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Meso-zeaxanthin (3R,3′S-zeaxanthin) is a xanthophyll carotenoid, and is one of the three stereoisomers of zeaxanthin. The meso- form is the second most abundant in nature, after 3R,3′R-zeaxanthin, which is produced by plants and algae. [ 1 ]
The xanthophylls found in the bodies of animals including humans, and in dietary animal products, are ultimately derived from plant sources in the diet. For example, the yellow color of chicken egg yolks , fat, and skin comes from ingested xanthophylls—primarily lutein , which is added to chicken feed for this purpose.
The principal natural form of zeaxanthin is (3R,3′R)-zeaxanthin. The macula mainly contains the (3R,3′R)- and meso-zeaxanthin forms, but it also contains much smaller amounts of the third (3S,3′S) form. [8] Evidence exists that a specific zeaxanthin-binding protein recruits circulating zeaxanthin and lutein for uptake within the macula. [9]
Astaxanthin / æ s t ə ˈ z æ n θ ɪ n / is a keto-carotenoid within a group of chemical compounds known as carotenones or terpenes. [3] [4] [5] Astaxanthin is a metabolite of zeaxanthin and canthaxanthin, containing both hydroxyl and ketone functional groups.
Lutein and zeaxanthin, two substances found in eggs, also play a key role in maintaining cellular health, especially of the eyes, skin, and hair. (A tip: Most of the vitamin D is found int the
You can use vitamin E or vitamin E oil at any time of day, but due to its antioxidant properties, Dr. Luke typically recommends “using these products in the morning to help protect the skin and ...
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.
Egg oil is a potential source of polyunsaturated fatty acids such as docosahexaenoic acid and arachidonic acid for infant nutrition [13] or combined with fish oil for infant formula production. [14] It is also a source of vitamin D .