| 仿刺参皂苷类化合物的电喷雾负离子质谱裂解规律研究 |
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| 引用本文： | 于林芳,徐杰,陈士国,薛勇,王静凤,李兆杰,薛长湖.仿刺参皂苷类化合物的电喷雾负离子质谱裂解规律研究[J].质谱学报,2011,32(2):77-81. |
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| 作者姓名： | 于林芳 徐杰 陈士国 薛勇 王静凤 李兆杰 薛长湖 |
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| 作者单位： | 中国海洋大学，食品科学与工程学院，山东 青岛266003 |
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| 基金项目： | 国家自然科学基金(31000795); 海洋公益性行业科研专项(201105029); 国际科技合作项目(2010DFA31330)资助 |
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| 摘 要： | 采用电喷雾-四极杆-飞行时间质谱（ESI-Q-TOF MS）在负离子检测方式下，对仿刺参中４种皂苷类成分的裂解途径进行研究。通过ESI MS产生的M-H]-获得相应化合物的相对分子质量信息，对M-H]-进行碰撞诱导解离（CID）获得相应化合物的裂解途径信息。研究发现，4种皂苷化合物的ESI-MS/MS裂解规律相同，首先断裂苷元上的18(20)内酯键，然后连续丢失糖链的末端单糖，最后生成苷元的特征碎片离子 m/z 423，这些特征有助于皂苷类化合物的结构解析。
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| 关 键 词： | 仿刺参 皂苷 质谱 裂解规律 |
Study on the Fragmentation Pathways of Triterpene Glycosides from Apostichopus japonicus Selenka by Negative Electrospray Ionization Mass Spectrometry |
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| YU Lin-fang,XU Jie,CHEN Shi-guo,XUE Yong,WANG Jing-feng,LI Zhao-jie,XUE Chang-hu.Study on the Fragmentation Pathways of Triterpene Glycosides from Apostichopus japonicus Selenka by Negative Electrospray Ionization Mass Spectrometry[J].Journal of Chinese Mass Spectrometry Society,2011,32(2):77-81. |
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| Authors: | YU Lin-fang XU Jie CHEN Shi-guo XUE Yong WANG Jing-feng LI Zhao-jie XUE Chang-hu |
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| Affiliation: | College of Food Science and Technology, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The fragmentation pathways of four triterpene glycosides from Apostichopus japonicus Selenka were investigated in negative ion mode by ESI-Q-TOF MS.The -ions were observed by ESI-MS,from which the molecular weights were obtained.The collision induced dissociation(CID) data of the -ions provide fragmentation pathways of the triterpene glycosides.Results show that four compounds have the same fragmentation pathway.The cleavage is initiated by a loss of 18(20)-lactone residue from the aglycon,then consecutivel... |
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| Keywords: | Apostichopus japonicus Selenka triterpene glycosides mass spectrometry fragmentation pathways |
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