FOAM BEHAVIOR OF BIOLOGICAL MEDIA .1. PROTEIN FOAMS

The foaminess and the time dependence of the surface tension σ of aqueous bovine serum albumin, bacterium protease and amyloglucosidase solutions were estimated and the time tDG necessary for them to attain their equilibrium surface tensions was determined. The foaminess could be described as a simple function of tDG. The time dependence of σ could be evaluated by Eq. (1) {Mathematical expression} The constant n of Eq. (1) is dependent on the protein concentration as well as on b. The foaminess can also be described as a simple function of n and/or nob. © 1979 Springer-Verlag.