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Lutein (/ ˈ lj uː t i ɪ n,-t iː n /; [2] from Latin luteus meaning "yellow") is a xanthophyll and one of 600 known naturally occurring carotenoids.Lutein is synthesized only by plants, and like other xanthophylls is found in high quantities in green leafy vegetables such as spinach, kale and yellow carrots.
In 2012, the Physicians' Health Study II (PHS-II) found that participants who took a Centrum-brand multivitamin each day for an average of 11 years had no change in cancer mortality or cardiovascular disease mortality compared to the placebo group.
Separate studies have confirmed that large amounts of lutein, a type of carotenoid that can be used as a drop-in fuel source, are also produced. [10] [11] [12] Auxenochlorella biofuel production poses similar efficiency problems as other algal species, as the pyrolysis and drying process are expensive and time- consuming. In addition, the ...
In plants, the xanthophyll lutein is the most abundant carotenoid and its role in preventing age-related eye disease is currently under investigation. [5] Lutein and the other carotenoid pigments found in mature leaves are often not obvious because of the masking presence of chlorophyll. When chlorophyll is not present, as in autumn foliage ...
The group of xanthophylls includes (among many other compounds) lutein, zeaxanthin, neoxanthin, violaxanthin, flavoxanthin, and α- and β-cryptoxanthin. The latter compound is the only known xanthophyll to contain a beta-ionone ring, and thus β- cryptoxanthin is the only xanthophyll that is known to possess pro-vitamin A activity for mammals.
[46] [needs update] Including lutein and zeaxanthin supplements in with a multivitamin does not improve progression of macular degeneration. [46] The need for high-quality studies looking at the safety of taking multivitamins has been highlighted. [46] According to the Harvard School of Public Health: "... many people don't eat the healthiest ...
Red, blue, and purple colors of berries derive mainly from polyphenol phytochemicals called anthocyanins. Cucurbita fruits, including squash and pumpkin, typically have high content of the phytochemical pigments called carotenoids.
Triptorelin is a gonadorelin analogue, also known as luteinizing hormone releasing analogue (GnRH analogue, LHRH analogue). [3] The drug binds to receptors in the pituitary gland and stimulates secretion of gonadotropins (namely luteinizing hormone LH and follicle-stimulating hormone FSH).