Any of a class of mainly yellow, orange, or red fat-soluble pigments, including carotene, which give color to plant parts such as ripe tomatoes and autumn leaves. They are terpenoids based on a structure having the formula C40H56.
- This color reveals the presence of yellow, orange and red pigments known as carotenoids.
- Another class, the carotenoids, creates the orange color of carrots and pumpkins.
- The yellow colour comes largely from carotenoids, which hens get from plant foods, or lutein, which is added to feeds specifically to colour egg yolk.
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