carotenoid

(redirected from provitamin A carotenoids)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to provitamin A carotenoids: lutein

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.

ca·rot·e·noid

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

carotenoid

/ca·rot·e·noid/ (kah-rot´ĕ-noid)
1. any of a group of red, orange, or yellow pigmented polyisoprenoid hydrocarbons synthesized by prokaryotes and higher plants and concentrating in animal fat when eaten; examples are β-carotene, lycopene, and xanthophyll.
2. marked by yellow color.

provitamin A carotenoids  carotenoids, particularly the carotenes, that can be converted to vitamin A in the body.

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

[kərot′ənoid]
any of a group of red, yellow, or orange highly unsaturated pigments that are found in foods such as carrots, sweet potatoes, and leafy green vegetables. Many of these substances, such as carotene, are used in the formation of vitamin A in the body, whereas others, including lycopene and xanthophyll, show no vitamin A activity. Also spelled carotinoid.

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

1. any member of a group of red, orange or yellow pigmented polyisoprenoid 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.

carotenoid pigments
contribute to the yellow staining of fatty tissues especially in horses, Channel Island breeds of cattle and old cats.
References in periodicals archive ?
Li S, Tayie FA, Young MF, Rocheford T and WS White Retention of provitamin A carotenoids in high [beta]-carotene maize (Zea mays) during traditional African household processing.
De Moura F F, Miloff A and E Boy Retention of provitamin A carotenoids in staple crops targeted for biofortification in Africa: cassava, maize and sweet potato.
Kidmose U, Christensen LP, Agili SM and SH Thilsted Effect of home preparation practices on the content of provitamin A carotenoids in coloured sweet potato varieties (Ipomoea batatas Lam.
The following tables suggest dietary sources of vitamin A and provitamin A carotenoids.
Englberger L, Aalbersberg W, Ravi P, Bonnin E, Marks GC, Fitzgerald MH and J Elymore Further analyses on Micronesian banana, taro, breadfruit and other foods for provitamin A carotenoids and minerals.
Davey MW, van den Bergh I, Markham R, Swennen R and J Keulemans Genetic variability in Musa fruit provitamin A carotenoids, lutein and mineral micronutrient contents.
Similarly, HarvestPlus and its partners have developed analytical methods for provitamin A carotenoid analysis in sweet potato, cassava, maize, and banana.
1: Summary of the effectiveness of methods used for quantification of total carotenoids and provitamin A carotenoids in biofortified crops Provitamin A carotenoid Total carotenoid analysis analysis (in the presence of other carotenoids) Color scoring + - Spectrophotometry + - HPLC + + UPLC + + NIR + + iCheck + - Current application in References biofortified crops Color scoring None [4] Spectrophotometry Sweet potato [1] HPLC Cassava Maize [5, 6] UPLC Maize [7, 8] NIR Sweet potato Cassava Maize [9, 10] (npalacios, iCheck 2016) iCheck Cassava [11] HPLC--High-Performance Liquid Chromatography UPLC--Ultra-performance liquid chromatography NIR--near-infrared spectroscopy Table 6.
Our data corroborate the finding that increased use of provitamin A carotenoids occurs during malaria infection (17).
As discussed in the previous section, a 15 [micro]g/g (ppm) dry weight of provitamin A carotenoids (beta-carotene equivalents) breeding target was set (Table 8.
Reducing post-harvest degradation While it has been demonstrated that reaching and exceeding the HarvestPlus breeding targets is possible with current tools, reducing post-harvest degradation of provitamin A carotenoids through plant breeding remains challenging.
While it is clear that degradation of provitamin A carotenoids takes place in maize and that environmental factors such as oxygen and moisture are known to play a role, it is less clear if any of the degradation is enzymatic, i.