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Foam behavior of biological media

Authors:	W Bumbullis K Schügerl

Institution:	(1) Institut für Technische Chemie der Universität Hannover, Callinstr. 3, D-3000 Hannover, Germany

Abstract:	Summary The influence of the alcohol concentration on the foaminess, , of-BSA-solutions is considered. This effect is calculated by means of the function (C_BSA . f), where f=1 for pure protein solutions and f>1 for alcohol solutions. f is calculated by f = 2^TT_eff. Here, $\Delta {\text{T}}_{{\text{T}}_{{\text{eff}}} } \user1{ = }\Delta {\text{T}}_{\text{T}} \user1{ + }\Delta {\text{T}}_{\text{D}}$ where T_T is the turbidity temperature change due to solvent structure effects and T_D, the temperature correction due to alcohol-protein interaction. The constants necessary to calculate T_T and T_D are tabulated. The agreement between the calculated and measured foaminess , as a function of the n-propanol concentration is satisfactory and for methanol or ethanol excellent.

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