![VITAMIN D[ SUNSHINE VITAMIN] MEDICINAL CHEMISTRY BY P. RAVISANKAR, CH…](https://image.slidesharecdn.com/02fat-solublevitamins-130615192714-phpapp02/95/vitamin-d-sunshine-vitamin-medicinal-chemistry-by-p-ravisankar-chemistry-of-vitamin-d-structures-of-vitamin-d1d2d3d4d5-vitmin-d-sourcesrecommended-dietary-allowancevitamin-d-deficiancy-occurs-in-mechanism-of-actionvitamin-d-functionsvitamin-1-638.jpg?cb=1371324664 "VITAMIN D[ SUNSHINE VITAMIN] MEDICINAL CHEMISTRY BY P. RAVISANKAR, CH…")
A vitamin is an organic molecule (or a set of molecules to the side of amalgamated chemically, i.e. vitamers) that is an essential micronutrient which an organism needs in small quantities for the proper energetic of its metabolism. critical nutrients cannot be synthesized in the organism, either at all or not in ample quantities, and therefore 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 enhance the three extra groups of essential nutrients: minerals, vital fatty acids, and critical amino acids. Most vitamins are not single molecules, but groups of aligned 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 skillfully 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 cutting 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 increase and differentiation. Vitamin D provides a hormone-like function, amendable mineral metabolism for bones and supplementary organs. The B puzzling vitamins proceed as enzyme cofactors (coenzymes) or the precursors for them. Vitamins C and E law 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 do so.
Before 1935, the isolated source of vitamins was from food. If intake of vitamins was lacking, the repercussion was vitamin dearth and consequent nonappearance diseases. Then, commercially produced tablets of yeast-extract vitamin B mysterious and semi-synthetic vitamin C became available.
This was followed in the 1950s by the mass production and publicity of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population. Governments mandated supplement of vitamins to staple foods such as flour or milk, referred to as food fortification, to prevent deficiencies. Recommendations for folic sour supplementation during pregnancy abbreviated 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 single-handedly a rarefied of micronutrients vital to life, all of which he presumed to be amines. when this presumption was well ahead definite not to be true, the "e" was dropped from the name. every vitamins were discovered (identified) between 1913 and 1948.
Benefits of Vitamin D4 LIVESTRONG.COM
Vitamin D complex Forms of Vitamin D vitamin D1, Vitamin D2, Vitamin D3, Vitamin D4
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