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词汇 carotenoid
释义

Definition of carotenoid in English:

carotenoid

noun kəˈrɒtɪnɔɪdkəˈrät(ə)nˌoid
Chemistry
  • Any of a class of mainly yellow, orange, or red fat-soluble pigments, including carotene, which give colour to plant parts such as ripe tomatoes and autumn leaves.

    〔化〕类胡萝卜素

    as modifier carotenoid pigments
    Example sentencesExamples
    • Birds such as goldfinches, orioles, and cardinals owe their colorful plumages to carotenoids.
    • 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.
    • Without carotenoids in the diet, animals, including ourselves, would suffer serious vision defects and potentially blindness.
    • Another class, the carotenoids, creates the orange color of carrots and pumpkins.
    • This color reveals the presence of yellow, orange and red pigments known as carotenoids.

Definition of carotenoid in US English:

carotenoid

nounkəˈrät(ə)nˌoid
Chemistry
  • 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

    〔化〕类胡萝卜素

    as modifier carotenoid pigments
    Example sentencesExamples
    • Without carotenoids in the diet, animals, including ourselves, would suffer serious vision defects and potentially blindness.
    • 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.
    • Another class, the carotenoids, creates the orange color of carrots and pumpkins.
    • Birds such as goldfinches, orioles, and cardinals owe their colorful plumages to carotenoids.
    • This color reveals the presence of yellow, orange and red pigments known as carotenoids.
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