Search results for "UPLC–QqTOF-MS"

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Profiling of compounds and degradation products from the postharvest treatment of pears and apples by ultra-high pressure liquid chromatography quadr…

2010

This study deals with a simple strategy to pinpoint potential unknown compounds in full scan mass spectrometry (MS) experiments. Forty samples of apples and pears intended for human consumption were analyzed by ultra-high performance liquid chromatography quadrupole-time-of-flight (UPLC–QqTOF-MS), after extraction of the possible contaminants by rinsing the peel of the fruit with ethyl acetate. The peaks were visually recognized in the total ion chromatogram (TIC). Two major types of postharvest treatments were detected in this set of samples: imazalil (IMZ)/ethoxyquin (EQ) and thiabendazole (TBZ)/diphenylamine (DPA). The present work also describes the metabolites formed by degradation of …

Time FactorsFood HandlingMetaboliteEthyl acetateFood ContaminationMass spectrometryHigh-performance liquid chromatographyUnknown identificationMass SpectrometryAnalytical ChemistryFood safetyPyruschemistry.chemical_compoundMetabolite confirmationChromatography High Pressure LiquidPostharvest treatmentsEthoxyquinChromatographyUPLC–QqTOF-MSfungiPesticide ResiduesDiphenylamineAgricultureMass chromatogramFungicides IndustrialchemistryMalusPostharvest

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