levan

levan
SYN: fructosan (1).

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lev·an 'lev-.an n any of a group of levorotatory polysaccharides (C6H10O5)n composed of levulose units of the furanose type and formed esp. from sucrose solutions by the action of various bacteria (as Bacillus subtilis or B. mesentericus) compare DEXTRAN

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lev·an (levґan) a homopolysaccharide containing fructose residues in 2,6-glycosidic linkage. Formed from sucrose by the enzyme levansucrase, levan, which is produced by certain species of Bacillus and Leuconostoc, increases the adhesion of bacteria to surfaces of the teeth and promotes the formation of dental plaque.

Medical dictionary. 2011.

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