[show abstract][hide abstract] ABSTRACT: THE mucilage obtained from the bark of the slippery elm tree (Ulmus fulva) was reported by Anderson1 to occur as the partially methylated derivative (OMe, 4.6 per cent of the polysaccharide). From an investigation of the hydrolysis products of the polysaccharide, he concluded that it contained D-galactose, L-rhamnose and D-galacturonic acid, and, in addition, he found indications which suggested the presence of a partially methylated aldose sugar and a pentose sugar. Later, Gill, Hirst and Jones2,3 investigated the chemical structure of the mucilage by the methylation procedure; only the methylated derivatives of D-galactose, L-rhamnose and D-galacturonic acid were detected, however.
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