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Related to tocopherol: vitamin E


 (tō-kŏf′ə-rôl′, -rōl′)
Any of a group of closely related fat-soluble alcohols that are forms of vitamin E and that differ from the tocotrienols in having saturated side chains.

[Greek tokos, offspring, childbirth; see tek- in Indo-European roots + Greek pherein, to bear, carry; see bher- in Indo-European roots + -ol (tocopherols being so called because they were discovered after it was observed that rats did not reproduce when fed a diet lacking these compounds).]


(Biochemistry) biochem any of a group of fat-soluble alcohols that occur in wheat-germ oil, watercress, lettuce, egg yolk, etc. They are thought to be necessary for healthy human reproduction. Also called: vitamin E
[C20: from toco-, from Greek tokos offspring (see tocology) + -pher-, from pherein to bear + -ol1]


(toʊˈkɒf əˌrɔl, -ˌrɒl)

any of several oils that constitute vitamin E.
[1936; < Greek tóko(s) child, childbirth + phér(ein) to carry, bear1 + -ol1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tocopherol - a fat-soluble vitamin that is essential for normal reproductiontocopherol - a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
alpha-tocopheral - a potent form of vitamin E obtained from germ oils or by synthesis
antioxidant - substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides
fat-soluble vitamin - any vitamin that is soluble in fats


n tocoferol m
References in periodicals archive ?
Tocopherol analysis was performed with isocratic HPLC using a C-18 diol column as described by Thies (1997).
Now while there are still benefits of vitamin E tocopherol, when it comes to cardiovascular health, vitamin E tocotrienols are showing greater efficacy and positive results.
Although a majority of these studies were poorly designed and misinterpreted, the greater drawback is that consumers were largely left unaware of the remaining three tocopherols (beta-, gamma- and delta-tocopherol) and the tocotrienol subfamily of vitamin E (alpha-, beta-, gamma- and delta-tocotrienol).
The availability of ascorbate may also influence the effects of added [alpha]-tocopherol on lipid oxidation because ascorbate regenerates the reduced tocopherol, thereby removing potentially damaging [alpha]-TO' radicals (24,32).
Unique among the plant kingdom, annatto produces only tocotrienols, whereas all other known sources of this vitamin E nutrient, such as palm and rice, deliver mixtures of tocopherols and tocotrienols, typically containing anywhere from 25-50% alpha-tocopherol.
The team randomly analysed participants into two groups, one that received gamma tocopherol supplement and other that received a placebo for two weeks.
According to a standard assay (the rat fetal resorption assay), alpha-tocopherol has the highest biological activity of the four tocopherols, and it is the only form of vitamin E that is officially recognized as being capable of meeting human requirements.
Available in the diet through fresh vegetables (particularly green leafy vegetables), vegetable oils, grains, nuts, seeds, corn, soy, whole wheat flour, margarine, and some meat and dairy products, vitamin E, or tocopherol, is the primary lipid-soluble antioxidant found in human skin (via sebum), membranes, plasma, and tissues that protects cells from oxidative stress.
In each month, the concentrations of retinol acetate, alpha tocopherol, delta tocopherol, alpha tocopherol acetate and vitamin D3 in seminal plasma were analyzed by using HPLC.
The hexane phase, which contained the tocopherol fraction, was collected and evaporated using evaporator en route under vacuum at 50[degrees]C and the residue was dissolved in methanol.
The researchers found that plasma tocopherol and tocotrienol levels, in combination with automated MRI measurements can accurately help to differentiate MCI from AD patients, and to prospectively predict MCI conversion into AD.