Extraction and quantitative analysis of 1-aminocyclopropane-1-carboxylic acid in plant tissue by gas chromatography coupled to mass spectrometry |
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Authors: | Smets Rafaël Claes Veerle Van Onckelen Henri A Prinsen Els |
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Institution: | Department of Biology, University of Antwerp (UIA), Universiteitsplein 1, B-2610 Antwerp, Belgium. |
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Abstract: | We developed a new method for the determination of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) using quantitative GC-negative chemical ionisation MS as a detection and quantification system, in combination with isotope dilution using 2H4]ACC and an off-line solid-phase extraction. By derivatisation with pentafluorobenzyl bromide, ACC could easily be detected with m/z 280 being the most abundant ion. Determination of this component resulted in a detection limit of 10 fmol and a linear fit in the 100 fmol-100 pmol range. The combination of a rapid, high yield purification method with a stable derivatisation procedure and a sensitive detection method allowed the detection of ACC in samples as low as 100 mg fresh mass. |
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