高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (7): 1090.

• 论文 • 上一篇    下一篇

糖的基质辅助激光解吸/电离质谱(MALDI-MS)研究

郝春雁1, 马秀俐2, 刘志强1, 季怡萍1, 刘淑莹1, 刘长城2, 孙允秀2, 刘举正2   

  1. 1. 中国科学院长春应用化学研究所, 长春, 130022;
    2. 吉林大学化学系, 长春, 130023
  • 收稿日期:1997-06-24 出版日期:1998-07-24 发布日期:1998-07-24
  • 通讯作者: 刘淑莹
  • 作者简介:郝春雁,女,27岁,博士研究生.
  • 基金资助:

    国家中医药管理局资助课题.

Matrixassisted Laser Desorption/Ionization Mass Spectral Study of Saccharides

HAO Chun-Yan1, MA Xiu-Li2, LIU Zhi-Qiang1, JI Yi-Ping1, LIU Shu-Ying1, LIU Chang-Cheng2, SUN Yun-Xiu2, LIU Ju-Zheng2   

  1. 1. ChangChun Institute of AppLied Chemistry, A caden is Sinica, ChangChun, 130022;
    2. Dep of Chan., JiLin Universilyty, Changchun, 130023
  • Received:1997-06-24 Online:1998-07-24 Published:1998-07-24

摘要: 通过糖类化合物3种常用基质MALDI-MS分析效果的比较以及寡糖和多糖正、负离子MALDI-MS谱的对比,找到了适合糖分析的基质2,5-DHB,探讨了糖类化合物激光解吸/电离条件下形成离子的过程,指出了Na+、K+离子在寡糖分子量测定中的重要作用,借助柱层析分离手段,成功地测出了分子量大于10000的葡聚糖的分子量。

关键词: 基质辅助激光解吸/电离质谱(MALDI-MS), 寡糖, 多糖, 分子量

Abstract: Matrixassisted laser desorption/ionization (MALDI) mass spectra of saccharides with three common matrixes were studied here. It is shown that Na+and K+play important roles in the determination of oligasaccharide molecule weight and the molecular weights(MW) of glucans(dextran) with MW more than 10 000 is determined successfully with the help of column chromatography. By comparing the effects of three matrixes in saccharide analysis and comparing positive ion and negative ion matrixassisted laser desorption/ionization mass spectra of oligo- and polysaccharides, the most suitable matrix for saccharide analysis, 2,5-dihydroxylbezonic acid (DHB), is selected and the ion formation processes of saccharides under matrix-assisted laser adsorption/ionization condition are clarified.

Key words: Matrixassisted laser desorption/ionization mass spectrometry, Oligosaccharide, Polysaccharide, Molecular weight

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