PDF全文下载：2011060635
金欣， 赵淑芳
(青岛科技大学 化工学院，山东 青岛 266042)
摘要: 采用电喷雾质谱法（ESI-MS）分析了多元醇葡糖苷的组成与结构。在电喷雾质谱中，多元醇葡糖苷按照不同的糖基取代度被离子化：在负离子模式下，各组分主要以去质子离子\[M-H\]-的形式被观察到；在正离子模式下，多元醇葡糖苷中的各组分能够以质子化分子离子\[M+H\]+或阳离子加合物\[M+NH4\]+、\[M+Na\]+和\[M+K\]+的形式被检测到。研究结果表明，ESI-MS法可定性分析多元醇葡糖苷中单苷、二苷和多苷的分布情况，是一种快速分析强极性糖苷类混合物组成与结构的有效方法。
关键词: 电喷雾质谱； 糖苷； 多元醇
中图分类号: O 657.63文献标志码： A
Analysis of Polyol Glycosides by Electrospray Ionization Mass Spectrometry
JIN Xin, ZHAO Shu-fang
(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: The components and structures of polyol glycosides were analyzed by ESI-MS method. The polyol glycosides molecules were ionized according to their different number of glucose units. Individual components could be detected mainly as deprotonated ion \[M-H\]- in negative-ion mode and as cationized ions \[M+H\]+, \[M+NH4\]+, \[M+Na\]+ or \[M+K\]+ in positive-ion mode. The results show that ESI-MS can be used to analyze the distribution of polymerization degree of glucose units qualitatively and is a highly sensitive analysis technique for rapid detection of polar products such as glycosides.
Key words:electrospray ionization mass spectrometry(ESI-MS); glycoside; polyol
收稿日期:2011-03-24
基金项目： 青岛科技大学引进人才基金资助项目（2006）.
作者简介: 金欣（1971—），男，副教授.
