| Vitamin K1在水-有机溶剂中单电子还原电位的测定 |
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| 引用本文： | 陈家富,储高升,葛学武,张志成,姚思德. Vitamin K1在水-有机溶剂中单电子还原电位的测定[J]. 物理化学学报, 1999, 15(11): 1030-1035. DOI: 10.3866/PKU.WHXB19991114 |
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| 作者姓名： | 陈家富 储高升 葛学武 张志成 姚思德 |
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| 作者单位： | Department of Applied Chemistry,University of Science and Technology of China,Hefei 230026,Labaratory of Radiation Chemistry,shanghai Institute of Nuclear Research,Chinese Academy of Science,Shanghai 201800 |
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| 基金项目： | 中国科学院辐射化学开放实验室资助 |
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| 摘 要： | ＶｉｔａｍｉｎＫ１（ＶＫ１）是一种非常重要的脂溶性维生素，其止血功能已为人们所熟悉．下图显示在生物体内ＶＫ参与的止血过程，在这个氧化还原循环过程中，ＶＫＨ２环氧化变成ＶＫＯ与Ｇｌｕ(谷氨酸蛋白)羧化而转变成Ｇｌａ(γ-羧基谷氨酸蛋白)是同时发生的，但前一?..
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| 关 键 词： | Vitamin K1 单电子还原电位 脉冲辐解 |
| 收稿时间： | 1999-01-28 |
| 修稿时间： | 1999-03-22 |
Determination of One-Electron Reduction Potential of Vitamin K1 in Mixed Solvent |
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| Chen Jiafu Chu Gaosheng Ge Xuewu Zhang Zhicheng Yao Side. Determination of One-Electron Reduction Potential of Vitamin K1 in Mixed Solvent[J]. Acta Physico-Chimica Sinica, 1999, 15(11): 1030-1035. DOI: 10.3866/PKU.WHXB19991114 |
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| Authors: | Chen Jiafu Chu Gaosheng Ge Xuewu Zhang Zhicheng Yao Side |
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| Affiliation: | Department of Applied Chemistry,University of Science and Technology of China,Hefei 230026|Labaratory of Radiation Chemistry,shanghai Institute of Nuclear Research,Chinese Academy of Science,Shanghai 201800 |
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| Abstract: | The reaction process of VK1 and isopropanol radical has been investigated by using pulse radiolytical technique. It has been found that the reduction states of VK1 exist in two forms under different pH conditions, that are VK1H•(pH < 5.4) and VK1-• (pH > 5.4), their maximum absorption peaks are 370 nm and 390 nm respectively. Selecting MV2+as the refereance, the one electron reduction potential of VK1 in N2 saturated aqueous isopropanol acetone mixed solvent and in N2O saturated water-isopropanol has been determined as -266 and -279mV respectively. |
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| Keywords: | Vitamin K1 One electron reduction potential Pulse radiolysis |
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