provitamin


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Related to provitamin: Prooxidant, provitamin A carotenoids

provitamin

 [pro-vi´tah-min]
a substance, e.g., ergosterol, from which the animal organism can form a vitamin.

pro·vi·ta·min

(prō-vī'tă-min),
A substance that can be converted into a vitamin; for example, β-carotene.

provitamin

/pro·vi·ta·min/ (-vi´tah-min) a precursor of a vitamin.
provitamin A  usually β-carotene, sometimes including any of the provitamin A carotenoids.
provitamin D2  ergosterol.
provitamin D3  7-dehydrocholesterol.

provitamin

(prō-vī′tə-mĭn)
n.
A vitamin precursor that the body converts to its active form through normal metabolic processes. Carotene, for example, is a provitamin of vitamin A.

provitamin

[prōvī′təmin]
a precursor of a vitamin; a substance found in certain foods that in the body may be converted into a vitamin. Also called previtamin.

pro·vi·ta·min

(prō'vī'tă-min)
An inactive form of a vitamin that needs activation before it can be used by the body.

provitamin

A substance that is converted in the body to a VITAMIN.

provitamin

substance converted within the body forming a vitamin

pro·vi·ta·min

(prō'vī'tă-min)
An inactive form of a vitamin that needs activation before it can be used by the body.

provitamin (prōvī´təmin),

n a substance in food that may be transformed into a vitamin within the body; a potential vitamin.

provitamin

a substance, e.g. ergosterol, from which the animal organism can form a vitamin.

provitamin A
References in periodicals archive ?
Rodriguez-Amaya DB Carotenoids and food preparation: The retention of provitamin A carotenoids in prepared, processed, and stored foods.
The first study investigated if fresh avocado, when eaten with high beta-carotene tomato sauce, would promote the absorption of provitamin A carotenoids, and the conversion of these carotenoids to an active form of vitamin A.
The majority of dietary retinyl esters and provitamin carotenoids are absorbed in the jejunum through cellular retinol binding-proteins.
A team of plant geneticists and crop scientists pioneers an economical approach to the selective breeding of corn that can boost levels of provitamin A, the precursors that are converted to vitamin A upon consumption.
The shower gel has grapefruit oil and camomile extract, while the moisturising bath cream contains provitamin B5 (just like the famous shampoos
Or try Pure Moisturising Bath Cream, 98p for 400ml, enriched with nourishing lychee extract and provitamin B5.
The main polyphenols found in eggplant are phenolic acids (chlorogenic acid, caffeic acid, p-coumaric p acid), but this vegetable is poor in provitamin A and vitamin E.
6) The term 'vitamin A' is a generic label for beta-ionone derivatives other than provitamin A carotenoids.
It is a great source of vitamin C, provitamin A, chlorophyll, calcium, sodium, magnesium, and iron and cleanses and strengthens glands, organs, and tissues to boot.
It is his personal view that plants, too, are complex organisms; every genetic modification caused by man (through radiation such as that emitted at Chernobyl, or viruses such as presently used in GMO), however small that modification may be, will cause damage, irreparable damage which often cannot be seen, because man has only discovered a limited number of safe vitamins and provitamin substances.
The claim: 12 fruit juices - orange, apple, grape, pineapple, passion fruit, apricot, banana, mango, peach, guava, pear, lemon - give added vitamins B1, B2, B6, E, C and Provitamin A
Beauty bulletin TRESEMME are on hand with a new ProVitamin B5 enriched leave-in detangler (right) to save hair from frazzled by cold weather and central heating.