Vacuum ultraviolet action spectroscopy of polysaccharides

J Am Soc Mass Spectrom. 2013 Aug;24(8):1271-9. doi: 10.1007/s13361-013-0657-2. Epub 2013 May 31.

Abstract

We studied the optical properties of gas-phase polysaccharides (maltose, maltotetraose, and maltohexaose) ions by action spectroscopy using the coupling between a quadrupole ion trap and a vacuum ultraviolet (VUV) beamline at the SOLEIL synchrotron radiation facility (France) in the 7 to 18 eV range. The spectra provide unique benchmarks for evaluation of theoretical data on electronic transitions of model carbohydrates in the VUV range. The effects of the nature of the charge held by polysaccharide ions on the relaxation processes were also explored. Finally the effect of isomerization of polysaccharides (with melezitose and raffinose) on their photofragmentation with VUV photons is presented.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbohydrate Sequence
  • Glycosides / chemistry
  • Isomerism
  • Molecular Sequence Data
  • Photochemistry
  • Polysaccharides / analysis*
  • Spectrophotometry, Ultraviolet
  • Synchrotrons
  • Vacuum

Substances

  • Glycosides
  • Polysaccharides