食品科学 ›› 2004, Vol. 25 ›› Issue (10): 103-108.

• 工艺技术 • 上一篇    下一篇

葛仙米多糖的提取、分离与纯化技术研究

 莫开菊, 谢笔均, 汪兴平, 刘怀臣   

  1. 华中农业大学食品学院,湖北民族学院生物科学与技术学院
  • 出版日期:2004-10-15 发布日期:2011-10-24

Sduty on Extraction, Seperation and Purification of Nostoc Sphaeroides Kützing Polysaccharide

 MO  Kai-Ju, XIE  Bi-Jun, WANG  Xing-Ping, LIU  Huai-Chen   

  1. 1.Food Science College, HuaZhong Agricultural University;2.School of Biological Science and Technology, Hubei Institute for Nationalities
  • Online:2004-10-15 Published:2011-10-24

摘要: 葛仙米中富含多糖,并且具有优异的生物和生理活性,本文对葛仙米多糖的提取、分离进行了初步的研究,以期获得性能优良的葛仙米多糖。 葛仙米经破碎、脱色、去脂、提取、Sevage法沉淀蛋白质、酒精沉淀多糖、离心、得到粗多糖,最后,通过真空冷冻干燥得到白色的水溶性多糖和褐色的碱溶性多糖,经红外光谱证实:水溶性多糖和碱溶性多糖具有一般多糖的特征。 水溶性多糖的最佳提取参数是:90℃,6h,1:90加水,水提取4次,其提取率是14.09%;碱溶性多糖的最佳提取参数是:1mol/L的NaOH溶液, 提取6h,加1:25的碱液,提取4次,其提取率是5.70%。

关键词: 葛仙米, 水溶性多糖, 碱溶性多糖, 分离

Abstract: Nostoc sphaeroides kützing riches of polysaccharide and has special biological and physiological activity. The paperdo the reaserch of the extraction and seperation of Nostoc sphaeroides kützing to get fine Nostoc sphaeroides kützingpolysaccharide. Nostoc sphaeroides kützing is first crashed,dispored of color and fat,extracted then precipitated protein by sevagemethod. Precipitating polysaccharide with alcohol,then raw polysaccharide can be got with a success of centrifugal protocol.Inthe end,white water-soluble and brown alkila-soluble Nostoc sphaeroides kützing polysaccharide can be seperated by vacuumfreezing drying.FR-IT proves that the water-soluble and alkila-soluble Nostoc sphaeroides kützing have the common traits ofsom polysaccharide. The best extracting parameter of water-soluble is extracting 4 times with water (1:90) at 90℃for 6h each4 times. The best extracting parameter of alkila -soluble is extracting 4 times with NaOH (1:25,1mol/L) for 6h each 4 times. Thebest exacting ratio is 5.70%.

Key words: Nostoc sphaeroides kützing, water-soluble polysaccharide, alkila-soluble polysaccharide, seperation