食品科学 ›› 2011, Vol. 32 ›› Issue (12): 219-223.doi: 10.7506/spkx1002-6630-201112048

• 分析检测 • 上一篇    下一篇

苯胺柱前衍生麦芽糊精的高效液相色谱-电喷雾质谱分析

逄 鑫,徐 莎,王 珍,黄琳娟,王仲孚*   

  1. 西北大学生命科学学院,西北大学糖生物学与糖工程研究中心,陕西省生物技术重点实验室
  • 出版日期:2011-06-25 发布日期:2011-06-10
  • 基金资助:
    国家“863”计划项目(2007AA10Z338;2007AA091601);教育部“新世纪优秀人才支持计划”项目(NEC7-08-0893); 陕西省重点实验室重点科研计划项目(09JS081)

Separation and Analysis of Maltodextrins by High Performance Liquid Chromatography-Electrospray Ionization Ion-trap Mass Spectrometry Based on Pre-column Derivatization with Aniline

PANG Xin,XU Sha,WANG Zhen,HUNG Lin-juan,WANG Zhong-fu*   

  1. Shaanxi Provincial Key Laboratory of Biotechnology, Glycobiology and Glycotechnology Research Center, College of Life Science, Northwest University, Xi’an 710069, China
  • Online:2011-06-25 Published:2011-06-10

摘要: 研究苯胺柱前衍生寡糖混合物麦芽糊精的高效液相色谱-电喷雾质谱分析方法。优化色谱及质谱分析的条件,采用反相C18色谱柱(4.6mm×250mm,5μm);乙腈和乙酸铵溶液(pH4.5、10mmol/L)为流动相进行梯度洗脱;在239nm波长处检测,并采用高效液相色谱-电喷雾质谱联用技术对寡糖衍生物进行分析,建立苯胺衍生寡糖的高效液相色谱(HPLC)分离分析、电喷雾质谱(ESI-MS)及液相色谱-电喷雾质谱联用(LC-ESI-MS)组分分析方法。在液质联用条件下,麦芽糊精衍生物分离效果良好。该方法衍生化产物稳定,后处理简单,在食品体系寡糖混合物分离分析方面有潜在的应用前景。

关键词: 柱前衍生, 寡糖 , 高效液相色谱-电喷雾质谱, 苯胺

Abstract: A pre-column derivatization method for separating and analyzing oligosaccharides by high performance liquid chromatography-electrospray ionization ion-trap mass spectrometry (HPLC-ESI-MS/MS) was established by using aniline as reductive amination reagent. Under the optimized HPLC-ESI-MS/MS conditions, HPLC separation was carried out on an Elite RP C18 column (4.6 mm × 250 mm, 5μm) with a mobile phase made up of acetonitrile and ammonium acetate (10 mmol/L, pH 4.5) under gradient elution mode and ultraviolet detection was performed at 239 nm. Maltodextrin derivatives were successfully separated and analyzed by HPLC-ESI-MS/MS in a positive ion mode. Stable maltodextrin derivatives and easy post-treatment could be achieved by this method. Hence, we conclude that it has potential application prospects in separation and analysis of oligosaccharides in food matrixes.

Key words: aniline, high performance liquid chromatography-electrospray ionization ion-trap mass spectrometry, pre-column derivatization, oligosaccharides

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