食品科学

• 基础研究 •    下一篇

百合多糖纯化及分子质量测定

陈志刚,朱 泉,王 芬   

  1. 南京农业大学食品科技学院,农业部农畜产品加工与质量控制重点实验室,江苏 南京 210095
  • 出版日期:2013-09-15 发布日期:2013-09-27
  • 通讯作者: 陈志刚
  • 基金资助:

    国家自然科学基金面上项目(31071495);中央高校基本科研业务费专项(KYZ201002);
    教育部博士点(新教师)基金项目(200803071026);江苏省自然科学基金项目(BK2009319)

Purification and Molecular Mass Determination of Lily Polysaccharides

CHEN Zhi-gang,ZHU Quan,WANG Fen   

  1. Key Laboratory of Agricultural and Animal Products Processing and Quality Control, Ministry of Agriculture,
    College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
  • Online:2013-09-15 Published:2013-09-27
  • Contact: CHEN Zhi-gang

摘要:

以宜兴百合为原料,采用超声辅助热水法提取百合多糖。百合粗多糖经Sevag脱蛋白,透析后用DEAESepharoseFast Flow及Sephadex G-100色谱柱纯化,得到百合多糖组分LLPS-1、LLPS-2和LLPS-3。经考马斯亮蓝、紫外光谱及高效凝胶过滤色谱(HPGFC)检测,3种百合多糖不含蛋白及核酸,具有较高纯度。经HPGFC测定,3种百合多糖的重均分子质量分别是350.5、403.3kD和146.2kD。

关键词: 百合多糖, 纯化, 柱层析, 高效凝胶过滤色谱, 分子质量

Abstract:

Microwave-assisted hot-water extraction method was used to extract lily polysaccharides. Fractions LLPS-1,
LLPS-2 and LLPS-3 were isolated from the aqueous polysaccharide extract and purified through deproteinizaiton by Sevag’s
method, dialysis, DEAE-Sepharose Fast Flow chromatography and Sephadex G-100 column chromatography. Results from
coomassie blue staining, UV and high-performance gel permeation chromatography (HPGPC) showed that the purified
product contained neither protein or nucleic acid. The molecular weights of LLPS-1, LLPS-2 and LLPS-3 were 350.5,
403.3 kD and 146.2 kD, respectively.

Key words: lily polysaccharides, purification, column chromatography, HPGPC, molecular weight

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