食品科学 ›› 2011, Vol. 32 ›› Issue (3 ): 6-9.doi: 10.7506/spkx1002-6630-201103002

• 基础研究 • 上一篇    下一篇

可德兰寡糖的制备及其组分分析

傅赟彬1 , 2,刘启顺1,李曙光1,张建平1 , 2,白雪芳1,赵小明1,杜昱光1 ,*   

  1. 1.中国科学院大连化学物理研究所天然产物与糖工程1805 组,辽宁省碳水化合物研究重点实验室 2.中国科学院研究生院
  • 收稿日期:2010-05-31 修回日期:2010-12-30 出版日期:2011-02-15 发布日期:2011-01-13
  • 通讯作者: 杜昱光 E-mail:articles1805@gmail.com
  • 基金资助:

    国家“863”计划项目(2006AA10A213;2007AA091601;2006AA100313);中国科学院知识创新工程重要方向项目(KSCX2-YW-G-041);农业部公益性(农业)科研专项(200903052);科技部重大新药创制项目(2009ZX09501-011)

Preparation and Component Analysis of Curdlan Oligomers

FU Yun-bin1,2,LIU Qi-shun1,LI Shu-guang1,ZHANG Jian-ping1,2,BAI Xue-fang1,ZHAO Xiao-ming1,DU Yu-guang1,*   

  1. 1. Liaoning Provincial Key Laboratory of Carbohydrate, Natural Products and Glyco-Biotechnology Group 1805, Dalian Institute of
    Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;2. Graduate University of Chinese Academy of Sciences,
    Beijing 100049, China
  • Received:2010-05-31 Revised:2010-12-30 Online:2011-02-15 Published:2011-01-13
  • Contact: DU Yu-guang1 E-mail:articles1805@gmail.com

摘要: 目的:可德兰多糖是目前发现的唯一不含分支的线性β-1,3- 葡聚糖,由于难溶于水而限制其生物活性的研究,为此对可德兰寡糖的制备及其组分进行研究。方法:采用化学法酸解可德兰多糖。结果:通过红外光谱与基质辅助激光解析/ 电离飞行时间质谱(MALDI-TOF MS)的检测,结果表明:可德兰多糖降解后结构未发生变 化,降解产物的聚合度为2~19,其中聚合度为5 的成分含量最高;高效阴离子交换色谱脉冲安培检测法分析结果表明:反应温度105℃、反应时间150~180min 是降解可德兰寡糖的合理反应条件,降解效果最佳。结论:本研究建立的方法可简单、高效的降解可德兰多糖,制备其寡糖。

关键词: 可德兰多糖, 可德兰寡糖, 红外光谱, 基质辅助激光解析/电离飞行时间质谱, 高效阴离子交换色谱脉冲安培检测法

Abstract: Beta-1,3-glucan possesses extensive application and application values due to diverse biological activity. Curdlan, an extracellular bacterial polysaccharide, is a linear beta-1,3-glucan, and its water insolubility significantly limits its application. The aim of this study was to prepare the soluble curdlan oligomers (CRDO) for biological activities assay. In the homogeneous solution, CRDO structure change by acid hydrolysis and the influence of different factors on the degradation of curdlan measured by HPAEC-PAD was investigated. Compared with curdlan, the structure of CRDO was not changed measured by FTIR spectrometer and MALDI-TOF MS, and the degree of polymerization (DP) of CRDO obtained was 2 - 19 with the most abundance of DP 5. The reaction condition including the time and temperature of acid hydrolysis was optimized to 105 ℃ for 150-180 min. Therefore, the method described in this study is highly efficient for the rapid degradation of curdlan into CRDO.

Key words: curdlan, curdlan oligomers, fourier transform infrared spectroscopy (FT-IR spectroscopy), matrix assisted laser desorption/ionization- time of flight mass spectrometry (MALDI-TOF MS), high-performance anion-exchange chromatography with pulsed amperometric detection (HPAEC-PAD)

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