SPECIFIC AND NONSPECIFIC ION-POLYSACCHARIDE INTERACTIONS

被引：10

作者：

CESARO, A ^{[1
]}

CRESCENZI, V ^{[1
]}

DELBEN, F ^{[1
]}

GAMINI, A ^{[1
]}

LIUT, G ^{[1
]}

PAOLETTI, S ^{[1
]}

RIZZO, R ^{[1
]}

机构：

[1] UNIV ROME LA SAPIENZA, DIPARTIMENTO CHIM, I-00185 ROME, ITALY

来源：

THERMOCHIMICA ACTA | 1992年 / 199卷

关键词：

D O I：

10.1016/0040-6031(92)80245-R

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The interaction of ions with certain carbohydrate ligands in aqueous solution is examined. Simple systems are analysed to understand the role of conformational transitions and the possible specificity often advanced as an explanation for the complexity of the binding. Evidence of an extrinsic chirality of bound ionic chromophores is presented for nearly enantiomeric complexes of alginate and pectins with Pb2+ ions. Data on the thermodynamics of interaction between divalent cations and typical ionic polysaccharides are presented with a view to offering an interpretation based upon current theoretical models of polyelectrolyte solutions. In particular, reference is made to the linear correlation between thermodynamic state functions.

引用

页码：1 / 15

页数：15

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