Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Patent
1998-04-14
2000-03-28
Lilling, Herbert J.
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
203 14, 203 67, 210767, 210768, 210787, 435134, 435146, 528354, 528361, 528491, 528492, 528501, C12P 742, C12P 762, C12N 120, C08G 6306
Patent
active
06043063&
ABSTRACT:
Polyhydroxyalkanoate (PHA) polyester is extracted from biomass by dissolving the PHA in a non-halogenated solvent which comprises a PHA-good solvent or a mixture thereof. Suitable PHA-good solvents can be selected from the disclosed alcohols, esters, amides and ketones. The PHA can be recovered, for example, by cooling, by solvent evaporation, or by addition of a PHA-poor solvent, wherein the PHA-poor solvent preferably dissolves less than about 1% (w/v) of the PHA at a temperature below the solvent boiling point. Preferred PHA types for use in the invention are poly (hydroxybutyrate-co-hydroxyvalerate), poly(3-hydroxybutyrate-co-4-hydroxybutyrate), and polymers/copolymers of hydroxyterminated polyhydroxybutyrate.
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Asrar Jawed
Kurdikar Devdatt L.
Paster Mark D.
Solodar A. John
Strauser Fred E.
Beusen Jon H.
Lilling Herbert J.
Monsanto Company
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