The main difference between vitamin A and beta carotene is that vitamin A serves as an essential micronutrient whereas beta carotene serves as the precursor of vitamin A. However, vitamin A can be found in a ready-to-use form in animal food. Both vitamin A and beta carotene are lipid soluble compounds. 29 янв. 2018 г.
Is there A difference between vitamin A and beta-carotene?
Put simply, vitamin A is a fat soluble vitamin found in various foods that is both good for our eyes and benefits our immune system. Beta-carotene is a provitamin “carotenoid” that helps give vegetables their bright pigmentation, and is also good for our vision and overall growth and development.
Is vitamin A formed from carotene?
Vitamin A is structurally related to β-carotene. β-Carotene is converted into vitamin A in the liver. Two molecules of vitamin A are formed from on molecule of beta carotene. Oxidation: If you compare the two molecules, it is clear that vitamin A (retinol) is very closely related to half of the beta-carotene molecule.
What is the richest source of vitamin A?
Concentrations of preformed vitamin A are highest in liver, fish, eggs, and dairy products [1]. Most dietary provitamin A in the U.S. diet comes from leafy green vegetables, orange and yellow vegetables, tomato products, fruits, and some vegetable oils [1,5,10].
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