| Project/Area Number |
24780172
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Wood science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
YUICHIRO Otsuka 独立行政法人森林総合研究所, バイオマス化学研究領域, 主任研究員 (80455261)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 放射性セシウム / 除染 / 代謝工学 / 2-ピロン4,6-ジカルボン酸 / リグニン / キレーター / Sphingobium / 錯体化学 / PDC / アルカリ金属 / 2-ピロン-4,6-ジカルボン酸 / Pseudomonas putida / 植物バイオマス / アルカリ金属キレーター / キレート / バイオマス / 錯体 / バクテリア / グリーンケミカルス |
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| Outline of Final Research Achievements |
We have established a production system for 2-pyrone-4,6-dicarboxylic acid (PDC) as a novel platform chemical from lignin via fermentation by genetically-modified bacterial. We have also successfully synthesized various polymers such as polyesters, polyamides and polyurethanes from PDC. Unexpectedly, we have also now discovered a unique function of PDC as an alkali metal chelator. In this research, PDC preferentially chelated 133Cs as compared to other Alkali metals. 133Cs was precipitated as a Cs-PDC complex. PDC was able to remove about 90% of Cs in a mixed Na-Cs solution, even when the concentration ratio of Na and Cs was 10 to 1. Comparing the structures of the Cs-PDC and Na-PDC complexes, the Cs-PDC complex does not contain water and it is larger than the Na-PDC complex. The size and hydrophobic nature of the Cs-PDC complex explains why it more readily precipitates in water compared to the Na-PDC complex.
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