کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1193904 1492280 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure characterization and identification of steroidal saponins from the rhizomes of Anemarrhena asphodeloides by ultra performance liquid chromatography and hybrid quadrupole time-of-flight mass spectrometry
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Structure characterization and identification of steroidal saponins from the rhizomes of Anemarrhena asphodeloides by ultra performance liquid chromatography and hybrid quadrupole time-of-flight mass spectrometry
چکیده انگلیسی


• UPLC/Qtof MSE was used to separate and identify steroidal saponins from Anemarrhenae.
• Fragmentation patterns for six major groups of known saponins were investigated.
• 67 saponins, including 16 groups of isomers, were identified by this method.
• 14 saponins were identified as new compounds.

In this work, ultra performance liquid chromatography (UPLC) coupled with a hybrid quadrupole time-of-flight mass spectrometry (Q-TOF MSE) was used to separate and identify steroidal saponins from the crude extracts of Anemarrhena asphodeloides. The fragmentation patterns of seven known steroidal saponins, which could be classified into six types, were investigated by UPLC/Qtof MSE technique in both negative and positive ion modes. By using this strategy, both intact precursor and fragment ion information were obtained from a single injection. Based on the exact mass, fragment ions, and retention times of peaks, and comparison with reference standards and known compounds in the literature, sixty-seven steroidal saponins were identified or tentatively identified from A. asphodeloides. This included sixteen groups of isomers. Fourteen of these saponins were identified as new compounds. This study provides a good example for the rapid identification of chemical constituents in complex samples such as TCM by UPLC/Qtof MSE, in the mean time, avoiding the time-consuming and tedious purification of compounds from the crude extracts.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volumes 341–342, 1 May 2013, Pages 7–17
نویسندگان
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