Chitosan-xanthan based polyionic hydrogels for stabilization and controlled release of vitamins
US6964772B1 · kind B1 · utility
8Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA23V2002/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A thermo- and photo stable composition comprising a chitosan/xanthan hydrogel including at least one thermo- or photo-sensitive substance chosen among the following: vitamins, amino-acids, nucleic acids, and polypeptides. The hydrogel can be adapted to release the thermo- or photo-sensible substances in either a human or an animal. The present invention also discloses a method of making these hydrogel composition. Additionally, the present invention presents a method of using these hydrogel composition in dermatology or as a food supplement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.