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- W4386401762 abstract "Enantioselective amino acid analysis is gaining increasing importance in pharmaceutical, biomedical and food sciences. While there are many methods available for enantiomer separation of amino acids, the simultaneous analysis of all chiral proteinogenic amino acids by a single method with one column and a single condition is still challenging. Herein, we report an enantioselective high-performance liquid chromatography-tandem mass spectrometry (LC-MS) assay using Chiralpak QN-AX as chiral column. With 6-aminoquinolyl-N-hydrosysuccinimidyl carbamate (AQC) as derivatization reagent, efficient enantioselective separation of D- and L-amino acids using HPLC has become possible. Thiol-containing amino acids like Cys are alkylated prior to AQC-labelling. A protocol for automated sample preparation including both derivatization step and calibrator preparation is presented. For compensating matrix effects, u-13C15N-labelled internal standards (IS) were employed. The method was validated and applied to the enantioselective analysis of amino acids in a bacterial fermentation broth." @default.
- W4386401762 created "2023-09-04" @default.
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- W4386401762 date "2023-10-01" @default.
- W4386401762 modified "2023-10-16" @default.
- W4386401762 title "Automated Sample Preparation with 6-Aminoquinolyl-N-hydroxysuccinimidyl Carbamate and Iodoacetamide Derivatization Reagents for Enantioselective Liquid Chromatography Tandem Mass Spectrometry Amino Acid Analysis" @default.
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- W4386401762 doi "https://doi.org/10.1016/j.chroma.2023.464349" @default.
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