Surface activity measured as a function of the detergent concentration for Cm-TAC (red open and black solid squares), m = 10–18 (A); Cm-gluc (red open, blue open, and blue solid circles), m = 6–8, 10, 12 (B); Cm-malt, (red open, blue open, and blue solid triangles), m = 6, 8–10, 12–14 (C); and Anameg-7 (red stars) and C7-gluc (red open circles) (D). Measurements were performed at pH 7.4 (50 mM Tris/HCl, 114 mM NaCl), T = 24°C. Solid lines represent fits to data using Gibbs adsorption isotherm; dashed line represents the binding isotherm calculated with the Szyszkowski equation (22,23). Color code, see legend to Fig. 1.