May 01, 2013 · An HPLC, Aijiren equipped with degasser, quaternary pump, autosampler, thermostat column compartment and a diode array detector (DAD); A Phenomenex Lichrosorb Silica gel column, 250 mm × 4.6 mm, 5 μm was used for zeaxanthin analysis using the conditions listed in Table 1. Standard curves for zeaxanthin and lutein were generated using