食品科学 ›› 2010, Vol. 31 ›› Issue (3): 30-34.doi: 10.7506/spkx1002-6300-201003007

• 基础研究 • 上一篇    下一篇

苦瓜果实中多糖的分离纯化及性质分析

刘国凌1,宁正祥2,郭红辉1   

  1. 1.韶关学院食品科学与工程系 2.华南理工大学轻工与食品学院
  • 收稿日期:2009-05-25 出版日期:2010-02-01 发布日期:2010-12-29
  • 通讯作者: 刘国凌 E-mail:zibeike81@163.com;445472664@qq.com
  • 基金资助:

    国家自然科学基金项目(30800913)

Isolation and Characterization of Polysaccharides from Momordica charantia L. Fruits

LIU Guo-ling1,NING Zheng-xiang2,GUO Hong-hui1   

  1. 1. Department of Food Science and Engineering, Shaoguan University, Shaoguan 512005,China;
    2. College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510146, China
  • Received:2009-05-25 Online:2010-02-01 Published:2010-12-29
  • Contact: LIU Guo-ling E-mail:zibeike81@163.com;445472664@qq.com

摘要:

以苦瓜果实为材料,经热水抽提、乙醇沉淀和Sevag 法去蛋白后获得了苦瓜果实粗多糖(MCP)。MCP 经DEAE- 纤维素柱离子交换柱层析分离得到4 个级分MCP-A、MCP-B、MCP-C 和MCP-D。MCP-A 经Superdex G-100 柱进一步纯化得到苦瓜果实多糖MCP-A1 组分。MCP-A1 经高效凝胶渗透色谱法(HPGPC)鉴定为均一组分,测定其平均分子量为93577D。经过对其理化性质鉴定表明,MCP-A1 不含蛋白质、核酸,含有糖醛酸,为非淀粉类多糖。红外光谱扫描结果表明,其具有典型的多糖吸收峰。

关键词: 苦瓜, 多糖, 分离, 纯化, 性质

Abstract:

Crude polysaccharides (MCP) were extracted from dried fruits of Momordica charantia L. through sequential steps of hot water extraction, ethanol precipitation and Sevag protein removal and purified/fractionated by DEAE-cellulose-52 exchange chromatography to obtain four fractions (MCP-A, MCP-B, MCP-C and MCP-D). MCP-A1 with high purity was obtained through further purification of MCP-A by Superdex G-100 gel filtration chromatography and its purity was identified by high performance gel permeation chromatography (HPGPC). Results indicated MCP-A1 was a homogeneous polysaccharide with average molecular weight of 93577 D. Qualitative chemical reaction showed that MCP-A1 was a neutral polysaccharide that contained uronic acid, rather than proteins, nucleic acids and starch. Typical absorption peaks of this polysaccharide were also observed in infrared (IR) spectrum.

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

中图分类号: