Bear bile macromolecular extract and preparation method and use thereof
US8753688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2009 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Dec 10, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A bear bile macromolecular extract with anti-HCV virus function is disclosed. A preparation method comprises the following steps of: taking fresh bear bile or dissolving bear bile powder with water, centrifuging it by a molecular sieve filter membrane with molecular weight cut-off of 100,000 or an ultrafiltration membrane, filtering to obtain sediment, dissolving the sediment with water, adding the solution to sephadex column, separating the solution by using water or buffer as elution solvent, and freeze-drying the eluent to obtain the bear bile macromolecular extract. Experiments show that the bear bile macromolecular extract has anti-HCV virus function and can be used for treating hepatitis C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.