Fig. 2.

Adsorption isotherms of lysozyme on Ludox TMA for several pH values without added salt: Experimental data (symbols) and fits by the GAB model (lines). The adsorbed amount is expressed as protein mass per unit area (Γ) and by the mean number of protein molecules per silica particle (N). The monolayer capacity based on a dense packing of protein molecules in side-on orientation (A ₀ = 13.5 nm²) is indicated by the dashed line