noun[mass noun] Biochemistry
A deep yellow pigment of the xanthophyll class, found in the leaves of plants, in egg yolk, and in the corpus luteum.
- Companies don't usually test for phytochemicals like lutein or lycopene because they're not yet considered nutrients.
- In this study, visual function is improved with lutein alone or lutein together with other nutrients.
- While the root of the beet is a nutritional powerhouse, the leaves are just as potent, containing antioxidant carotenoids, chlorophyll and lutein.
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