| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Subcritical water is a highly reactive yet harmless solvent. When an attempt was made to synthesize rare sugars from common sugars by subcritical water treatment, almost no rare sugars were produced. However, the addition of ethanol to water improved the yield of rare sugars, although the addition of ethanol decreases the solubility of sugars in a medium. Therefore, aqueous polyols were adopted for the production. However, since no significant improvement in the rare sugar yield was observed, we attempted to synthesize rare sugars in a subcritical water containing phosphate buffer. As a result, significant improvement in the yield of rare sugars of 10 times or more was observed as compared with the conventional methods.
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