英语词汇“tocopherol”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	tocopherol
释义	to·coph·er·ol \təˈkäfəˌrȯl, -rōl\ noun (-s) Etymology: International Scientific Vocabulary toco- + -pher + -ol : any of several pale yellow fat-soluble oily liquid phenolic compounds that are derived from chroman and differ in the number and locations of methyl groups in the benzene ring, that have antioxidant properties and vitamin E activity in varying degrees, that are found in the dextrorotatory form especially in oils from seeds (as wheat-germ oil and cottonseed oil), in leaves, and in fish-liver oils, that are made synthetically in the racemic form, and that are used in a mixture chiefly as antioxidants (as for stabilizing vitamin A in fats and oils) and in nutrition and veterinary medicine: as a. : the compound C₂₉H₅₀O₂ obtained usually from germ oils or by synthesis (as from trimethyl-hydroquinone and phytyl bromide) and often used in the form of its acetate or other esters — called also alpha-tocopherol, vitamin E b. : a compound C₂₈H₄₈O₂ occurring usually with alpha-tocopherol and gamma-tocopherol — called also beta-tocopherol c. : a compound C₂₈H₄₈O₂ isomeric with beta-tocopherol and occurring with it and alpha-tocopherol and predominating in corn oil and with delta-tocopherol in soybean oil — called also gamma-tocopherol d. : a compound C₂₇H₄₆O₂ said to have the highest antioxidant activity of the tocopherols and found with the others but especially in soybean oil — called also delta-tocopherol
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