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首页> 外文期刊>Journal of Pharmaceutical and Biomedical Analysis: An International Journal on All Drug-Related Topics in Pharmaceutical, Biomedical and Clinical Analysis >An efficient approach to identify different chemical markers between fibrous root and rhizome of Anemarrhena asphodeloides by ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry with multivariate statistical analysis
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An efficient approach to identify different chemical markers between fibrous root and rhizome of Anemarrhena asphodeloides by ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry with multivariate statistical analysis

机译：超高效液相色谱-四极杆飞行时间串联质谱联用多变量统计分析法鉴别知母知母纤维根和根状茎中不同化学标记的有效方法

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An ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry approach coupled with multivariate statistical analysis was established and applied to rapidly distinguish the chemical differences between fibrous root and rhizome of Anemarrhena asphodeloides. The datasets of t(R)-m/z pairs, ion intensity and sample code were processed by principal component analysis and orthogonal partial least squares discriminant analysis. Chemical markers could be identified based on their exact mass data, fragmentation characteristics, and retention times. And the new compounds among chemical markers could be isolated rapidly guided by the ultra high-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry and their definitive structures would be further elucidated by NMR spectra. Using this approach, twenty-four markers were identified on line including nine new saponins and five new steroidal saponins of them were obtained in pure form. The study validated this proposed approach as a suitable method for identification of the chemical differences between various medicinal parts in order to expand medicinal parts and increase the utilization rate of resources. (C) 2016 Elsevier B.V. All rights reserved.
机译：建立了一种超高效液相色谱四极杆飞行时间串联质谱方法，并将其用于多变量统计分析，并用于快速区分知母知母的纤维根和根茎之间的化学差异。通过主成分分析和正交偏最小二乘判别分析处理t（R）-m / z对，离子强度和样品编码的数据集。可根据化学标记物的准确质量数据，碎片特征和保留时间对其进行鉴定。超高效液相色谱四极杆飞行时间串联质谱可以快速分离化学标记物中的新化合物，并通过NMR光谱进一步阐明它们的确定结构。使用这种方法，在线鉴定了二十四个标记物，包括九个新的皂苷，并且以纯净形式获得了其中的五个新的甾体皂苷。该研究验证了该方法是一种识别各种药用成分之间化学差异的合适方法，以扩展药用成分并提高资源利用率。 （C）2016 Elsevier B.V.保留所有权利。

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