PROCESS FOR OBTAINING POLYHYDROXYALKANOATES WITHOUT A DYESTUFF

A process is disclosed for preparing dye-free polyhydroxyalkanoates formed in the cells as storage substances during the culture of bacterial biomasses. The dried bacterial biomass is at first exposed for 10 to 120 minutes to a temperature between 80 DEG C and the lower limit of the polyhydroxyalkan...

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Bibliographic Details
Main Authors RAPTHEL INNO, LEHMANN OLAF, RAUCHSTEIN KLAUS-DIETER, MAYER TORSTEN, SCHAFFER JURGEN, RUNKEL DIETMAR
Format Patent
LanguageEnglish
Published 15.03.1995
Edition5
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS THEREOF
CULTURE MEDIA
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
ORGANIC MACROMOLECULAR COMPOUNDS
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
THEIR PREPARATION OR CHEMICAL WORKING-UP
VINEGAR
WINE
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Summary:A process is disclosed for preparing dye-free polyhydroxyalkanoates formed in the cells as storage substances during the culture of bacterial biomasses. The dried bacterial biomass is at first exposed for 10 to 120 minutes to a temperature between 80 DEG C and the lower limit of the polyhydroxyalkanoate melting range, and is then extracted with acetic acid; 1 to 10 parts per volume, expressed as a percentage, of an aliphatic carboxylic acid derivate, are added to the extracting agent.
Bibliography:Application Number: CZ19940002664