Interfacial dilatational elasticity and viscosity of β-lactoglobulin at air-water interface using pulsating bubble tensiometry

摘要: The ability of proteins to provide stability in foams is greatly influenced by their interfacial dilatational rheological properties. Surface tension response a pulsating bubble with an adsorbed layer β-lactoglobulin was measured for different frequencies and protein concentrations using tensiometer. A methodology, accounting adsorption/desorption as well variation surface concentration due expansion/contraction, developed the evaluation elasticity viscosity at from these measurements. adsorption rate constants were inferred pressure dynamics Langmuir minitrough. desorption rates shown be negligible spread monolayer when subjected compression proposed model employed infer β-lactoglob...