食品科学 ›› 2007, Vol. 28 ›› Issue (2): 30-33.

• 基础研究 • 上一篇    下一篇

魔芋葡甘寡糖硫酸酯的分离纯化与理化分析

 黄皓, 干信   

  1. 华中农业大学食品科学技术学院; 华中农业大学食品科学技术学院 湖北武汉430068; 湖北武汉430068;
  • 出版日期:2007-02-15 发布日期:2011-12-31

Separation, Purification and Physicochemical Analysis of the Hydroxylpropyl Oligo-konjac Glucomannan Sulfate

 HUANG  Hao, GAN  Xin   

  1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430068, China
  • Online:2007-02-15 Published:2011-12-31

摘要: 制备的魔芋葡甘寡糖硫酸酯经过乙醇二次沉淀、透析、浓缩和真空冷冻干燥,得到粗品;葡聚糖凝胶层析分离纯化其组分,通过硫酸根和糖含量的检测,分别得到硫酸酯化与未硫酸酯化的组分Ⅰ、Ⅱ;醋酸纤维膜电泳结果为一条单一谱带,说明样品已达到电泳纯;凝胶色谱测定重均相对分子质量1595D,数均相对分子质量1572D,分子量分布PDI(MW/MN)为1.01,表明样品是单分散性分子量分布。

关键词: 魔芋葡甘寡糖, 硫酸化, 纯化

Abstract: The oligo-konjac glucomannan sulfate product was prepared after alcohol sediment twice, with dialysis and vacuum freezing drying. By determining respectively the contents of sulfate and sugar, the sulfated sample Ⅰand non-sulfated sample Ⅱwere obtained by gel filtration. The sample Ⅰappeared as a single band by separax electrophoresis. The weight average of relative molecular weight of hydroxypropyl sulfated oligo-konjac glucomannan is 1595D, the number average of relative molecular weight is 1572D, and PDI (MW/MN) is 1.01 by GPC.

Key words: oligo-konjac glucomannan, sulfating, purification