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Qu'est-ce (qui) est provitamin - définition
PRECURSOR FORM OF VITAMINS
provitamin
¦ noun Biochemistry a substance which is converted into a vitamin within an organism.
Provitamin
A provitamin is a substance that may be converted within the body to a vitamin. The term previtamin is a synonym.
ergosterol
NADA
Provitamin D2; Ergosterin
[?:'g?st?r?l]
¦ noun a compound present in many fungi which is converted to vitamin D2 when irradiated with ultraviolet light.
Origin
early 20th cent.: from ergot, on the pattern of cholesterol.
Wikipédia
Provitamin
A provitamin is a substance that may be converted within the body to a vitamin. The term previtamin is a synonym.
The term "provitamin" is used when it is desirable to label a substance with little or no vitamin activity, but which can be converted to an active form by normal metabolic processes.
Exemples du corpus de texte pour provitamin
1. "They are perfect for lunch boxes and their nice flavour makes them a good option for eating raw so it would be good to see more people choosing them instead of less healthy snacks." Health benefits of carrots include having high amounts of carotene or provitamin A, which is considered good for general health, because they help mop up harmful free radical chemicals in the body.