Interfacial Rheology of Globular and Flexible Proteins at the Hexadecane/Water Interface: Comparison of Shear and Dilatation Deformation

摘要: After long-time exposure, protein adsorption at fluid/fluid interfaces is documented to produce interfacial, gellike networks. Formation of this network apparently results from adsorption-induced conformational changes and subsequent interprotein aggregation the interface. We utilize interfacial shear dilatational rheology probe structure a globular protein, lysozyme, disordered β-casein, kinetics formation hexadecane/water For first time, we present detailed comparison responses. moduli grow with interface age indicating transition fluidlike behavior early times (solidlike behavior). Conversely, β-casein change very little age; in addition, both G ‘ G ‘ ‘ for are an order magnitude smaller than those lysozyme. The strong intramolecular interactions that stabilize...