Genetic control of acetylation and pyruvylation of xanthan based polysaccharide polymers
US5514791A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1994 |
| Grant date | May 7, 1996 |
| Priority date | — |
| Expiry date | Apr 25, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/822
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Variant xanthan gums are provided which include a water-soluble polysaccharide polymer comprising repeating pentamer units having a D-glucose:D-mannose:D-glucuronic acid ratio of about 2:2:1, and a water-soluble polysaccharide polymer comprising 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. Processes for preparing the polysaccharide polymers are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.