发明名称 |
PROCESS FOR PRODUCING MICROBIAL COPOLYESTERS FROM SUCROSE-CONTAINING FEEDSTOCKS |
摘要 |
A process for producing hydroxyalkanoate copolymers, which comprises: (i) pre-treating a sucrose-containing feedstock in an acidic solution; (ii) feeding the pre-treated feedstock into a bioreactor containing polyhydroxyalkanoate producing microbial cells; (iii) cultivating the polyhydroxyalkanoate producing microbial cells to form a cell mass containing the hydroxyalkanoate copolymers; (iv) recoverying the hydroxyalkanoate copolymers from the cell mass. The pre-treating step has the main function of hydrolyzing sucrose into glucose and fructose, which in turn are converted into 4-ketovaleric acid to give a mixture of mono-saccharides and organic precursors for microbial synthesis of hydroxyalkanoate copolymers, and particularly of PHBVV ter-polymers. Complex and expensive purification processes of the substrates obtained from the pre-treating step are not needed. The solutions can be directly used as the feeding solutions for microbial PHA biosynthesis. |
申请公布号 |
US2014377819(A1) |
申请公布日期 |
2014.12.25 |
申请号 |
US201114358911 |
申请日期 |
2011.11.17 |
申请人 |
Yu Jian |
发明人 |
Yu Jian |
分类号 |
C12P7/62 |
主分类号 |
C12P7/62 |
代理机构 |
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代理人 |
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主权项 |
1. A process for producing hydroxyalkanoate copolymers, which comprises:
(i) pre-treating a sucrose-containing feedstock in an acidic solution; (ii) feeding the pre-treated feedstock into a bioreactor containing polyhydroxyalkanoate producing microbial cells; (iii) cultivating the polyhydroxyalkanoate producing microbial cells to form a cell mass containing the hydroxyalkanoate copolymers; (iv) recoverying the hydroxyalkanoate copolymers from the cell mass. |
地址 |
Honolulu HI US |