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• W1902840537 abstract "Ion suppression/enhancement caused by matrix effects continues being a major concern in liquid chromatography–mass spectrometry (LC–MS). This research explores the ability of a supramolecular solvent (SUPRAS) made up of inverted hexagonal aggregates of oleic acid to behave as a liquid with restricted access properties (SUPRAS-RAM). Fusarium toxins in cereals were extracted with the oleic acid-based SUPRAS-RAM prior to their quantification by LC-electrospray ionization (ESI)-ion trap-MS (LC-ESI-IT-MS) in order to investigate the capability of this solvent to remove or reduce ionization suppression and/or enhancement in the analysis of complex samples by MS. The method involved the vortex-shaking of 300 mg of cereal with 600 μL of the SUPRAS-RAM for 15 min, centrifugation for separation of the supernatant and quantitation by LC-ESI-IT-MS. Macromolecules such as proteins and carbohydrates were excluded from extraction by chemical and physical mechanisms. Extraction of analytes and sample clean-up were thus carried out in a single step. No evaporation of the extracts was needed. Method detection limits for the legislated Fusarium toxins [i.e. deoxynivalenol (DON), zearalenone (ZEA) and fumonisins B1 (FB1) and B2 (FB2)] were 15 μg kg−1 for DON and ZEA and 8 μg kg−1 for fumonisins. These values were far below the maximum levels set by the European Commission for these toxins in foodstuffs. The method was successfully applied to the determination of these toxins in wheat and maize harvested in the South of Spain. No contamination of Fusarium toxins was found in samples at detectable levels. Recoveries in spiked samples were in the range 87–105%, with relative standard deviations between 1 and 7%. The use of the oleic acid-based SUPRAS-RAM effectively removed matrix interferences and allowed reliable quantitation of Fusarium toxins in cereals using solvent-based calibration." @default.
• W1902840537 created "2016-06-24" @default.
• W1902840537 creator A5033969871 @default.
• W1902840537 creator A5071295571 @default.
• W1902840537 date "2016-02-01" @default.
• W1902840537 modified "2023-10-18" @default.
• W1902840537 title "Restricted access supramolecular solvents for removal of matrix-induced ionization effects in mass spectrometry: Application to the determination of Fusarium toxins in cereals" @default.
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• W1902840537 doi "https://doi.org/10.1016/j.talanta.2015.11.014" @default.
• W1902840537 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26653462" @default.
• W1902840537 hasPublicationYear "2016" @default.
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