发明名称 |
PROCESS FOR RECOVERING POLYHYDROXIALKANOATES (PHAS) FROM CELLULAR BIOMASS |
摘要 |
<p>A process for recovering polyhydroxyalkanoates (PHAs) from cellular biomass of bacteria, said biomass being obtained by fermentation and in the form of a cellular biomass slurry in aqueous suspension, comprising the steps of: submitting the slurry to operations of injection of PHA solvent, agitation a nd heating, in order to form a suspension comprising PHA solvent with the dissolved PHA, water and insoluble residues; recuperating the solvent enrich ed with PHA; rapidly cooling the solution of PHA solvent to precipitate the dissolved PHA; micro-filtrating the suspension of PHA precipitated in the solvent, in order to separate a paste concentrated with precipitated PHA; washing with water, heating and agitating the concentrated PHA paste, to promote evaporation of the solvent and to obtain a suspension containing PHA granules; agitating and shearing the PHA granules and depleting the residual solvent; and separating the purified PHA particles from the suspension.</SDO AB></p> |
申请公布号 |
CA2547689(A1) |
申请公布日期 |
2005.06.09 |
申请号 |
CA20042547689 |
申请日期 |
2004.11.25 |
申请人 |
PHB INDUSTRIAL S.A. |
发明人 |
MANTELATTO, PAULO EDUARDO;NONATO, ROBERTO VIANNA;SATO, TETUHIKO;DUZZI, ALVARO MINTO;ROCCHICCIOLI, CARLO;DURAO, NAZARENO ANTONIO SERTORI;KESSERLINGH, SONIA MARIA |
分类号 |
C12P7/62;C08G63/06;C08G63/89;C08G63/90 |
主分类号 |
C12P7/62 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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