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Levan polysaccharide
Levan is a naturally occurring fructan present in many plants and microorganisms. This polymer is made up of fructose, a monosaccharide sugar, connected by β(2→6) glycosidic linkages. Levan can have both branched and linear structures of relatively low molecular weight. Branched levan forms a very small, sphere-like structure with basal chains 9 units long. The β(2→1) branching allows methyl ethers to form and create a spherical shape. The ends of levan also tend to contain a glucosyl residue.
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