Gas Chromatographic Determination of Trimethylsilyl Derivatives of Free Amino Acids from a Botanical Source
作者:
J.L. Laseter,
J.D. Weete,
A. Albert,
C.H. Walkinshaw,
期刊:
Analytical Letters
(Taylor Available online 1971)
卷期:
Volume 4,
issue 10
页码: 671-681
ISSN:0003-2719
年代: 1971
DOI:10.1080/00032717108058665
出版商: Taylor & Francis Group
关键词: gas chromatography;mass spectrometry;amino acid;tobacco tissue culture;silylation
数据来源: Taylor
摘要:
The application of gas chromatography for the separation of TMS-amino acids from a botanical source was demonstrated. The trimethyl-silyl derivatives of the extracts from germ free tobacco tissue cultures were prepared by reacting amino acid extracts with bis(trimethylsilyl)-trifluoroacetamide (BSTFA) using acetonitrile as a reaction solvent following preliminary separation of the free acids by ion exchange chromatography. Gas chromatographic separation was accomplished with a 10% OV-11 glass column and temperature programming. The findings compare favorably with other chromatographic methods. Structures of the TMS-amino acids were confirmed by gas chromatography-mass spectrometry combination. Mass spectral data for each derivative is presented for the principal protein amino acids observed as well as γ-aminobutyric acid, asparagine, α-aminobutyric acid and β-alanine.
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