Fig. (2) a) OH-stretching region (3700 <Δω< 3000 cm-1 spectral range) for different values of temperature, i.e. T=25°C, 30°C, 35°C, 40°C, 45°C and 50°C for sucrose water mixture and b) OH-stretching region (3700 <Δω< 3000 cm-1 spectral range) for different values of temperature, i.e. T=25°C, 30°C, 35°C, 40°C, 45°C and 50°C for trehalose water mixture.