Investigating the Influence of Polysorbate 20/80 and Polaxomer P188 on the Surface & Interfacial Properties of Bovine Serum Albumin and Lysozyme.

In conclusion, it was seen that competitive adsorption between proteins and common excipient surfactants is dictated by the type of protein and its effective structuring/rigidity at the surface as reflected through surface elasticity and surface tan delta values. BSA was seen to exhibit a higher surface elasticity than lysozyme, and therefore has a more rigid structure and is more competitive at the interface.