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首页> 外文期刊>Journal of mass spectrometry: JMS >Negative ion electrospray high-resolution tandem mass spectrometry of polyphenols
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Negative ion electrospray high-resolution tandem mass spectrometry of polyphenols

机译：多酚的负离子电喷雾高分辨率串联质谱

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摘要

Representative compounds with a 1,3-dihydroxybenzene substructure belonging to different important polyphenol classes (stilbenes, flavones, isoflavones, flavonols, flavanones, flavanols, phloroglucinols, anthraquinones and bisanthraquinones) were investigated based on detailed high-resolution tandem mass spectrometry measurements with an Orbitrap system under negative ion electrospray conditions. The mass spectral behaviour of these compound classes was compared among each other not only with respect to previously described losses of CO, CH2CO and C3O2 but also concerning the loss of CO2 and successive specific fragmentations. Furthermore, some unusual fragmentations such as the loss of a methyl radical during mass spectral decomposition are discussed. The obtained results demonstrate both similarities and differences in their mass spectral fragmentation under MSn conditions, allowing a characterization of the corresponding compound type. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：根据详细的高分辨率串联质谱法（使用Orbitraprap进行测量），研究了具有1,3-二羟基苯亚结构的代表化合物，这些亚结构属于不同的重要多酚类别（对苯二甲酸酯，黄酮，异黄酮，黄酮醇，黄烷酮，黄烷醇，间苯三酚，蒽醌和双蒽醌）系统在负离子电喷雾条件下。不仅就先前描述的CO，CH2CO和C3O2的损失，而且还涉及CO2的损失和连续的特定碎片，对这些化合物类别的质谱行为进行了相互比较。此外，还讨论了一些异常的断裂，例如在质谱分解过程中甲基的丢失。获得的结果证明了在MSn条件下质谱裂解的相似性和差异性，从而可以表征相应的化合物类型。版权所有（c）2015 John Wiley＆Sons，Ltd.

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