Analysis of carbohydrates in plants by high-performance anion-exchange chromatography coupled with electrospray mass spectrometry.
A mass spectrometer was coupled to high-performance anion-exchange chromatography (HPAEC) with the help of electrochemical neutralization of the eluent and post-column addition of lithium chloride for carbohydrate analysis. Parallel selective channels (single ion monitoring) 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.
Guignard
Cédric
C
Public Research Center--Gabriel Lippmann, Environment and Biotechnologies Research Unit, 41 rue du Brill, L-4422 Belvaux, Luxembourg. guignard@lippmann.lu
Jouve
Laurent
L
Bogéat-Triboulot
Marie Béatrice
MB
Dreyer
Erwin
E
Hausman
Jean-François
JF
Hoffmann
Lucien
L
D000837:Anion Exchange Resins; D001592:Benzyl Alcohols / Q000032:analysis; D002241:Carbohydrates / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002852:Chromatography, Ion Exchange / Q000295:instrumentation / Q000379:methods*; D005960:Glucosides; D006601:Hexoses / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry / Q000187:drug effects; D032107:Populus / Q000737:chemistry* / Q000187:drug effects; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014867:Water / Q000494:pharmacology
D000837:Anion Exchange Resins; D001592:Benzyl Alcohols; D002241:Carbohydrates; D005960:Glucosides; D006601:Hexoses; D014867:Water; C005696:salicin