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Analysis of carbohydrates in plants by high-performance anion-exchange chromatography coupled with electrospray mass spectrometry

Abstract : Amass spectrometer was coupled to high-performance anion-exchange chromatography (HPAEC) with the help of electrochemical neutral- ization of the eluent and post-column addition of lithiumchloride for carbohydrate analysis. Parallel selective channels (single ionmonitoring) were used to decrease the detection limits and separate unresolved peaks. The mass specific detection allowed the simultaneous analysis of a wide range of sugar alcohols, mono-, di- and oligosaccharides. Carbohydrates extracted from leaves of poplar submitted to drought stress were analyzed using pulsed amperometric detection (PAD), then mass spectrometry. It allowed the confirmation of peak attribution and the identification of salicin as a major compound in the extracts. Different responses to water deficit and re-hydration were obtained for several carbohydrates, suggesting different roles in osmoprotection processes.
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Cédric Guignard, Laurent Jouve, Marie-Béatrice Bogeat-Triboulot, Erwin Dreyer, Jean-François Hausman, et al.. Analysis of carbohydrates in plants by high-performance anion-exchange chromatography coupled with electrospray mass spectrometry. Journal of Chromatography A, Elsevier, 2005, 1085 (1), pp.137-142. ⟨10.1016/j.chroma.2005.05.068⟩. ⟨hal-02678625⟩

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