Fig. 4. HPLC profile of a dehusked black–purple rice extract at 450 nm of lutein. Peak 16: lutein; peak 17: zeaxanthin; peak 18: lycopene and peak 19: b-carotene. Inset:
absorbance spectrum of peak 16, lutein. For identification of peaks 16–19 see Table 1. (For interpretation of the references to colour in this figure legend, the reader is referred
to the web version of this article.)