NDLI: Interactions between D,L dansyl amino acids and immobilized teicoplanin: Study of the dual effect of sodium citrate on chiral recognition

Content Provider	Springer Nature Link
Author	Peyrin, E. Ravel, A. Grosset, C. Villet, A. Ravelet, C. Nicolle, E. Alary, J.
Copyright Year	2001
Abstract	The binding of a series of D,L dansyl amino acids (used as test solutes) to immobilized teicoplanin has been investigated over a wide range of sodium citrate buffer concentrations,c (2.5×10−3 to 10−1 M). An approach based on the use of both the Gibbs adsorption isotherm and a solute displacement model was used to describe solute behavior in this chromatographic system. Variation of thermodynamic quantities was calculated from Van't Hoff plots to enable understanding of the forces driving solute association with the teicoplanin phase. An enthalpyentropy compensation study was also performed for further exploration of the interaction mechanisms. The results suggested that variations of solute retention whenc changed were governed by both (i) the salting-out effect of the salt and (ii) competitive displacement of the dansyl amino acids from their teicoplanin binding site by the citrate anion. The study also shows that hydrophobic interactions and hydrogen-bond formation are important to chiral discrimination in this chromatographic system.
Starting Page	645
Ending Page	650
Page Count	6
File Format	PDF
ISSN	00095893
Journal	Chromatographia
Volume Number	53
Issue Number	11-12
e-ISSN	16121112
Language	English
Publisher	Vieweg Verlag
Publisher Date	2001-01-01
Publisher Place	Wiesbaden
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Column liquid chromatography Immobilized teicoplanin Dansyl amino acids Hydrophobic effect Hydrogen bonds Analytical Chemistry Organic Chemistry Pharmacy Biochemistry Plant Sciences Measurement Science, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Analytical Chemistry Biochemistry Clinical Biochemistry

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