α-tocopherol

α-tocopherol
5,7,8-Trimethyltocol; a light yellow, viscous, odorless, oily liquid that deteriorates on exposure to light, is obtained from wheat germ oil or by synthesis, biologically exhibits the most vitamin E activity of the α-tocopherols, and is an antioxidant retarding rancidity by interfering with the autoxidation of fats. Prepared from natural phytol, it is called 2-ambo-α-tocopherol; from synthetic phytol, all-rac-α-tocopherol or synt-α-tocopherol; also available are d-α-tocopheryl acetate, dl-α-tocopheryl acetate, d-α-tocopheryl acid succinate, and d-α-tocopheryl acetate concentrate. One of several forms of vitamin E. SYN: vitamin E (1).

Medical dictionary. 2011.

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  • tocophérol — [ tɔkɔferɔl ] n. m. • 1948; de toco et gr. pherein « transporter » ♦ Biochim. Alcool organique entrant dans la composition de la vitamine E (de fertilité). ● tocophérol ou tocoférol nom masculin Substance ayant une activité vitaminique E.… …   Encyclopédie Universelle

  • Tocopherol — Tocopherol, Vitamin E, zu den fettlöslichen Vitaminen gehörende Gruppe chemisch verwandter Stoffe – aufgebaut aus einem Chromanring mit isoprenoider Seitenkette – deren wichtigster Vertreter, α Tocopherol, in Getreidekeimlingen besonders… …   Deutsch wörterbuch der biologie

  • tocopherol — ► NOUN ▪ vitamin E, a compound found in wheatgerm oil, egg yolk, and leafy vegetables and important in stabilizing cell membranes. ORIGIN from Greek tokos offspring + pherein to bear …   English terms dictionary

  • tocopherol — [tō käf′ər ôl, tō käf′ərōl΄] n. [< Gr tokos (see TOCOLOGY) + pherein, to BEAR1 + OL1] any of a group of four closely related viscous oils that constitute vitamin E and occur chiefly in wheat germ oil, cottonseed oil, lettuce, etc …   English World dictionary

  • Tocopherol — Tocopherols (or TCP) are a class of chemical compounds of which many have vitamin E activity. It is a series of organic compounds consisting of various methylated phenols. Because the vitamin activity was first identified in 1936 from a dietary… …   Wikipedia

  • Tocopherol — Strukturformel (RRR) Isomer von Tocopherol Allgemeines …   Deutsch Wikipedia

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  • Tocopherol O-methyltransferase — In enzymology, a tocopherol O methyltransferase (EC number|2.1.1.95) is an enzyme that catalyzes the chemical reaction:S adenosyl L methionine + gamma tocopherol ightleftharpoons S adenosyl L homocysteine + alpha tocopherolThus, the two… …   Wikipedia

  • tocopherol — noun Etymology: International Scientific Vocabulary, ultimately from Greek tokos childbirth, offspring (akin to Greek tiktein to beget) + pherein to carry, bear more at thane, bear Date: circa 1936 any of several fat soluble oily phenolic… …   New Collegiate Dictionary

  • tocopherol — (= a tocopherol; vitamin E) Protects unsaturated membrane lipids from oxidation and may prevent free radical damage …   Dictionary of molecular biology

  • tocopherol — 1. Name given to vitamin E by its discoverer, but now a generic term for vitamin E and compounds chemically related to it, with or without biological activity; similar in chemical structure and properties to vitamins K and coenzyme Q. 2. A… …   Medical dictionary

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