Enantioseparation of amino acids and alpha-hydroxy acids on ligand-exchange continuous beds by capillary electrochromatography.

Patrycja Puchalska, Elfriede Pittler, Marek Trojanowicz, Gerald Gübitz, Martin G Schmid

Index: Electrophoresis 31 , 1517-1520, (2010)

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Abstract

A new chiral stationary phase based on continuous bed (CB) technology using L-prolinamide as a chiral selector was prepared. Its ability for enantioseparation of amino acids and alpha-hydroxy acids by ligand-exchange CEC was compared with that of a CB containing L-4-hydroxyproline as chiral selector. Preparation was done by a one-step in situ copolyermerization procedure using methacrylamide as monomer, vinylsulfonic acid as charge providing agent and piperazine diacrylamide as crosslinker. L-Prolinamide showed marked enantioselective properties for the separation of amino acids and alpha-hydroxy acids. Furthermore, we show the possibility of simultaneous enantioseparation of amino acids and alpha-hydroxy acids using the CB with L-4-hydroxyproline as chiral selector.