Identification of anomeric configuration of underivatized reducing glucopyranosyl-glucose disaccharides by tandem mass spectrometry and multivariate analysis.

  title={Identification of anomeric configuration of underivatized reducing glucopyranosyl-glucose disaccharides by tandem mass spectrometry and multivariate analysis.},
  author={Joana Simões and P. Domingues and A. Reis and F. Nunes and M. Coimbra and M. Domingues},
  journal={Analytical chemistry},
  volume={79 15},
The possibility of discrimination of the anomeric configuration (alpha or beta) of underivatized reducing glucopyranosyl-glucose disaccharides, using a hybrid mass spectrometer Q-TOF 2 (Micromass), a linear ion trap LXQ (Thermo), and a triple quadrupole Quattro (Micromass) with an electrospray source (ESI) was investigated. Differences observed in the relative abundances of specific product ions obtained from collisionally induced dissociation of the [M + Li]+ adducts were statistically… Expand
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The results showed that HCD-MS/MS is an ideal tool for differentiating lithium adducts, whereas, CID-MS /MS is better for discriminating sodium adductions. Expand
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