Abstract
This study aimed to analyze the chemical components of Zizyphi Spinosae Semen by using ultra high performance liquid chromatography-linear ion trap/orbitrap high resolution mass spectrometry (UHPLC-LTQ-Orbitrap-MS). The chromatographic separation of the components was achieved on a Waters Acquity UPLC BEH-C₁₈ column (2.1 mm×50 mm, 1.7 μm), with acetonitrile-water (0.1% formic acid) as mobile phase at a flow rate of 0.3 mL·min⁻¹. Electrospray ionization-(ESI) source was applied and operated in negative ion mode. The parent ion list (PIL)-MS₂ and high energy collision dissociation (HCD) techniques were used to identify triterpene saponins in Zizyphi Spinosae Semen. Through analysis of the mass spectrometry data and literature data, 24 compounds and 4 unknown compounds were identified and inferred, including 21 flavonoids, 5 saponins and 2 triterpenoids. The use of UHPLC-LTQ-Orbitrap-MS technology provide an efficient and rapid analytical method for the qualitative analysis and quality control of the chemical components in Zizyphi Spinosae Semen. It can also provide reference data for the research on the material basis of pharmacodynamics and the resources development and utilization.
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