A. Dussaud et M. Vignesadler, SURFACE-PROPERTIES OF PROTEIN ALCOHOLIC SOLUTIONS .3. AGING EFFECT, Journal of colloid and interface science, 167(2), 1994, pp. 266-274
The transient surface dynamic properties of alcoholic solutions of BSA
and beta-casein are studied by the longitudinal wave method over a pe
riod of 4 h. The aging effect is the most influential on the surface t
heology when the ethanol content is 5%, v/v. It affects mostly the app
arent surface viscosity. A parametric analysis shows that the surface
theology evolution is assigned to change of the residual elasticity an
d of the constant rate of the surface relaxation. This has been relate
d to the protein unfolding properties and to the influence of ethanol
on the protein secondary structure. (C) 1994 Academic Press, Inc.