Xanthophyll is one of the most widespread carotenoid alcohols in nature that was originally isolated from egg yolk. It has also been identified via chromatography in algae, nettles, and the petals of many yellow flowers.;Xanthophyll is one of the most widespread carotenoid alcohols in nature that was originally isolated from egg yolk. It has also been identified via chromatography in algae, nettles, and the petals of many yellow flowers.