LV10656A - Saturation for the acquisition of colorless polyalkanoates - Google Patents
Saturation for the acquisition of colorless polyalkanoatesInfo
- Publication number
- LV10656A LV10656A LV930334A LV930334A LV10656A LV 10656 A LV10656 A LV 10656A LV 930334 A LV930334 A LV 930334A LV 930334 A LV930334 A LV 930334A LV 10656 A LV10656 A LV 10656A
- Authority
- LV
- Latvia
- Prior art keywords
- polyalkanoates
- colorless
- saturation
- acquisition
- bacterial
- Prior art date
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.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924215861 DE4215861C2 (en) | 1992-05-14 | 1992-05-14 | Process for the production of dye-free polyhydroxyalkanoates |
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
LV10656A true LV10656A (en) | 1995-04-20 |
LV10656B LV10656B (en) | 1996-02-20 |
Family
ID=27203739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LVP-93-334A LV10656B (en) | 1992-05-14 | 1993-05-13 | A method for preparation of colouringless polyhydroxyalkanoate |
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)
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 |
DE69837914T2 (en) | 1997-04-15 | 2008-02-21 | Metabolix, Inc., Cambridge | High temperature PHA extraction with poor solvent for PHA |
AU6971598A (en) * | 1997-04-15 | 1998-11-11 | 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) |
AU2001285122A1 (en) | 2000-08-23 | 2002-03-04 | Metabolix, Inc. | Low molecular weight polyhydroxyalkanoate molding compositions |
EP1785444B1 (en) | 2004-08-31 | 2015-02-25 | Riken | Method for producing a biopolyester with thermal stability |
Family Cites Families (5)
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 |
-
1993
- 1993-04-28 WO PCT/DE1993/000372 patent/WO1993023554A1/en active IP Right Grant
- 1993-04-28 EP EP93911727A patent/EP0641387B1/en not_active Expired - Lifetime
- 1993-04-28 RU RU94046071A patent/RU2123048C1/en active
- 1993-04-28 ES ES93911727T patent/ES2118957T3/en not_active Expired - Lifetime
- 1993-04-28 DK DK93911727T patent/DK0641387T3/en active
- 1993-04-28 SK SK1313-94A patent/SK279080B6/en unknown
- 1993-04-28 AT AT93911727T patent/ATE167702T1/en not_active IP Right Cessation
- 1993-04-28 CZ CZ942664A patent/CZ282634B6/en not_active IP Right Cessation
- 1993-05-12 LT LTIP543A patent/LT3050B/en not_active IP Right Cessation
- 1993-05-13 LV LVP-93-334A patent/LV10656B/en unknown
-
1994
- 1994-09-29 EE EE9400076A patent/EE03060B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CZ266494A3 (en) | 1995-03-15 |
RU94046071A (en) | 1997-03-10 |
CZ282634B6 (en) | 1997-08-13 |
SK279080B6 (en) | 1998-06-03 |
WO1993023554A1 (en) | 1993-11-25 |
EP0641387B1 (en) | 1998-06-24 |
LTIP543A (en) | 1994-04-25 |
EE03060B1 (en) | 1997-12-15 |
DK0641387T3 (en) | 1999-04-06 |
LT3050B (en) | 1994-10-25 |
LV10656B (en) | 1996-02-20 |
ATE167702T1 (en) | 1998-07-15 |
SK131394A3 (en) | 1995-11-08 |
ES2118957T3 (en) | 1998-10-01 |
EP0641387A1 (en) | 1995-03-08 |
RU2123048C1 (en) | 1998-12-10 |
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