Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1487, Issue -, Pages 194-200Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2017.01.060
Keywords
alpha- and beta -Hydroxycarboxylic acid; Enantioselective chromatography; Chiral ion-exchangers; Zwitterionic ion-exchangers; cryo-HPLC; Enantioselective metabolomics
Funding
- Struktur- und Innovations-fonds fur die Forschung (SI-BW) by the regional government of Baden-Wurttemberg (Ministry of Science, Research and Arts)
- DAAD doctoral fellowship (DAAD) [57129429]
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Chiral short chain aliphatic hydrocarboxylic acids (HCAs) are common compounds being part of different biological processes. In order to control and understand these processes is of pivotal importance to determine the identity of the involved enantiomer or their enantiomeric ratio. In this study the capacity of quinine-and quinidine-derived chiral stationary phases to perform the enantioseparation of eight chiral HCAs (tartaric acid, isocitric acid, malic acid, glyceric acid, 2-hydroxyglutaric acid, 2-hydroxybutyric acid, lactic acid and 3-hydroxybutyric acid) was evaluated. MS-compatible conditions consisting of ACIV/Me0H mixtures as eluents with formic acid, acetic acid and/or their ammonium salts as additives, temperatures between 10 and 25 degrees C (except for 20 degrees C for 3-hydroxybutyric acid) and a flow rate of 1.00 mL/min yielded full baseline resolution for all studied 1-ICAs. Elution order for the HCA enantiomers was determined revealing different behaviors between the studied compounds. (C) 2017 Elsevier B.V. All rights reserved.
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