IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0992133
(2004-11-19)
|
우선권정보 |
JP-2003-392467(2003-11-21) |
발명자
/ 주소 |
- Kinoshita,Koichi
- Osakada,Fumio
- Ueda,Yasuyoshi
- Narasimhan,Karunakaran
- Cearley,Angella Christine
- Yee,Kenneth
- Noda,Isao
|
출원인 / 주소 |
- Kaneka Corporation
- Procter &
- Gamble Company
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
18 인용 특허 :
6 |
초록
▼
The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms
The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms as a extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70째 C. or higher, and cooling the solution to below 70째 C.
대표청구항
▼
The invention claimed is: 1. A method for producing a polyhydroxyalkanoate crystal which comprises extracting a polyhydroxyalkanoate using a monohydric alcohol having 4 to 10 carbon atoms as an extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water rela
The invention claimed is: 1. A method for producing a polyhydroxyalkanoate crystal which comprises extracting a polyhydroxyalkanoate using a monohydric alcohol having 4 to 10 carbon atoms as an extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70째 C. or higher, and cooling the solution to below 70째 C. to precipitate a polyhydroxyalkanoate crystal. 2. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the monohydric alcohol is selected from among butanol, pentanol, hexanol, heptanol, octanol, nonanol, decanol, and isomers thereof. 3. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate concentration in the polyhydroxyalkanoate solution is 1 to 20% by weight. 4. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate is a copolymer obtained by copolymerizing at least two species of monomers selected from the group consisting of 3-hydroxybutyrate, 3-hydroxyvalerate, 3-hydroxypropionate, 4-hydroxybutyrate, 4-hydroxyvalerate, 5-hydroxyvalerate, 3-hydroxyhexanoate, 3-hydroxyheptanoate, 3-hydroxyoctanoate, 3-hydroxynonanoate and 3-hydroxydecanoate. 5. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate is a copolymer composed of 3-hydroxyhexanoate and at least one species of hydroxyalkanoates other than 3-hydroxyhexanoate. 6. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate is a copolymer composed of 3-hydroxyhexanoate and 3-hydroxybutyrate. 7. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate is produced by at least one microorganism selected from the group consisting of species belonging to the genus Aeromonas, Alcaligenes, Azotobacter, Bacillus, Clostridium, Halobacterium, Nocardia, Rhodospirillum, Pseudomonas, Ralstonia, Zoogloea, Candida, Yarrowia, and Saccharomyces. 8. The method for producing a polyhydroxyalkanoate crystal according to claim 1, wherein the polyhydroxyalkanoate is produced by a transformant obtained by introducing a polyhydroxyalkanoate synthetic gene group derived from Aeromonas caviae. 9. The method for producing a polyhydroxyalkanoate crystal according to claim 8, wherein the transformant obtained by introducing a polyhydroxyalkanoate synthetic gene group derived from Aeromonas caviae is Ralstonia eutropha obtained by introducing a polyhydroxyalkanoate synthetic gene group derived from Aeromonas caviae. 10. The method for producing a polyhydroxyalkanoate crystal according to claim 1, which comprises extracting a polyhydroxyalkanoate, and using the remaining biomass substance after decreasing its solvent content as animal feed.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.