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About Lutein

   Lutein (pronounced /Luːti.ɨn/, /ˈluːtiːn/ from Latin luteus meaning "yellow") is a Xanthophyll and one of 600 known naturally-occurring Carotenoids.

   Found in green leafy vegetables such as spinach and kale, Lutein is employed by organisms as an antioxidant and for blue light absorption. Lutein is also found in egg yolks, animal fats, and the retina (Zeaxanthin predominates at the macula lutea while Lutein predominates elsewhere in the retina).

Dr. Abhay Kumar
As a food additive, Lutein has the E number E161b and is extracted from the petals of marigold (Tagetes erecta). (Reff-Wikipedia source) .
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AS A PIGMENT

   These Xanthophylls, like its sister compound Zeaxanthin, has primarily been used as a natural colorant due to its orange-red color. Lutein absorbs blue light and therefore appears yellow at low concentrations and orange-red at high concentrations.

   Lutein was traditionally used in chicken feed to provide the yellow color of broiler chicken skin. Polled consumers viewed yellow chicken skin more favourable than white chicken skin. Such Lutein fortification also results in a darker yellow egg yolk. Today the coloring of the egg yolk has become the primary reason for feed fortification. Lutein is not used as a colorant in other foods due to its limited stability, especially in the presence of other dyes.

WHERE TO FIND LUTEIN

  Lutein is found naturally in foods such as dark green leafy vegetables and egg yolks. Other Lutein sources include vitamins and dietary supplements, as well as certain processed foods. Lutein is one of over 600 known naturally occurring Carotenoids. Found in green leafy vegetables such as spinach and kale, Lutein is employed by organisms as an antioxidant and for blue light absorption. Lutein is covalently bound to one or more fatty acids present in some fruits and flowers, notable Marigolds (Tagetes). Saponification of Lutein esters yields Lutein in approximately a 2:1 weight-to-weight conversion. Lutein is also found in egg yolks, animal fats and the corpus luteum. Foods considered good sources of the nutrients also include kale, turnip greens, collard greens, romaine lettuce, broccoli, zucchini, corn, garden peas and Brussels sprouts.

Different sources Of Lutein and amount present

Product

Lutein/zeaxeathanin (micrograms per hundred grams)

  kale

  18200

  spinach

  12198

  garden peas

  2593

  zucchini

  2125

  Brussel sprouts

  1590

  Pistachio nuts

  1205

  broccoli

  1121

  Maize/corn

  644

  kiwifruit

  122

  turnip greens

 

  romaine lettuce

 

  collard greens

 

  egg