on the basis of 1h and 13c nuclear magnetic resonance spectroscopy , methylation analysis , partial acid hydrolysis , smith degradation , and chromium trioxide oxidation , the following structure can be assigned to the repeating oligosaccharide unit of the polysaccharide : -4 ) dgala ( beta 1-3 ) dgalnac- ( beta 1-2 ) lac3rha ( alpha 1-2 ) lrha ( alpha 1- , where gala = galacturonic acid .
C0028959
oligosaccharide
C0032594
polysaccharide