Microbial exopolysaccharide and uses thereof
AssigneeBoard of Regents, The University of Texas System
InventorsLee A. Bulla JR., John P. Turner
Life of this patent
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Abstract
A novel microorganism producing a nontoxic, non-antigenic exopolysaccharide is taught. The exopolysaccharide has neutral sugars migrating at the same rate as mannose, fucose, fructose and galactose, acidic sugars migrating at the same rate as fucose and amine sugars migrating at the same rate as glucose and fucose, and wherein the ratio of galactose:fucose:glucose:mannose is about 1:2:3:6. The microbe and the exopolysaccharide have uses as a biofilm in geologic applications and have several consumer uses as food and drug polymers and use as a plasma extender.
Claims16
An exopolysaccharide produced by a bacterium comprising the following characteristics:
- Gram negative, bacilliary, about 0.2×0.8 μm, facultative anaerobe, grows between 15° and 45° C. with a temperature optimum of 37° C., grows between pH 4-11 but not at pH 2, grows in AB13 medium or minimal medium, is motile, lacks a capsule, lacks spores, and produces an elastic, exopolysaccharide with a sugar content of galactose, fucose, glucose, mannose in a ratio of about 1:2:3:6.
An exopolysaccharide produced by a bacterium comprising the 16S rRNA gene of SEQ ID NO:
- 1.
An exopolysaccharide, wherein said exopolysaccharide consists essentially of neutral sugars migrating at the same rate as mannose, fucose, fructose and galactose, acidic sugars migrating at the same rate as fucose and amine sugars migrating at the same rate as glucose and fucose, wherein the sugar ratio of galactose:fucose:glucose:mannose is about 1:2:3:6.
An exopolysaccharide produced by the LAB-1 strain at ATCC No. PTA-2500.
Dependencies are inferred from the claim text.