carotenoid

ca·rot·e·noid

C0121600 (kə-rŏt′n-oid′)n. Any of a class of yellow to red pigments, including the carotenes and the xanthophylls.adj. Of or relating to such a pigment.

carotenoid

(kəˈrɒtɪˌnɔɪd) or

carotinoid

n (Biochemistry) any of a group of red or yellow pigments, including carotenes, found in plants and certain animal tissuesadj (Biochemistry) of or resembling carotene or a carotenoid

ca•rot•e•noid

or ca•rot•i•noid

(kəˈrɒt nˌɔɪd)

n. 1. any of a group of red and yellow pigments, chemically similar to carotene, contained in animal fat and some plants. adj. 2. similar to carotene. 3. pertaining to carotenoids. [1910–15]

Thesaurus

Noun

carotenoid - any of a class of highly unsaturated yellow to red pigments occurring in plants and animalscarotene - yellow or orange-red fat-soluble pigments in plantslycopene - carotenoid that makes tomatoes red; may lower the risk of prostate cancerbeta-carotene - an isomer of carotene that is found in dark green and dark yellow fruits and vegetableslutein, xanthophyl, xanthophyll - yellow carotenoid pigments in plants and animal fats and egg yolkszeaxanthin - yellow carotenoid (isomeric with lutein and occurs widely with it) that is the main pigment in yellow Indian cornantioxidant - substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxidesphytochemical - a chemical substance obtained from plants that is biologically active but not nutritivepigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)

Translations

carotenoid

Carotenoid

Any of a class of yellow, orange, red, and purple pigments that are widely distributed in nature. Carotenoids are generally fat-soluble unless they are complexed with proteins. In plants, carotenoids are usually located in quantity in the grana of chloroplasts in the form of carotenoprotein complexes. Carotenoprotein complexes give blue, green, purple, red, or other colors to crustaceans, echinoderms, nudibranch mollusks, and other invertebrate animals. Some coral coelenterates exhibit purple, pink, orange, or other colors due to carotenoids in the calcareous skeletal material. Cooked or denatured lobster, crab, and shrimp show the modified colors of their carotenoproteins.

The general structure of carotenoids is that of aliphatic and aliphatic-alicyclic polyenes, with a few aromatic-type polyenes. Most carotenoid pigments are tetraterpenes with a 40-carbon (C₄₀) skeleton. More than 300 carotenoids of known structure are recognized, and the number is still on the rise.

There are several biochemical functions in which the role of carotenoids is well understood. These include carotenoids in the photosynthetic apparatus of green plants, algae, and photosynthetic bacteria, where carotenoids function as a blue light-harvesting pigment (antenna or accessory pigment) for photosynthesis. Thus carotenoids make it possible for photosynthetic organisms more fully to utilize the solar energy in the visible spectral region. See Chlorophyll, Photosynthesis

Another function of carotenoids is to protect biological systems such as the photosynthetic apparatus from photodynamic damage. This is done by quenching the powerful photodynamic oxidizing agent, singlet oxygen, produced as an undesirable by-product of the exposure of pigmented organisms to light.

Perhaps the most important industrial application of carotenoids is in safe coloration of foods, as exemplified in the coloring and fortification of margarine and poultry feedstuff.

carotenoid

[kə′rät·ən‚ȯid] (biochemistry) A class of labile, easily oxidizable, yellow, orange, red, or purple pigments that are widely distributed in plants and animals and are preferentially soluble in fats and fat solvents.

carotenoid

[kah-rot´ĕ-noid] 1. any member of a group of red, orange, or yellow pigmented lipids found in carrots, sweet potatoes, green leaves, and some animal tissues; examples are the carotenes, lycopene, and xanthophyll.2. marked by yellow color.3. lipochrome.

ca·rot·e·noid

(ka-rot'e-noyd), 1. Resembling carotene; having a yellow color. 2. One of the carotenoids.

carotenoid

(kə-rŏt′n-oid′)n. Any of a class of yellow to red pigments, including the carotenes and the xanthophylls.adj. Of or relating to such a pigment.

carotenoid

Any of a family of nutrients that are precursors of vitamin A and have antioxidant activity. While beta carotene1 is the best known of the group, long assumed to be responsible for the reduction of strokes, cardiovascular disease and cancersm 600 carotenoids have been identified. 40 are common in fruits and vegetables with the highest concentration in tomato juice, followed by kale, collard greens, spinach, sweet potato, chard, watermelon, carrots and pumpkin; high carotenoid consumption is associated with a decreased incidence of bladder, colon, lung and skin cancers, as well as growth of cancer cells in general.

carotenoid

Nutrition A vitamin A precursor with antioxidant activity; although beta carotene is the best known of the group, 600 carotenoids have been identified; 40 are common in fruits and vegetables; high carotenoid consumption is associated with ↓ risk of bladder, colon, lung, skin CAs and growth of CA cells. See Beta carotene, Vitamin A.

ca·rot·e·noid

(kă-rot'ĕ-noyd) 1. Resembling carotene; having a yellow color. 2. One of the carotenoids.

carotenoid

ca·rot·e·noid

carotenoid

carotinoid

ca•rot•e•noid

or ca•rot•i•noid

carotenoid

Carotenoid

carotenoid

carotenoid

carotenoid

ca·rot·e·noid

carotenoid

carotenoid

carotenoid

ca·rot·e·noid

carotenoid

Words related to carotenoid

noun any of a class of highly unsaturated yellow to red pigments occurring in plants and animals

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