Читать книгу Polysaccharides - Группа авторов - Страница 24

The MS technique [39], in conjunction with NMR, can yield data elucidating molecular structures. Simões et al. [40] conducted the first study on the structural characteristics of acemannan using the technique to provide an acetylation profile of commercially available bioactive acemannan and was first to observe the presence of arabinose residues in this structure. Electrospray ionization mass spectrometry (ESI-MS) and Tandem Mass Spectrometry (MS/MS) of oligosaccharides from acemannan showed that the molecule was highly acetylated. This mannan contained, on average, two acetyl groups per sugar unit, double that reported by other authors.