Medical term:
Carotenoid
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
ca·rot·e·noid
(ka-rot'e-noyd),1. Resembling carotene; having a yellow color.
2. One of the carotenoids.
Farlex Partner Medical Dictionary © Farlex 2012
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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.Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
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.McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
ca·rot·e·noid
(kă-rot'ĕ-noyd)1. Resembling carotene; having a yellow color.
2. One of the carotenoids.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
ca·rot·e·noids
(ka-rot'e-noydz),Generic term for a class of carotenes and their oxygenated derivatives (xanthophylls) consisting of 8 isoprenoid units (thus, tetraterpenes) joined so that the orientation of these units is reversed at the center, placing the two central methyl groups in a 1,6 relationship in contrast to the 1,5 of the others. All carotenoids may be formally derived from the acyclic C40H56 structure known as lycopene, with its long central chain of conjugated double bonds by hydrogenation, dehydrogenation, oxidation, cyclization, or combinations of these. Included as carotenoids are some compounds arising from certain rearrangements or degradations of the carbon skeleton, but not retinol and related C20 compounds. The nine-carbon end groups may be acyclic with 1,2 and 5,6 double bonds or cyclohexanes with a single double bond at 5,6 or 5,4 or cyclopentanes or aryl groups; these are now designated by Greek letter prefixes preceding "carotene" (α and δ, which are used in the trivial names α-carotene and δ-carotene, are not used for that reason). Suffixes (for example, -oic acid, -oate, -al, -one, -ol) indicate certain oxygen-containing groups (for example, acid, ester, aldehyde, ketone, alcohol); all other substitutions appear as prefixes (for example, alkoxy-, epoxy-, hydro-). ). The configuration about all double bonds is trans unless cis and locant numbers appear. The prefix retro- is used to indicate a shift of one position of all single and double bonds; apo- indicates shortening of the molecule. Many carotenoids have anticancer activities.
Farlex Partner Medical Dictionary © Farlex 2012
ca·rot·e·noids
(kă-rot'ĕ-noydz)Generic term for a class of carotenes and their oxygenated derivatives (xanthophylls).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
carotenoids
A large group of yellow or orange pigments occurring in plants some of which have antioxidant properties. Some of the carotenoids are carotenes.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
carotenoids
a group of yellow/orange pigments found in plants, animals and microorganisms, which includes CAROTENES (orange) and xanthophylls (yellow).Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Carotenoids
Carotenoids are yellow to deep-red pigments.
Mentioned in: Vitamin A Deficiency
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
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