Figure 2

Second derivative FTIR spectra of BSA hydrolysis time-series: (A) The spectral region 1800–400 cm−1 of the untreated dry-films. (B) The spectral region 1800–1400 cm−1 of the untreated dry-films. (C) The spectral region 1800–400 cm−1 of the TFA-treated dry-films. (D) The spectral region 1800–1400 cm−1 of the TFA-treated dry-films.