Purification method for embryo—derived infectious bronchitis virus (IBV)
US9701946B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 18, 2015 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Nov 18, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2770/20051
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention discloses an avian infectious bronchitis virus purification method. The method uses ordinary avian embryo which was affected by avian bronchitis virus. Using the combination of centrifugation, ultrafiltration, concentration, molecular sieve chromatography and ultrafiltration method can effectively remove miscellaneous protein in embryo-derived infectious bronchitis virus antigen, high virus recovery, and have no effect on the activity of avian infectious bronchitis virus. The avian infectious bronchitis virus purified by this method can be directly used in the preparation of avian infectious bronchitis virus vaccine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.