Chitosan and method of preparing chitosan
US7413881B2 · kind B2 · utility
3Cited by
21References
16Claims
0Family size
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Key dates
| Filing date | Jun 15, 2005 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Aug 31, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2525
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A highly deacetylated chitosan obtained from microbial biomass, a method of obtaining chitosan from microbial biomass, and biomass for making chitosan are disclosed. The method includes providing chitin-containing biomass; reacting the chitin-containing biomass in a caustic solution of greater than 25 percent alkali at a reaction temperature greater than 95° C. for a reaction period of at least 10 hours to convert the chitin in the biomass to chitosan; and separating the chitosan from the caustic solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.