Hvad er det kemiske navn på vitamin e?
γ-tocopherol
Vitamin E
E-vitamin henviser til en gruppe forbindelser, der omfatter både tocopheroler og tocotrienoler. Af de mange forskellige former for E-vitamin er γ-tocopherol den mest almindelige form, der findes i den nordamerikanske kost. γ-tocopherol findes i majsolie, sojaolie, margarine og dressinger. α-tocopherol, den biologisk mest aktive form af E-vitamin, er den næstmest almindelige form af E-vitamin i kosten. Denne variant findes hyppigst i hvedekimolie, solsikkeolie og saflorolie. Som fedtopløselig antioxidant afbryder det udbredelsen af reaktive iltarter, der spredes gennem biologiske membraner eller gennem et fedtstof, når dets lipidindhold undergår oxidation, ved at reagere med mere reaktive lipidradikaler for at danne mere stabile produkter. Regelmæssig indtagelse af mere end 1.000 mg (1.500 IE) tocopheroler pr. dag kan forventes at forårsage hypervitaminose E med en tilknyttet risiko for vitamin K-mangel og dermed for blødningsproblemer.
γ-tocopherol
Vitamin E refers to a group of compounds that include both tocopherols and tocotrienols. Of the many different forms of vitamin E, γ-tocopherol is the most common form found in the North American diet. γ-Tocopherol can be found in corn oil, soybean oil, margarine, and dressings. α-tocopherol, the most biologically active form of vitamin E, is the second-most common form of vitamin E in the diet. This variant can be found most abundantly in wheat germ oil, sunflower, and safflower oils. As a fat-soluble antioxidant, it interrupts the propagation of reactive oxygen species that spread through biological membranes or through a fat when its lipid content undergoes oxidation by reacting with more-reactive lipid radicals to form more stable products. Regular consumption of more than 1,000 mg (1,500 IU) of tocopherols per day may be expected to cause hypervitaminosis E, with an associated risk of vitamin K deficiency and consequently of bleeding problems.
Vitamin E