| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
Wooden barrel sake (Taruzake) contains sugi heartwood constituents and constituents derived from Japanese sake. The objective of this study is the elucidation of reaction products caused by co-existence of sugi heartwood and sake constituents. Sequirin-C is a representative extractives of sugi heartwood. Aging experiment using some combination of sequirin-C and seven kinds of typical Japanese sake constituents were conducted. A solution with combination of sequirin-C and L-alanine showed remarkable influence of co-existence of both constituents. Several reaction products were separated and purified from this solution. As a result of instrumental analyses of these products, three products, which have partial structure of sequirin-C and linkage with L-alanine, were confirmed. Influence of sequirin-C on the flavor in the aging of wooden barrel sake was suggested, because amino acid is a constituent involved in the flavor of Japanese sake.
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