the characterization of oligosaccharide fragments resulting from acid hydrolysis , smith degradation and alkaline degradation of the o-polysaccharide , together with 1h-nmr and 13c-nmr spectroscopic data of the polysaccharide , led to the following structure for the repeating units : -- -- 3 ) rha ( alpha 1 -- -- 4 ) galnaca ( alpha 1 -- -- 4 galnfoa ( alpha 1 -- -- 3 ) quinac ( alpha 1 -- -- .
C0028959
oligosaccharide
C0032594
polysaccharide