| Autor: |
Likhosherstov, Leonid M., Senchenkova, Sofia N., Shashkov, Alexander S., Derevitskaya, Varvara A., Danilova, Irina V., Botvinko, Irina V. |
| Zdroj: |
Carbohydrate Research; December 1991, Vol. 222 Issue: 1 p233-238, 6p |
| Abstrakt: |
A. beijerinckiistrain B-1615 produced two acidic exopolysaccharides in the ratio ∼9:1. The minor polysaccharide contained mannuronic and guluronic acids in the ratio 2.3:1 and is a bacterial alginate. The major polysaccharide consisted of d-galactose, l-rhamnose, and pyruvic acid in the ratios 2:1:1 and was acetylated. On the basis of methylation analysis, and 1H- and 13C-n.m.r. spectroscopy of the polysaccharide before and after removal of the pyruvic acid residues and O-deacetylation, it was concluded that the major polysaccharide had the structure with up to 1.5 OAc groups per repeating unit. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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