Versatile capillary electrophoresis method for the direct chiral separation of aliphatic and aromatic α-hydroxy acids, ß-hydroxy acids and polyhydroxy acids using vancomycin as chiral selector.
J Chromatogr A
; 1715: 464611, 2024 Jan 25.
Article
em En
| MEDLINE
| ID: mdl-38181629
ABSTRACT
Hydroxy acids (HAs) are ubiquitous in nature and play significant roles in various industrial and biological processes. Most HAs harbor at least one chiral center, therefore the development of efficient chiral analysis techniques for HA stereoisomers is of crucial importance across a wide range of fields. A capillary electrophoresis (CE) method was developed for the chiral analysis and quantification of aliphatic and aromatic αhydroxy acid (AHA) enantiomers, aliphatic ßhydroxy acid (BHA) enantiomers and aliphatic polyhydroxy acid (PHA) stereoisomers. Using a modified partial filling-counter current method with indirect UV detection, high resolution (Rs) was achieved with vancomycin as a chiral selector added to the background electrolyte composed of 10 mM of benzoic acid/L-histidine at pH 5 using a polyacrylamide-coated capillary. This method could be readily applied to the determination of the enantiomers of 12 aliphatic AHAs, 4 aromatic AHAs, 3 aliphatic BHAs, as well as to the determination of the stereoisomers of tartaric acid, 2,3-dihydroxybutanoic acid, 2,3,4,5-tetrahydroxypentanoic acid, and 2,3,4,5,6-pentahydroxyhexanoic acid without the need for sample derivatization. Finally, our study provides a robust and versatile strategy for the chiral and stereoselective analysis of a broad range of hydroxy acid compounds.
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Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Vancomicina
/
Hidroxiácidos
Idioma:
En
Revista:
J Chromatogr A
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Bélgica