Gas chromatographic determination of 1- and 3-methylhistidine in biological fluids.
J Chromatogr
; 423: 33-40, 1987 Dec 25.
Article
in En
| MEDLINE
| ID: mdl-3443668
ABSTRACT
A gas chromatographic method for the determination of 1- and 3-methylhistidine in biological fluids was developed. The amino acid fraction containing 1- and 3-methylhistidine was isolated using ion-exchange chromatography. The amino acids were derivatized to N-trifluoroacetyl-O-isobutyl esters and analysed by gas chromatography with micropacked or capillary columns and an ionization-resonance detector. The conditions for the acylation of the histidines were studied and analyses of various derivatives such as N-trifluoroacetates, N-pentafluoropropionates and N-heptafluorobutyrates were tested. The detection limit of 1- and 3-methylhistidine was 50 ng per sample.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Histidine
/
Methylhistidines
Limits:
Humans
Language:
En
Journal:
J Chromatogr
Year:
1987
Document type:
Article