Preparation of water-soluble non-acetylated polysaccharide polymer having repeating pentamer units with xanthomonas
US5948651A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1995 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Mar 20, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/822
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Water-soluble polysaccharide polymers are provided including a polymer composed of repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a polymer composed of repeating tetramer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:1:1. The D-glucose moieties are linked in a beta-1,4! configuration. The inner D-mannose moieties are linked in an alpha-1,3! configuration, generally to alternate glucose moieties. The D-glucuronic acid moieties are linked in a beta-1,2! configuration to the inner mannose moieties. The outer mannose moieties are linked to the glucuronic acid moieties in a beta-1,4! configuration. Also an isolated acetylase deficient mutant of Xanthomonas is used in a process to produce the polysaccharide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.