A study of the collision-induced dissociation post-source decay (PSD) spectra of free oligosaccharides is presented. These spectra, when obtained with helium as collision gas, show X-1,X-5 fragments containing the reducing end sugar. The presence of these fragments permits Y ions and, consequently, B and C peaks to be identified, This is a common behaviour from which it has been possible to delineate a general method for the easy assignment of the peaks in PSD spectra of underivatized neutral sugars, allowing the sequence of a real unknown to be obtained. Copyright (C) 2000 John Wiley & Sons, Ltd.
Sequencing of olgiosaccharides by collision-induced dissociation matrix-assisted laser desorption/ionization mass spectrometry
GAROZZO, DOMENICO
2000-01-01
Abstract
A study of the collision-induced dissociation post-source decay (PSD) spectra of free oligosaccharides is presented. These spectra, when obtained with helium as collision gas, show X-1,X-5 fragments containing the reducing end sugar. The presence of these fragments permits Y ions and, consequently, B and C peaks to be identified, This is a common behaviour from which it has been possible to delineate a general method for the easy assignment of the peaks in PSD spectra of underivatized neutral sugars, allowing the sequence of a real unknown to be obtained. Copyright (C) 2000 John Wiley & Sons, Ltd.File in questo prodotto:
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