食品科学 ›› 2005, Vol. 26 ›› Issue (11): 115-119.

• 工艺技术 • 上一篇    下一篇

水提苦瓜多糖的分离纯化及组成性质研究

 董英, 徐斌, 陆琪, 查青   

  1. 江苏大学生物与环境工程学院
  • 出版日期:2005-11-15 发布日期:2011-10-01

Studies on the Isolation, Purification and Composition of Momordica charantia L. Polysaccharide

 DONG  Ying, XU  Bin, LU  Qi, CHA  Qing   

  1. School of Biological and Environmental Engineering, Jiangsu University
  • Online:2005-11-15 Published:2011-10-01

摘要: 目的:从苦瓜中分离水溶性苦瓜多糖,并研究其组成性质。方法:采用DEAE纤维素柱层析和凝胶柱层析分离纯化得到苦瓜多糖MCP2和MCP4,SepharoseCL-6B凝胶柱层析和醋酸纤维膜电泳检测证明为均一组分。气相色谱法和薄层层析法测定其多糖组成,凝胶过滤法测定其相对分子质量,红外光谱测定其糖苷键类型。结果:苦瓜多糖MCP2为半乳聚糖,MCP4含有鼠李糖、木糖、半乳糖和阿拉伯糖,它们的摩尔比为1:0.75:1.83:0.85。平均相对分子质量分别为5.37×104,9.65×104。它们的红外光谱中有典型的多糖吸收峰,紫外扫描无核酸和蛋白特征吸收峰。结论:MCP2,MCP4首次从苦瓜中提取获得,为均一多糖组分。

关键词: 苦瓜, 多糖, 分离, 纯化, 组成

Abstract: Objective: To study the isolation, purification and composition of Momordica charantia L. polysaccharide(MC). Methods MC was purified by DEAE ion-exchange cellulose (DEAE-52) and Sephadex G-100.The components of the saccha- ride were determined by GC and TLC. Its MW was measured by gel filtration. The form of glucosidic bond was determined by IR. Results: Rhamnose, xylose galactose, and arabinose were found in MCP4 with the molar ratio of 1:0.75:1.83:0.85 while galactose was found in MCP2. Their average MWs were estimated respectively to be 5.37×104 and 9.65×104. Typical absorption of polysaccharide was shown in their IR spectrum. They had no typical absorption of nucleic acid or protein by UV scanning. Conclusion: MCP2 and MCP4 are first isolated fromM omordica charantia L.

Key words: Momordica charantia L., polysaccharide, isolation, purification, composition