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Some β-galactosidases (EC 3.2.1.23) are capable of producing mixtures of linear and branched galacto-oligosaccharides (GOS) with various types of glycosidic linkages [degree of polymerization (DP) 2–8; mainly GalnGlc] when incubated under specific conditions with lactose. These products are generally applied in infant formula. However, for most galacto-oligosaccharide products only major components...
An NMR study of proton chemical shift patterns of known linear α-d-glucopyranose di- and trisaccharide structures was carried out. Chemical shift patterns for (α1→2)-, (α1→3)-, (α1→4)- and (α1→6)-linked d-glucose residues were analysed and compared to literature data. Using these data, a 1 H NMR structural-reporter-group concept was formulated to function as a tool in the structural analysis...
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