Fig. 1

(A) Effects of SHMP on α-LA aggregation at acidic pH. The turbidity of α-LA without and with different SHMP concentrations at pH 2.0 (black squares), pH 7.4 (blue triangles) was recorded by measuring the absorbance at 350 nm. The turbidity of SHMP alone at pH 2.0 (red circles) was measured as a control. (B) The Turbidity kinetics of α-LA were measured in the presence of different SHMP concentration (0–5 mM) after various incubation periods at pH 2.0. The α-LA concentrations were fixed at 0.2 mg mL−1 in all the samples. The α-LA and SHMP controls do not show any turbidity of its own over all the concentration range and incubation periods.