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Vitamin E may have various roles as a vitamin. [1] Many biological functions have been postulated, including a role as a lipid-soluble antioxidant. [1] In this role, vitamin E acts as a radical scavenger, delivering a hydrogen (H) atom to free radicals. At 323 kJ/mol, the O-H bond in tocopherols is about 10% weaker than in most other phenols. [23]
α-Tocopherol (alpha-tocopherol) is a type of vitamin E.Its E number is "E307". Vitamin E exists in eight different forms, four tocopherols and four tocotrienols.All feature a chromane ring, with a hydroxyl group that can donate a hydrogen atom to reduce free radicals and a hydrophobic side chain, along with an aromatic ring is situated near the carbonyls in the fatty acyl chains of the ...
Tocopherols (/ t oʊ ˈ k ɒ f ə ˌ r ɒ l /; [1] TCP) are a class of organic compounds comprising various methylated phenols, many of which have vitamin E activity. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was named tocopherol, from Greek τόκος tókos 'birth' and φέρειν phérein 'to bear or carry', that is 'to carry a ...
For those looking to take a vitamin E supplement or ensure they are reaching the correct amount, Dr. Luke notes that the recommended daily amount of vitamin E is 15 mg/day of α-tocopherol.
Additionally, vitamin D plays a role in muscle repair and contraction, she says. It also helps reduce inflammation and keeps your immune system working properly so your body can fight off infections.
For example, vitamin C can be synthesized by some species but not by others; it is not considered a vitamin in the first instance but is in the second. Most vitamins are not single molecules, but groups of related molecules called vitamers. For example, there are eight vitamers of vitamin E: four tocopherols and four tocotrienols.
“Vitamin A plays a role in the production of rhodopsin, a pigment in your retina that’s needed for low-light and night vision,” says London. Carrots also provide nutrients that contribute to ...
The discovery of vitamin E by scientists Katherine Bishop and Herbert Evans in 1922 marked the beginning of the understanding of tocotrienols. [17] Vitamin E was named "tocopherol" (from the Greek words tokos, meaning childbirth, and phero, meaning to bring forth) due to its presumed role in aiding conception.
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