EE03060B1 - Method for obtaining colorless polyhydroxyalkanoates - Google Patents

Method for obtaining colorless polyhydroxyalkanoates

Info

Publication number
EE03060B1
EE03060B1 EE9400076A EE9400076A EE03060B1 EE 03060 B1 EE03060 B1 EE 03060B1 EE 9400076 A EE9400076 A EE 9400076A EE 9400076 A EE9400076 A EE 9400076A EE 03060 B1 EE03060 B1 EE 03060B1
Authority
EE
Estonia
Prior art keywords
polyhydroxyalkanoates
obtaining colorless
bacterial
polyhydroxyalkanoate
culture
Prior art date
Application number
EE9400076A
Other languages
Estonian (et)
Inventor
Lehmann Olaf
Mayer Torsten
Rapthel Inno
Rauchstein Klaus-Dieter
Runkel Dietmar
Schaffer J�rgen
Original Assignee
Buna Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19924215862 external-priority patent/DE4215862A1/en
Priority claimed from DE4215860A external-priority patent/DE4215860A1/en
Priority claimed from DE19924215861 external-priority patent/DE4215861C2/en
Application filed by Buna Gmbh filed Critical Buna Gmbh
Publication of EE03060B1 publication Critical patent/EE03060B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P7/00—Preparation of oxygen-containing organic compounds
    • C12P7/62—Carboxylic acid esters
    • C12P7/625—Polyesters of hydroxy carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/88—Post-polymerisation treatment
    • C08G63/90—Purification; Drying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Medicinal Chemistry (AREA)
  • Microbiology (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)

Abstract

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.
EE9400076A 1992-05-14 1994-09-29 Method for obtaining colorless polyhydroxyalkanoates EE03060B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19924215862 DE4215862A1 (en) 1992-05-14 1992-05-14 Dye-free poly-hydroxy-alkanoate prodn. - comprises drying moist bacterial biomass and heating followed by extn. with acetic acid
DE4215860A DE4215860A1 (en) 1992-05-14 1992-05-14 Dye-free poly:hydroxy:alkanoate prodn. - comprises drying moist bacterial biomass and extracting using acetic acid contg. beta-butyrolactone
DE19924215861 DE4215861C2 (en) 1992-05-14 1992-05-14 Process for the production of dye-free polyhydroxyalkanoates

Publications (1)

Publication Number Publication Date
EE03060B1 true EE03060B1 (en) 1997-12-15

Family

ID=27203739

Family Applications (1)

Application Number Title Priority Date Filing Date
EE9400076A EE03060B1 (en) 1992-05-14 1994-09-29 Method for obtaining colorless polyhydroxyalkanoates

Country Status (11)

Country Link
EP (1) EP0641387B1 (en)
AT (1) ATE167702T1 (en)
CZ (1) CZ282634B6 (en)
DK (1) DK0641387T3 (en)
EE (1) EE03060B1 (en)
ES (1) ES2118957T3 (en)
LT (1) LT3050B (en)
LV (1) LV10656B (en)
RU (1) RU2123048C1 (en)
SK (1) SK279080B6 (en)
WO (1) WO1993023554A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5942597A (en) * 1995-08-21 1999-08-24 The Procter & Gamble Company Solvent extraction of polyhydroxyalkanoates from biomass
DE19623778A1 (en) * 1995-09-09 1997-12-18 Buna Sow Leuna Olefinverb Gmbh Extractant for polyhydroxyalkanoic acids
ATE364708T1 (en) 1997-04-15 2007-07-15 Metabolix Inc HIGH TEMPERATURE PHA EXTRACTION WITH POOR-SOLVING SOLVENTS FOR PHA
US6043063A (en) * 1997-04-15 2000-03-28 Monsanto Company Methods of PHA extraction and recovery using non-halogenated solvents
DE69840594D1 (en) 1997-07-22 2009-04-09 Metabolix Inc POLYHYDROXYALKANOATE MOLDING
US7455999B2 (en) 1998-01-22 2008-11-25 Metabolix, Inc. Transgenic systems for the manufacture of poly (3-hydroxy-butyrate-co-3-hydroxyhexanoate)
WO2002016284A2 (en) 2000-08-23 2002-02-28 Metabolix, Inc. Low molecular weight polyhydroxyalkanoate molding compositions
WO2006025375A1 (en) 2004-08-31 2006-03-09 Riken Biopolyester with thermal stability

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1720325A1 (en) * 1967-11-28 1971-06-16 Battelle Development Corp Process for stabilizing polytetramethylglycolide against thermal depolymerization
EP0015123B1 (en) 1979-02-21 1982-12-22 Imperial Chemical Industries Plc A process for the extraction of poly-3-hydroxy-butyric acid from microbial cells
EP0058480B1 (en) 1981-02-12 1985-06-26 Imperial Chemical Industries Plc Extraction of poly(beta-hydroxybutyric acid)
DD229428A1 (en) * 1984-11-28 1985-11-06 Akad Wissenschaften Ddr PROCESS FOR EXTRACTION OF POLY-SS HYDROXYBUTTERIC ACID FROM BACTERIA BIOMASS
AT390068B (en) * 1988-07-07 1990-03-12 Danubia Petrochemie EXTRACTION AGENT FOR POLY-D (-) - 3-HYDROXYBUTTERIC ACID

Also Published As

Publication number Publication date
LV10656A (en) 1995-04-20
ATE167702T1 (en) 1998-07-15
RU2123048C1 (en) 1998-12-10
LT3050B (en) 1994-10-25
SK131394A3 (en) 1995-11-08
SK279080B6 (en) 1998-06-03
DK0641387T3 (en) 1999-04-06
CZ266494A3 (en) 1995-03-15
WO1993023554A1 (en) 1993-11-25
EP0641387A1 (en) 1995-03-08
LV10656B (en) 1996-02-20
CZ282634B6 (en) 1997-08-13
ES2118957T3 (en) 1998-10-01
EP0641387B1 (en) 1998-06-24
LTIP543A (en) 1994-04-25
RU94046071A (en) 1997-03-10

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