Analysis of fluoride adsorption on rice and technology development for reduction of fluoride intake in areas with fluoride-laden groundwaters

地下水富氟地区水稻氟吸附分析及降氟技术开发

• 批准号: 22H01621
• 负责人: 滝沢 智
• 金额: $ 11.15万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22H01621/
• 关键词: フッ素摂取; 米; デンプン; 地下水; 吸着

（１）デンプン含有食品へのフッ素吸着機構の解明デンプンとフッ素との水素結合について、①水素結合阻害剤を用いた実験と、②水素結合の機器分析、の2つの方法で解析・検証した。水素結合阻害剤には、デンプン分子内の水素結合を阻害する尿素と、デンプン分子間の水素結合を阻害する1, 1, 3,3,-テトラメチル尿素(TMU)があり、フッ素がデンプン分子に水素結合しているとすれば、このうちTMUによりフッ素の吸着量が低下し、尿素の影響はわずかであることが推定される。そこで、これらの水素結合阻害剤を異なる条件で添加して、デンプン中のamyloseとamylopectinへのフッ素吸着に及ぼす影響を検証した。機器分析による方法は、フーリエ変換赤外吸光法(FT-IT)と核磁気共鳴法(NMR: Nuclear Magnetic Resonance)を用い、デンプンの構成成分である、グルコースやデキストリン、さらにamyloseとamylopectinとフッ素の水素結合を1H/19FNMRを用いたHSQCにより解析した。（２）デンプン含有食品へのフッ素吸着の動力学炊飯前の洗米・浸漬における含水率の変化と、フッ素の拡散および吸着の過程を解析した。COMSOL Multiphysicsの固体力学モジュールと拡散吸着モジュールとを組み合わせて、米粒内のデンプンへのフッ素吸着動力学を解析した。（３）デンプンへのフッ素吸着機構を用いた水中のフッ素除去技術の開発（１）および（２）により、デンプンへのフッ素吸着機構と動力学を解析し、デンプン粒子を水中のフッ素除去技術として用いることを検討した。

The main contents of this paper are as follows: (1) the absorption mechanism of food sugar is used to explain that the water content is combined with water, 1 water is used to prevent damage, 2 water is combined with machine analysis, and the method is used to analyze the temperature. The combination of water and water with the combination of intramolecular water and urea, the combination of water and water, the combination of intramolecular water and intramolecular water, the combination of water and water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of water and water, the combination of intramolecular water and intermolecular water, the combination of water and water, the combination of intramolecular water and intermolecular The effect of urea (TMU) on the absorption of urea (urea), urea (urea), urea, urea The combination of water and water to inhibit the growth of drugs, the addition of amylosetin, amylopectin, phenylethanol, and the absorption of phenylethanol in the conditions of inhibition and inhibition of drugs. The method of machine analysis, the method of infrared absorption (FT-IT), the method of nuclear magnetic resonance (NMR: Nuclear Magnetic Resonance), the method of chemical analysis, the method of infrared absorption, the method of nuclear magnetic resonance (NMR: Nuclear Magnetic Resonance), the method of machine analysis, the method of infrared absorption, the method of infrared absorption, the method of nuclear magnetic resonance, the method of chemical analysis, the method of infrared absorption, the method of nuclear magnetic resonance (NMR: NMR), the method of molecular analysis, the method of infrared absorption, the method of infrared absorption, the method of infrared spectroscopy, the method of infrared absorption, the method of infrared absorption, the method of nuclear magnetic resonance, the method of chemical analysis, the method of infrared absorption, the method of infrared absorption (2) the water content of rice is reduced by washing rice before cooking, the moisture content is reduced, and the absorption process is analyzed. COMSOL Multiphysics solid mechanics, absorption mechanism, absorption kinetics analysis. (3) the chemical absorption mechanism is used for the removal of trace elements in the water. (1) the technology is used for the removal of trace elements in the water. (1) the absorption mechanism is analyzed in dynamics and the particles are removed in water.