期刊
POLYMER DEGRADATION AND STABILITY
卷 97, 期 3, 页码 329-336出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2011.12.007
关键词
Polyhydroxyalkanoate; 2-Alkenoic acid; Pyrolysis; Recycling; Metabolic engineering
资金
- JSPS
- [KAKENHI 19681008]
This study describes the biosynthesis and thermal degradation of medium-chain-length polyhydroxyalkanoate (PHA), focusing on 2-alkenoic acids as a recyclable carbon source. Using metabolically engineered Escherichia coli, PHA consisting of 3-hydroxydecanoate (3HD) was synthesized from 2-decenoic acid. Solvent cast film of poly(3HD) [P(3HD)] was transparent and showed thermal property similar to that of polycaprolactone. In addition, the use of various 2-alkenoic acids (C6-C12) resulted in production of PHAs with over 95 mol% of the corresponding single monomer units. The pyrolysis product of P(3HD) was dominantly 2-decenoic acid used for the P(3HD) biosynthesis. This demonstrates the feasibility of PHA recycling via 2-alkenoic acids, which act as pyrolysis products and raw materials for PHA biosynthesis. (C) 2011 Elsevier Ltd. All rights reserved.
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