Brief Introduction
Lutein 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 and kale. In green plants, xanthophylls act to modulate light energy and serve as non-photochemical quenching agents to deal with triplet chlorophyll (an excited form of chlorophyll), which is overproduced at very high light levels, during photosynthesis. See xanthophyll cycle for this topic.
Lutein is obtained by animals directly or indirectly, from plants. Lutein is apparently[citation needed] employed by animals as an antioxidant and for blue light absorption. Lutein is found in egg yolks and animal fats. In addition to coloring yolks, lutein causes the yellow color of chicken skin and fat, and is used in chicken feed for this purpose. The human retina accumulates lutein and zeaxanthin. The latter predominates at the macula lutea while lutein predominates elsewhere in the retina. There, it may serve as a photoprotectant for retina from the damaging effects of free radicals produced by blue light.
Detailed Product Description
- Product name:Marigold Extract
- Latin name: Tagetes erecta L.
- Used part:Part: Marigold flowers
- Active ingredient: Lutein
- Biogenic origin: Wild in central and southern China
- CAS NO.: 127-40-2
- Specification: 5%-90%
- Molecular formula: C40H56O2
- Molecular Weight: 568.85
- Characters:Orange Fine Powder
- Usage: Pharmaceuticals, healthcares,and cosmetics
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