Optimized liquid chromatography-mass spectrometry approach for the isolation of minor stress biomarkers in plant extracts and their identification by capillary nuclear magnetic resonance.

Abstract

A LC-MS approach is presented for the isolation of minor key plant biomarkers, in view of their characterization by NMR at the microgram scale. Due to the complexity of plant extracts, the purification of metabolites present in low concentrations is critical. The strategy used relies on the optimization of the chromatographic analysis using ultra-performance liquid chromatography-time-of-flight mass spectrometry (UPLC-TOF-MS), thanks to modelling software. The optimized method is then transferred to semi-preparative LC conditions with MS detection. The approach is illustrated by the isolation of wound-induced jasmonate derivatives revealed by a metabolomic study in Arabidopsis thaliana leaves and their subsequent characterization by capillary NMR (CapNMR).

• Authors: Gaetan Glauser, Davy Guillarme, Elia Grata, Julien Boccard, Aly Thiocone, Pierre-Alain Carrupt, Jean-Luc Veuthey, Serge Rudaz, Jean-Luc Wolfender
• Journal: Journal of chromatography. A (J Chromatogr A) Vol. 1180 Issue 1-2 Pg. 90-8 (Feb 08 2008) ISSN: 0021-9673 [Print] Netherlands
• PMID: 18177881 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Biomarkers
• Plant Extracts

Topics

• Arabidopsis (chemistry)
• Biomarkers (analysis)
• Chromatography, High Pressure Liquid (methods)
• Magnetic Resonance Spectroscopy (methods)
• Plant Extracts (chemistry)
• Spectrometry, Mass, Electrospray Ionization (methods)