| 利用27Al NMR研究茶多酚与铝形成配合物的形态 |
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| 引用本文： | 刘丽娜,严宝珍.利用27Al NMR研究茶多酚与铝形成配合物的形态[J].分析科学学报,2006,22(6):631-635. |
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| 作者姓名： | 刘丽娜 严宝珍 |
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| 作者单位： | 北京化工大学理学院,北京,100029 |
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| 摘 要： | 采用27Al NMR技术,研究了不同茶叶中茶多酚与铝形成配合物的形态。考察了在不同pH值和配体/金属(L/M)下铝的存在形态,系统地研究了焦性没食子酸、儿茶酚等官能团模拟化合物与铝的配位体系中铝的形态,探讨了配体取代基的个数与焦性没食子酸-铝配合物的δ27Al的关系,获得了非常有意义的规律,并确定了茶多酚与铝配合物的结构。
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| 关 键 词： | ~(27)AlNMR 茶多酚 焦性没食子酸 铝 配位作用 |
| 文章编号： | 1006-6144（2006）06-0631-05 |
| 收稿时间： | 2005-10-14 |
| 修稿时间： | 2006-02-10 |
Studies of Aluminium Chelates with Tea Polyphenols by 27Al NMR |
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| LIU Li-na,YAN Bao-zhen.Studies of Aluminium Chelates with Tea Polyphenols by 27Al NMR[J].Journal of Analytical Science,2006,22(6):631-635. |
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| Authors: | LIU Li-na YAN Bao-zhen |
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| Abstract: | With(~(27)Al NMR,) aluminium chelates with tea-polyphenols extracted from different teas was studied and the influence of pH and L/M(ligand/metal) on the existance forms of aluminium was examined.Aluminium chelates with a number of model ligands(pyrogallol and catechin) was also investigated systemically,and the relation between the number of the ligands and chemical shifts were discussed.As a result,chemical structure of aluminium chelates with tea polyphenols was firstly confirmed. |
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| Keywords: | ~(27)Al NMR Tea polyphenols Pyrogallol Aluminium Coordination forms |
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