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Bright yellow: A bright yellow or yellow-orange yolk usually suggests that the hen ate a lot of corn and/or alfalfa meal, per Houchins. Orange : A few factors can explain an orange yolk.
Chickens that are "pasture-raised" or "free range" will typically lay eggs with a darker, more orange-colored yolk, Steele said, "because their diet consists mainly of grasses, weeds and other ...
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 yellow color of the macula lutea (literally, yellow spot) in the retina of the human eye results from the presence of lutein and zeaxanthin. Again, both these specific ...
The resulting effect is a flattened and enlarged yolk shape. Yolk color is dependent on the diet of the hen. If the diet contains yellow or orange plant pigments known as xanthophylls, then they are deposited in the yolk, coloring it. Lutein is the most abundant pigment in egg yolk. [27]
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.
"More than 20 years ago, researchers discovered there was a correlation between high blood cholesterol and eggs, which gave eggs a bad rap due to the cholesterol level of an egg yolk ...
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Products containing tartrazine commonly include processed commercial foods that have an artificial yellow or green color, or that consumers expect to be brown or creamy looking. It has been frequently used in the bright yellow coloring of imitation lemon filling in baked goods.