| Project/Area Number |
15K07464
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Food science
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| Research Institution | Aomori Prefectural Industrial Technology Research Center |
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Principal Investigator |
UCHISAWA Hidemitsu 地方独立行政法人青森県産業技術センター, 工業部門, 室長 (10505572)
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| Co-Investigator(Kenkyū-buntansha) |
工藤 謙一 地方独立行政法人青森県産業技術センター, 工業部門, 所長 (90250232)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | シジミ / 冷凍 / アコルビン / オルニチン |
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| Outline of Final Research Achievements |
The ornithine content of an extract of the brackish-water bivalve, Corbicula japonica, increased when the bivalve was frozen. But that mechanism was completely unknown. A novel ornithine-containing tripeptide, named acorbine(beta-Ala-Orn-Orn), commonly found in C. japonica, which is believed to be the source of increased free ornithine. The total amount of beta-alanine and ornithine in the extract remained constant regardless of the temperature at which the bivalve was processed. The amount of free beta-alanine and ornithine increased significantly when the bivalve was frozen, with a corresponding decrease in peptidic beta-alanine and ornithine. The results suggest that changing the growth conditions triggers tripeptide proteolysis within the bivalve, which ultimately manifests in increased free beta-alanine and ornithine. Now, we are studying the low-temperature response mechanism of the bivalve in order to develop a new freezing technology.
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