Extraction of poly(.beta.-hydroxy butyric acid)

Details Extraction of poly(.beta.-hydroxy butyric acid) Extraction of poly(.beta.-hydroxy butyric acid)

1981-07-28

1982-11-09

Nielsen, Earl A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

528361, 528493, 528496, 435135, C08G 6372

Patent

active

043585833

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.

REFERENCES:
patent: 3107172 (1963-10-01), Baptist
patent: 4101533 (1978-07-01), Lafferty et al.
patent: 4138291 (1979-02-01), Lafferty
patent: 4140741 (1979-02-01), Lafferty et al.
patent: 4324880 (1982-04-01), Dhein et al.

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