Voltammetric and spectrophotometric study on the complexation of glibenclamide with β-cyclodextrin

被引:12
作者
Radi, Abd-Elgawad [1 ]
Eissa, Shimaa [1 ]
机构
[1] Mansoura Univ, Dept Chem, Fac Sci Dumyat, Dumyat 34517, Egypt
关键词
Cyclodextrin; Glibenclamide; Spectrophotometry; Voltammetry; GLYBURIDE SOLUBILITY; DISSOLUTION;
D O I
10.1007/s10847-010-9801-9
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The formation of an inclusion complex of glibenclamide (GL) with beta-cyclodextrin (beta-CD) in an aqueous ethanolic buffer solution of pH 7.0 has been investigated by UV spectrophotometry and differential pulse voltammetry and its stability constant is determined to be 855 and 354.15 M-1, respectively. The phase solubility profile, based on the spectrophotometric absorbance's variations, was classified as A(L)-type, indicating the formation of 1:1 stoichiometric inclusion complex of glibenclamide with beta-CD with a stability constant value, K (S), of 846 M-1.
引用
收藏
页码:417 / 421
页数:5
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