two kinds ofβ-glucan ,Oglu-1 and Oglu-2, were extract and purified from Oat. Oglu-1 was shown to be a single homogeneous component by GPC and Sephacryl-400SF column chromatography. It was found that Oglu-1 was composed of glucose units only and joined by β-D-(1→4) and β-D-(1→3) linkage with the linkage number ratio 2.1:1 by using the methods of paper chromatography, UV, IR, NMR and HLPC. The molecular average-weight of Oglu-1 is 4.49×105 was determined by CPC-LLS.

Key words: Oat, β-glucan, structural analysis