发明名称 |
METHOD OF COLLECTING HIGHLY PURE POLYHYDROXYALKANOATE FROM MICROBIAL CELLS |
摘要 |
<p>The present invention has an object to provide a method for separating and purifying a PHA without causing a serious decrease of the molecular weight to obtain a highly pure PHA in a high yield, which comprises efficiently removing cell components other than PHA particles from a cultured PHA-containing microbial cell. Another object of the present invention is to provide a method for obtaining an agglomerate of PHA particles. <??>The method for recovering a PHA according to the present invention is a method which comprises efficiently disrupting a cell to recover the PHA by carrying out a physical disruption treatment and an alkali addition at low temperature for an aqueous suspension of the PHA-containing microbial cell, and then treating the PHA with an enzyme and/or a surfactant. Moreover, the particle diameter of the PHA may be enlarged by suspending the PHA in a hydrophilic solvent and/or water, and stirring at a temperature equal to or below the boiling point of said suspension, to agglomerate said PHA.</p> |
申请公布号 |
EP1609868(B1) |
申请公布日期 |
2015.11.11 |
申请号 |
EP20040703505 |
申请日期 |
2004.01.20 |
申请人 |
KANEKA CORPORATION |
发明人 |
YANAGITA, YOSHIFUMI;OGAWA, NORIKO;UEDA, YASUYOSHI;OSAKADA, FUMIO;MATSUMOTO, KEIJI |
分类号 |
C12P7/62;C08G63/89 |
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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