Extraction of poly(.beta.-hydroxy butyric acid)
US4358583A · kind A · utility
18Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1981 |
| Grant date | Nov 9, 1982 |
| Priority date | — |
| Expiry date | Jul 28, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P7/625
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Poly (.beta.-hydroxy butyric acid), PHB, is extracted from a suspension of bacterial cells by causing the cells to flocculate, by pH modification, optionally with heating, and then extracting the PHB from the flocculated cells with a suitable extraction solvent. Flocculation of the cells renders subsequent separation of the PHB solution from the cell debris more facile. Preferably lipids are extracted from the flocculated cells before contact with the PHB extraction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.