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Determination of 19 polyphenolic compounds in tea by ultra-high performance liquid chromatography combined with quadrupole-time of flight mass spectrometry

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Food Science and Human Wellness 2022年第3期11卷 719-726页

作者： Jian Li Junmei Ma Yan Zhang Lei Zheng School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China College of Applied Arts and Science Beijing Union UniversityBeijing 100191China Hebei Key Laboratory of Forensic Medicine College of Forensic MedicineHebei Medical UniversityShijiazhuang 050017China Hebei Food Safety Key Laboratory Hebei Food Inspection and Research InstituteShijiazhuang 050227China

A rapid method was presented for the determination of 19 polyphenols in tea by ultra-high performance liquid chromatography coupled with quadrupole-time of flight mass spectrometry(UPLC-Q-TOF MS).Tea samples were extracted by 50%(V/V)ethanol,then separated by Waters Acquity BEH C18 column using a binary solvent system composed of acetonitrile and water(0.1%formic acid)by gradient *** analytes were determined by Q-TOF MS in TOF MS and information dependent acquisition(IDA)-MS/MS *** results showed that mass accuracy error of the 19 polyphenols were lower than 5.0×10^(-6),good linear relationship was got in range of 0.2–500μg/L and correlation coefficient was higher than *** LOD was in the range of 0.002–0.100 mg/kg and the LOQ was in the range of 0.004–0.200 mg/*** of the method was in range of 78.4%–109.2%with spike levels of 0.004–2.000 mg/kg,relative standard deviations were lower than 10%.The method was simple,rapid and *** could be used for the rapid screening and quantitative analysis of 19 polyphenols in tea.

关键词： Ultra-high performance liquid chromatography quadrupole-time of flight mass spectrometry Tea Polyphenols

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