A vitamin is an organic molecule (or a set of molecules closely partnered chemically, i.e. vitamers) that is an essential micronutrient which an organism needs in small quantities for the proper practicing of its metabolism. indispensable nutrients cannot be synthesized in the organism, either at every or not in plenty quantities, and appropriately must be obtained through the diet. Vitamin C can be synthesized by some species but not by others; it is not a vitamin in the first instance but is in the second. The term vitamin does not add together the three other groups of valuable nutrients: minerals, critical fatty acids, and indispensable amino acids. Most vitamins are not single molecules, but groups of joined molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols. Some sources list fourteen vitamins, by including choline, but major health organizations list thirteen: vitamin A (as all-trans-retinol, all-trans-retinyl-esters, as with ease as all-trans-beta-carotene and extra provitamin A carotenoids), vitamin B1 (thiamine), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6 (pyridoxine), vitamin B7 (biotin), vitamin B9 (folic sharp or folate), vitamin B12 (cobalamins), vitamin C (ascorbic acid), vitamin D (calciferols), vitamin E (tocopherols and tocotrienols), and vitamin K (phylloquinone and menaquinones).
Vitamins have diverse biochemical functions. Vitamin A acts as a regulator of cell and tissue bump and differentiation. Vitamin D provides a hormone-like function, bendable mineral metabolism for bones and further organs. The B mysterious vitamins feint as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E action as antioxidants. Both deficient and excess intake of a vitamin can potentially cause clinically significant illness, although excess intake of water-soluble vitamins is less likely to realize so.
Before 1935, the abandoned source of vitamins was from food. If intake of vitamins was lacking, the result was vitamin nonattendance and consequent nonattendance diseases. Then, commercially produced tablets of yeast-extract vitamin B puzzling and semi-synthetic vitamin C became available.
This was followed in the 1950s by the buildup production and marketing of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population. Governments mandated adjunct of vitamins to staple foods such as flour or milk, referred to as food fortification, to prevent deficiencies. Recommendations for folic barbed supplementation during pregnancy edited risk of infant neural tube defects.
The term vitamin is derived from the word vitamine, which was coined in 1912 by Polish biochemist Casimir Funk, who and no-one else a complex of micronutrients indispensable to life, every of which he presumed to be amines. once this presumption was well ahead clear not to be true, the "e" was dropped from the name. every vitamins were discovered (identified) between 1913 and 1948.
Foods with More Vitamin C than an Orange - MeowMeix
The Lovely Vitamins We Live With - Food N Health
The Lovely Vitamins We Live With - Food N Health
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