Studies of the complexation of sugars by diffusion-ordered NMR spectroscopy

被引：42

作者：

Díaz, MD ^{[1
]}

Berger, S ^{[1
]}

机构：

[1] Univ Leipzig, Inst Analyt Chem, D-04103 Leipzig, Germany

来源：

CARBOHYDRATE RESEARCH | 2000年 / 329卷 / 01期

关键词：

lanthanide cations; sugars; complexation of; diffusion-ordered spectroscopy; DOSY; diffusion coefficient;

D O I：

10.1016/S0008-6215(00)00239-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In the presence of lanthanide cations, some sugars with a special relationship between their hydroxyl groups are able to form complexes in water. Diffusion-ordered NMR spectroscopy (DOSY) can be used as a tool to distinguish between the complexed and noncomplexed forms in a mixture due to the differences in their relative diffusion coefficient values. The lowest diffusion was attributed to the complexed species because of the increase in both size and molecular weight when compared with the noncomplexed forms. Mixtures of sugars of the same molecular weight and also the isomers of a single monosaccharide can be 'separated' by DOSY on the basis of their different tendencies to form complexes with different diffusion coefficient values. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1 / 5

页数：5

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