The Influence of Arginine on the Response of Enamel Matrix Derivative (EMD) Proteins to Thermal Stress: Towards Improving the Stability of EMD-Based Products - Fig 5

Second derivative FT-IR spectra at 20°C from dried EMD-BR buffer solutions as-prepared (solid curves) and after heat treatment at 80°C (hatched curves): (a) pH 2 without arginine; (b) pH 2 with arginine; (c) pH 5 without arginine; (d) pH 5 with arginine.