Methods of PHA extraction and recovery using non-halogenated solvents
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C12P-007/42
C12P-007/62
C12N-001/20
C08G-063/06
출원번호
US-0060121
(1998-04-14)
발명자
/ 주소
Kurdikar Devdatt L.
Strauser Fred E.
Solodar A. John
Paster Mark D.
Asrar Jawed
출원인 / 주소
Monsanto Company
대리인 / 주소
Beusen
인용정보
피인용 횟수 :
46인용 특허 :
9
초록▼
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
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.
대표청구항▼
[ What is claimed is:] [1.] A method of recovering polyhydroxyalkanoate (PHA) from biomass comprising:providing biomass containing PHA;dissolving PHA with a solvent to produce PHA-enriched solvent and residual biomass materials;separating the residual biomass materials from the PHA-enriched solvent;
[ What is claimed is:] [1.] A method of recovering polyhydroxyalkanoate (PHA) from biomass comprising:providing biomass containing PHA;dissolving PHA with a solvent to produce PHA-enriched solvent and residual biomass materials;separating the residual biomass materials from the PHA-enriched solvent; andrecovering PHA polymer from the PHA-enriched solvent, wherein:the PHA is selected from the group consisting of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV), poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (3HB4HB), and polymers and copolymers of hydroxyterminated polyhydroxybutyrate (PHB-OH); and n the PHA is 3HB4HB or PHB-OH, the solvent is selected from the group consisting of: cyclic and acyclic R'--OH alcohols where R'=C.sub.4 -C.sub.10, dimethyl glutarate, dimethyl adipate, isobutyl acetate, ethyl lactate, isoamyl acetate, benzyl acetate, 2-methoxy ethyl acetate, tetrahydrofurfuryl acetate, propyl propionate, pentyl propionate, butyl butyrate, isobutyl isobutyrate, ethyl butyrate, ethyl valerate, methyl valerate, benzyl benzoate, methyl benzoate, methyl propionate, allyl alcohol, tetrahydrofurfuryl alcohol, furfuryl alcohol, ethyl benzene, 1,3-dimethoxybenzene, cumene, benzaldehyde, 2-furaldehyde, 1,2-propanediol, 1,2-diaminopropane, ethylene glycol diethyl ether, 1,2,3-trimethylbenzene, 1,2,4-trimethylbenzene, 1,3-dioxane, 1-nitropropane, toluene-2,4-diisocyanate, acetic acid, acrylic acid, acetic anhydride, methyl isobutyl ketone, methyl n-amyl ketone, 5-methyl-2-hexanone, acetophenone, dimethyl acetamide, alpha-methyl styrene, and propylene carbonateand when the PHA is PHBV, the solvent is selected from the group consisting of cumene, benzaldehyde, 2-furaldehyde, toluene-2,4-diisocyanate, alpha-methylstyrene, acetic acid, acrylic acid, acetic anhydride, 1,2-diaminopropane, 1-nitropropane, and an amyl alcohol mixed isomeric solution comprising 1-pentanol, 2-methyl-1-butanol, and 3-methyl-1-butanol.
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이 특허에 인용된 특허 (9)
Traussnig Heinz (Frohnleiten AIX) Kloimstein Engelbert (Eferding AIX) Kroath Hans (Linz AIX) Estermann Robert (Linz AIX), Extracting agents for poly-D(-)-3-hydroxybutyric acid.
Escalona Antonio M. (Madrid ESX) Varela Francisco R. (Alicante ESX) Gomis Antonio M. (Alicante ESX), Procedure for extraction of polyhydroxyalkanoates from halophilic bacteria which contain them.
Vanlautem Nol (Wavre BEX) Gilain Jacques (Brussels BEX), Process for extracting poly-beta-hydroxybutyrates by means of a solvent from an aqueous suspension of microorganisms.
Blauhut Wilfried (Linz ATX) Gierlinger Wolfgang (Linz ATX) Strempfl Friedrich (Linz ATX), Process for obtaining a polyhydroxyalkanoate from the cell material of a microogranism.
Zhong, Luhua; Muller, Edward M.; Barber, James J.; Pugach, Joseph; Whitehouse, Robert S.; Daughtry, Sean K., Methods of making intermediates from polyhydroxyalkanoates.
Zhong,Luhua; Muller,Edward M.; Barber,James J.; Pugach,Joseph; Whitehouse,Robert S.; Daughtry,Sean K., Methods of making intermediates from polyhydroxyalkanoates.
Narasimhan,Karunakaran; Cearley,Angella Christine; Gibson,Michael Steven; Welling,Stanley James, Process for the solvent-based extraction of polyhydroxyalkanoates from biomass.
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