Provitamin

Provitamins are substances that are not vitamins themselves, but can be converted into them in the human body. Provitamins are precursors to vitamins because they cannot independently provide the body with the necessary nutrients. However, under certain conditions, these substances can be converted into vitamins and provide the body with the need for them.

One example of a provitamin is carotene. Carotene is a plant pigment found in carrots, pumpkin, apricots and other vegetables and fruits. In the human body, carotene can be converted into vitamin A, which is essential for healthy eyes, skin and the immune system.

Another example of a provitamin is vitamin D. Vitamin D is produced in human skin when exposed to sunlight. Without enough sunlight, the body cannot produce vitamin D on its own, so people need to get it from food.

Provitamins play an important role in maintaining human health. They provide the body with essential nutrients and help prevent various diseases. However, in order for provitamins to be converted into vitamins, there must be sufficient sunlight or other sources of vitamin D.

Provitamins and vitamins

Provitamins are precursors of vitamins and perform the same function in the body. Provitamins can be: * provitamin D-2 (ergocalciferol), * beta-cryptoxanthin (precursor of vitamin A - provitamin form of carotene), * oxidized vitamin B1 (much more active against pyridoxal phosphate, which is probably explained by the formation of a covalent bond between them), * “scattered” riboflavins, * biotriodine (provitamin of vitamin B3 - nicotinic acid) * tocopherols - first alpha (all vitamins are antioxidants in the embryonic period), and then beta.

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