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- Material Type
- 文書・図像類
- Author/Editor
- 河野, 元治
- Author Heading
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- Alternative Title
- Evaluation of effect of protein on dissolution rates of amorphos silica
- Text Language Code
- jpn
- Target Audience
- 一般
- Note (General)
- 2011-2013年度科学研究費助成事業（基盤研究（C））研究成果報告書 課題番号：23540561 研究代表者：河野元治（鹿児島大学・理工学研究科・教授）地球表層で進行している鉱物の溶解に及ぼす有機分子の影響を明らかにするため、タンパク質およびアミノ酸によるアモルファスシリカの溶解速度に及ぼす影響を検討した。実験方法として、タンパク質およびアミノ酸を含む溶液中（pH4、5、6）でのアモルファスシリカのフロースルー系溶解実験を行った。実験の結果、アモルファスシリカの溶解速度はタンパク質との反応で著しく増大することが確認され、塩基性アミノ酸によるアモルファスシリカとの静電的作用が主な溶解促進作用として寄与していることが推察された。Experiment on dissolution of amorphous silica in solutions (pH4, 5, 6) containing BSA and various amino acids including acidic, neutral, and basic amino acids were performed to evaluate the effect of organic molecules on dissolution of minerals in the earth's surface environments. Results indicated that BSA greatly enhanced the dissolution rate of amorphous silica. Basic amino acids also exhibited stronger enhancement effect relative to neutral and acidic amino acids. Therefore, the interaction of basic amino acids residues with the amorphous silica surface are likely to play an important role as rate enhancement mechanism of BSA.