2013 Fiscal Year Final Research Report
Microbial synthesis of polyhydroxyalkanoate bearing phenyl and phenylalkyl side groups
| Project/Area Number |
23658271
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Boundary agriculture
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
TSUGE Takeharu 東京工業大学, 総合理工学研究科(研究院), 准教授 (70332260)
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| Project Period (FY) |
2011 – 2013
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| Keywords | バイオマス / バイオプラスチック |
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| Research Abstract |
A novel type of 3-hydroxybutyrate (3HB)-based polyhydroxyalkanoate (PHA) copolymer, poly(3HB-co-3-hydroxy-3-phenylpropioate) [P(3HB-co-3H3PhP)], which bears phenyl side group, was synthesized by employing Ralstonia eutropha PHB-4 recombinant expressing Pseudomonas sp. 61-3 PHA synthase 1. The 3H3PhP fraction was increased up to 8.9 mol% by feeding 3H3PhP precursors. As phenyl side group was introduced into P(3HB), the melting temperature and the enthalpy of fusion were decreased while the glass transition temperature was increased, demonstrating a distinct thermal behavior by the effect of phenyl side group.
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