Constitution of sargassan,a sulphated heteropolysaccharide from sargassum linifolium |
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Authors: | A.Fouad Abdel-Fattah M.Magdel-din Hussein H.Mohamed Salem |
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Affiliation: | Laboratory of Microbiological Chemistry, National Research Centre, Dokki, Cairo, and Department of Biochemistry, Faculty of Agriculture, Cairo University, Giza Egypt |
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Abstract: | The behaviour towards periodate of the brown-algal polysaccharide sargassan before and after partial hydrolysis, alkali treatment, and methanolysis has been studied. Evidence is thereby provided that the sargassan backbone is composed of (1→4)-linked β-D-glucuronic acid and β-D-mannose residues. Heteropolymeric, partially sulphated branches are attached to the backbone, and these branches comprise various proportions of(l→4)-linked, β-D-galactose, β-D-galactose 6-sulphate, and β-D-galactose 3,6-disulphate residues, (1→2)-linked α-L-fucose 4-sulphate residues, and (1→3)-linked β-D-xylose residues. |
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