Dextran structure
Dextran is an α-1,6-glycosidic linked D-glucan with side-chains α-1,3 linked to the backbone units of the Dextran biopolymer. The degree of branching is approximately 5% in native (unfractionated) dextran and decreases with decreasing molecular weight. The branches are mostly 1-2 glucose units long.
Dextran can be obtained from fermentation of sucrose-containing media by Leuconostoc mesenteroides B512F.
Fragment of the dextran structure
Dextran is a glucose polymer in which the glycosidic linkages are predominantly of the α-1,6 type. The degree of α-1,3 branching is generally less than 5% and decreases with decreasing molecular weight.
Here is an illustration of a fragment of the dextran structure.
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