Figure 1.

Spectroscopic characterization of BEO (black), BEO/QA-Ch-MCD (red), QA-Ch-MCD (dashed line). (a) ATR-FTIR full spectra, and in the box are the overlays of C-H (3000–2800 cm⁻¹) and C=O (1700 cm⁻¹) stretching bands, the green line represents the spectrum obtained by subtracting QA-Ch-MCD from the BEO/QA-MCD spectrum and evidencing the shift of the 2918 cm⁻¹ band. (b) UV-Vis full spectra, and in the box are the second derivative profiles evidencing the shift of the 250 nm band.