Fig. 3From: Enzyme adsorption-induced activity changes: a quantitative study on TiO2 model agglomeratesEnzymatic activity of β-gal in McIlvaine’s buffer both in the free state ([β-gal] = 0.5 µg mL−1) and adsorbed on TiO2 nanoparticle agglomerates ([TiO2] = 1 mg mL−1, [β-gal] = 8.5 µg mL−1). Ordinate scales on the left and the right hand side correspond to the activities of free and adsorbed β-gal, respectively, as indicated by arrows Back to article page