ELECTROSPRAY MASS-SPECTROMETRY OF NEUTRAL AND ACIDIC OLIGOSACCHARIDES- METHYLATED CYCLODEXTRINS AND IDENTIFICATION OF UNKNOWNS DERIVED FROM FRUIT MATERIAL

A qualitative study of the characteristics in the mass spectrometric a nalysis of various neutral and acidic oligosaccharides using electrosp ray ionization is reported. Experiments were performed in both positiv e- and negative-ion modes. In the positive-ion mode molecular mass inf ormation for neutral non-derivatized oligosaccharides could be obtaine d UP to M(r) 4000. The method was applied to the determination of the degree of methylation of methylated beta-cyclodextrins and the identif ication of unknown oligosaccharides enzymatically derived from pear an d apple fruit material.