Interactions of selected flavonoids with NaDS micelles

M. Soledade C. S. Santos , Sara Lacerda (1) , Ester Barbosa

1 Centro de Química e Bioquímica, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa

Critical micelle concentrations (cmc) and degree of counterion dissociation (β) of sodium dodecyl sulphate micelles, in the presence of two flavonoids type additives, were determined at 298.15 ± 0.01 K using electrical conductivity. The dependences of the cmc on additive concentration follow a generalised type Setchenow equation and allowed the determination of Setchenow micellisation constants (K M ) for each solute. K M values revealed the high hydrophobicity of these compounds, and suggest that structural factors are determinant for the partition towards the micellar phase.

Domaines: Sciences du Vivant [q-bio]

M. Soledade C. S. Santos, Sara Lacerda, Ester Barbosa. Interactions of selected flavonoids with NaDS micelles. Progress in Colloid and Polymer Science, Springer Berlin Heidelberg, pp.73-77, 2004, ⟨10.1007/b11645⟩. ⟨hal-02081118⟩