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Of the different forms of vitamin E, gamma-tocopherol (γ-tocopherol) is the most common form found in the North American diet, but alpha-tocopherol (α-tocopherol) is the most biologically active. [3] [53] The U.S. Department of Agriculture (USDA), Agricultural Research Services, maintains a food composition database.
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 ...
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. Subsequent research identified eight molecules in the vitamin E family, divided into tocopherols and tocotrienols: alpha, beta, delta, and gamma forms. [18]
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 ...
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In some cases, vitamin supplements may have unwanted effects, especially if taken before surgery, with other dietary supplements or medicines, or if the person taking them has certain health conditions. [73] They may also contain levels of vitamins many times higher, and in different forms, than one may ingest through food.
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.
This lightweight formula actually uses three different forms of vitamin C, but is still surprisingly gentle on sensitive-skin testers (likely due to the moisturizing hyaluronic acid and vitamin E ...
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