Figure 2: Chromatograms obtained from the HPLC system for a blank milk sample (upper profile) and a milk sample spiked with CYR (500 ng/mL) and MEL (250 ng/mL) (lower profile). The PDA detector was set at 206 nm. Peaks, 1= MEL (retention time, Rt= 3.08 min); 2= CYR (Rt= 6.23 min).