Fourier Transform Infrared (FTIR) spectroscopic data were acquired in transmission mode with a SMART iTR Nocolet iZ10 spectrometer (Thermo Fisher Scientific) from 600 to 4000 cm -1 . One hundred background and sample scans were performed with a resolution of 4.0, sample gain of 8.0, optical velocity of 0.4747 and aperture of 80.0.