High-efficiency synthesis and high-purity hyaluronic acid, and recombinant Corynebacterium glutamicum for oligosaccharide thereof
US12054760B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Dec 23, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12R2001/15
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention discloses a recombinant Corynebacterium glutamicum for efficient synthesis of highly pure hyaluronic acid and oligosaccharides thereof, belonging to the technical field of bioengineering. The recombinant Corynebacterium glutamicum constructed in the present invention can produce hyaluronic acid with a yield up to 40 g/L, and a crude product purity of 95%. Addition of exogenous hyaluronic acid hydrolase and optimization of the fermentation conditions results in hyaluronic acid oligosaccharides with specific molecular weight, and can further improve the yield of hyaluronic acid to 72 g/L. The invention lays a solid foundation for the efficient synthesis of highly pure hyaluronic acid by microorganisms, and the constructed recombinant Corynebacterium glutamicum is suitable for industrial production and application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.