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Definition of provitamin

WebProvitamin A-carotenoid. Provitamin A carotenoid and is found in fruits and vegetables. The most abundant provitamin A is beta-carotene. Examples of other provitamins A-carotenoids are alpha-carotene and beta-cryptoxanthin. (source ) The bioavailability of provitamin A-carotenoids in fruit and vegetables is lower than once believed. Webcarotenoid [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 ...

Provitamins - definition of provitamins by The Free Dictionary

WebMeaning of provitamin a. What does provitamin a mean? Information and translations of provitamin a in the most comprehensive dictionary definitions resource on the web. WebWhat is the definition of the word PROVITAMIN? Here is a list of definitions for provitamin.. vitamin precursor; a substance that is converted into a vitamin in animal tissues shooting in finley wa https://lezakportraits.com

Carotenoids Linus Pauling Institute Oregon State …

WebProvitamin A carotenoids: Carotenoids are plant pigments (dyes). Once ingested, the body converts these compounds into vitamin A. There are more than 500 known carotenoids. One such carotenoid is beta-carotene. Beta-carotene is an antioxidant. Antioxidants protect cells from damage caused by substances called free radicals. Webprovitamin A: 1 n an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver Synonyms: carotene , carotin Types: beta-carotene … WebDefine provitamins. provitamins synonyms, provitamins pronunciation, provitamins translation, English dictionary definition of provitamins. n. A vitamin precursor that the body converts to its active form through normal metabolic processes. shooting in fillmore ca

Provitamin definition and meaning Collins English Dictionary

Category:The Fat-Soluble Vitamins: A, D, E and K - Healthline

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Definition of provitamin

Ergosterol - Wikipedia

Web7-Dehydrocholesterol (7-DHC) is a zoosterol that functions in the serum as a cholesterol precursor, and is photochemically converted to vitamin D 3 in the skin, therefore functioning as provitamin-D 3.The presence of this compound in human skin enables humans to manufacture vitamin D 3 (cholecalciferol) from ultraviolet UV-B rays in the sun light, via … Webβ-Cryptoxanthin. Like α- and β-carotene, β-cryptoxanthin is a provitamin A carotenoid. The vitamin A activity of β-cryptoxanthin from food was estimated to be 1 ⁄ 24 that of retinol, so it would take 24 µg of β …

Definition of provitamin

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WebJan 5, 2024 · Provitamin A is present in fruits, vegetables, and other plant-based products. Retinol is the main active form of vitamin A in the blood. Retinyl palmitate is the storage form of the vitamin. WebMar 17, 2024 · a provitamin of vitamin A; especially : carotene… See the full definition

Weba substance, e.g., ergosterol, from which the animal organism can form a vitamin. WebThe two main forms of vitamin A in the human diet are preformed vitamin A (retinol, retinyl esters), and provitamin A carotenoids such as alpha-carotene and beta-carotene that are converted to retinol. Preformed …

WebNoun: 1. provitamin A - an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver WebProvitamin definition: Any ingested substance which can be converted to a vitamin within the organism.

WebWhat is the definition of the word PROVITAMIN? Here is a list of definitions for provitamin.. vitamin precursor; a substance that is converted into a vitamin in animal …

WebOct 15, 2015 · Of the provitamin A carotenoids, beta-carotene is the most powerful when it comes to turning into vitamin A; twice as much beta-carotene becomes vitamin A than does alpha-carotene or beta ... shooting in fenton mo todayWebMar 13, 2024 · provitamin: [noun] a precursor of a vitamin convertible into the vitamin in an organism. shooting in fishkill new yorkWebProvitamin definition: a substance , such as carotene , that is converted into a vitamin in animal tissues Meaning, pronunciation, translations and examples shooting in fishkill ny todayWebDefine provitamins. provitamins synonyms, provitamins pronunciation, provitamins translation, English dictionary definition of provitamins. n. A vitamin precursor that the … shooting in fitzgerald gaWeb«Provitamin» A provitamin is a substance that may be converted within the body to a vitamin. The term previtamin is a synonym. For example, Provitamin B5 is a ... shooting in field hockeyWebprovitamin A: 1 n an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver Synonyms: carotene , carotin Types: beta-carotene an isomer of carotene that is found in dark green and dark yellow fruits and vegetables Type of: provitamin vitamin precursor; a substance that is converted into a ... shooting in fifeWebprovitamin: [ pro-vi´tah-min ] a substance, e.g., ergosterol, from which the animal organism can form a vitamin. shooting in federal way washington today