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The chemical structure of an exopolysaccharide (EPS) produced by Sorangium cellulosum NUST06 was investigated. The EPS was found to have molecular masses greater than 2?106 Da, and consisted of D-glucose, D-mannose and D-glucuronic acid in a ratio of 5:4:1. The analytical results of methylation and nuclear magnetic resonance spectra suggested the EPS consist of following tetrasaccharide repeating units: 4) -b-D-Glup (1 4)- b-D-Glup (1 4) -b-D-Glup (1 a-D-GluAp (1 6) a-D-manp (1 6)-a-D-manp (1 6) (6) (4) (4) ↑ ↑ ↑ Me Ac Ac
The chemical structure of an exopolysaccharide (EPS) produced by Sorangium cellulosum NUST06 was investigated. The EPS was found to have molecular masses greater than 2? 106 Da, and consisted of D-glucose, D-mannose and D-glucuronic acid in a ratio of 5: 4: 1 The analytical results of methylation and nuclear magnetic resonance spectra suggested the EPS consist of following tetrasaccharide repeating units: 4) -bD-Glup (14) -bD-Glup (14) -bD-Glup 1 aD-GluAp (1 6) aD-manp (1 6) -aD-manp (1 6) (6) (4) (4) ↑ ↑ ↑ Me Ac Ac