A fast UHPLC-DAD-FLD method was developed and applied for the profiling of different extracts of O. europaea organs as well as for the quantification of oleuropein. In addition, a dereplication strategy was developed using an Orbitrap platform (UHPLC-ESI-HRMS/MS) aiming to further ...
rubra seeds using ultra-high performance liquid chromatography coupled to diode array detection and electrospray ionization high-resolution mass spectrometry (UHPLC-DAD-ESI-HRMS/MS), and to investigate the transformation of these compounds during roasting. The results of this study not only showed that...
因此,本实验采用超高效液相色谱-四极杆-静电场轨道阱高分辨质谱(UHPLC-Q- Orbitrap HRMS)技术[6]结合多变量模式识别方法[主成分分析(principal component analysis,PCA)与正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)]对马蓝叶在不同干燥方式下进行系统评价,寻找差异化学...
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All the three bioactive extracts were subjected to HPLC-DAD and UHPLC-ESI()-HRMS & MS/MS dereplication procedures for correlation purposes. Interesting comparative results related to known constituents such as naphodianthrones, phloroglucinol derivatives and flavonoids were elucidated. To our knowledge,...
Ultra-high performance liquid chromatography-diode array detection-quadrupole time of flight mass spectrometry (UHPLC-DAD-HRMS) with auto- tandem high resolution mass spectrometry (MS/HRMS) analysis was used to screen the extracts and subsequently, MS/HRMS data was matched against a newly constructed...
2.5基于UHPLC-Q-Orbitrap HRMS的化学成分分析 2.5.1混合对照品溶液的制备精密称取对照品DL-精氨酸、缬氨酸、DL-正亮氨酸、吲哚苷、靛红、松脂素-β- D-吡喃葡萄糖苷、毛蕊花糖苷、吲哚、靛蓝、靛玉红于25 mL量瓶中,加入适量DMSO,超声(150 W、40 kHz)溶解后用DMSO溶剂定容。取1 mL溶液于5 mL量瓶中,用色...
HPLC-DAD and UHPLC-ESI(−)-HRMS & MS/MS Plant material All extracts were obtained from the in-house library of extracts of the Department of Pharmacognosy and Natural Products Chemistry of the University of Athens. Voucher specimens have been kept at the Herbarium of the Department. ...