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Anal Biochem. 1989 Apr;178(1):17-21.

Amino acid analysis by high-performance liquid chromatography after derivatization with 1-fluoro-2,4-dinitrophenyl-5-L-alanine amide.

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Biochemisches Institut der Universit├Ąt Z├╝rich, Switzerland.


Amino acids are quantitatively determined by precolumn derivatization with 1-fluoro-2,4-dinitrophenyl-5-L-alanine amide and reversed-phase high-performance liquid chromatography with photometric detection at 340 nm. Excellent chromatographic resolution of a mixture of the derivatives of 20 amino acids including proline and cystine is achieved within 110 min by linear gradient elution with acetonitrile in 13 mM trifluoroacetate plus 4% (by vol) tetrahydrofuran. The limit of detection is 50 pmol. Amino acid analyses of acid hydrolysates of the several proteins gave results equivalent to those obtained by conventional ion-exchange-based amino acid analysis. The simplicity of the procedure allows its use on any multipurpose high-performance liquid chromatographic system.

[Indexed for MEDLINE]

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