Racz C.P.,Babes Boiyai University of Cluj Napoca |
Pasca R.-D.,Babes Boiyai University of Cluj Napoca |
Szabolcs S.,Babes Boiyai University of Cluj Napoca |
Kacso I.,Romanian Institute of Isotopic And Molecular Technology |
And 4 more authors.
Revista de Chimie | Year: 2011
The complexation of β-cyclodextnn (βCD) and quercetin (Que) in aqueous alcoholic solutions is investigated by UV-Vis spectroscopy. Three different aqueous media, namely pH 3, unbuffered (pH 5.5) and pH 7, are used to vary the environmental conditions and the interaction between host (βCD) and guest (Que) molecules. The equilibrium constants for the formation of the inclusion βCD-Que complex are estimated from two different absorption bands and the thermodynamics of the complexation is discussed.