| Project/Area Number |
23500946
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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 |
Eating habits, studies on eating habits
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| Research Institution | Nishikyushu University |
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Principal Investigator |
YASUDA Midori 西九州大学, 公私立大学の部局等, 教授 (20279368)
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| Co-Investigator(Kenkyū-buntansha) |
TABATA Masaaki 佐賀大学, 工学(系)研究科(研究院), 研究員 (40039285)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2011: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
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| Keywords | 食品 / クロロフィル / 光退色 / 活性酸素 / 凝集 / 一重項酸素 / 金属イオン |
|---|
| Research Abstract |
It is known that chlorophyll which is a green pigment in green tea and vegetables discolors by light irradiation. The purpose of this study is to prevent the discoloration of chlorophyll by light. At first, we examined the effect of antioxidants. As a result, hydrophobic antioxidants like tocopherol prevented a little discoloration of chlorophyll, but did not lead to basic solution. On the other hand, it turned out that chlorophyll formed aggregate by solvent and coexistence substance. Chlorophyll interacted with sodium copper chlorophyllin which is similar structure as chlorophyll, and the water-rich condition of the water-methanol mixture solvent produced the mixture aggregation of chlorophyll and sodium copper chlorophyllin. These were suggested to reduce the damage by light irradiation of chlorophyll.
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