葉黃素
Lutein \Lu"te*in\, n. [From corpus luteum.] (Physiol. Chem.) A substance of a strongly marked yellow color, extracted from the yelk of eggs, and from the tissue of the corpus luteum.
lutein n : yellow carotenoid pigments in plants and animal fats and egg yolks [syn: {xanthophyll}, {xanthophyl}]