alpha-tocopherol

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α-to·coph·er·ol (α-T),

(tō-kof'ĕr-ol),
One of several forms of vitamin E. 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.
Synonym(s): vitamin E (1)

alpha-tocopherol

(ăl′fə-tō-kŏf′ə-rôl′, -rōl′)
n.
An alcohol, C29H50O2, that is one of the components of vitamin E and is present in vegetable oils, nuts, and seeds or produced synthetically. It is the predominant form of vitamin E in the human body and in supplements.

α-to·coph·er·ol

(tŏ-kof'ĕr-ol)
One of several forms of vitamin E. A light yellow, viscous, odorless, oily liquid that deteriorates on exposure to light, is obtained from wheat germ oil or by synthesis; an antioxidant retarding rancidity by interfering with autoxidation of fats.
Synonym(s): vitamin E (1) .
References in periodicals archive ?
As the literature supported the protective role of a-tocopherol, we employed it against CYP-induced ovarian toxicity in group C to imitate moderate ovarian damage.11 Aiming to exploit the potential impact of acute ovarian damage on follicular dynamics and serum AMH production, we were able to study three levels of OR; normal (group A and D), moderately decreased (group C) and severely decreased (group B).
[8] compared a-tocopherol levels with antiretroviral classes and showed a decrease of this vitamin in nearly 20% of PLWHA [8].
pseudo-cajan proved excellent antioxidants as compared with BHT whereas the stem extracts showed their closeness with the a-Tocopherol (Fig.
(2015) which reports 11.61 [+ or -] 0.08 (mg 100g-1) tocopherols, the most significant being the a-tocopherol and 11.40 [+ or -] 0.40 (pg 100g-1) of carotenoids in this oil.
a-and d-tocopherol induce expression of hepatic a-tocopherol transfer-protein mRNA.
VITAMIN E FOOD SOURCES SERVING VITAMIN E (MG) (*) Wheat Germ Oil 1 T 20.3 Almonds 1/2 c 16.5 Sunflower Seeds 1/4 c 12.3 Sunflower Oil 1 T 5.8 Tomato Puree 1 c 4.9 Spinach (chopped, cooked) 1/2 c 3.4 Butternut Squash (cubed) 1 c 2.6 Canola Oil 1 T 2.4 Broccoli (cooked) 1 c 2.4 Canned Tuna 3 oz 2.0 Olive Oil 1 T 1.9 Shrimp (cooked) 3 oz 1.9 Mango (sliced) 1 c 1.5 Asparagus 1/2 c 1.4 Avocado 1/2 fruit 1.3 (*) Since only a-tocopherol is measurable in human blood, intake recommendations are based on o-tocopherol.
The concentration of a-tocopherol in the blood plasma of patients of the second group was significantly higher (19.7 [+ or -] 1.10 mkmol/L and 15.6 [+ or -] 0.71 mkmol/L respectively, p<0.01) compared to the control group.
In the European Union, adult recommendations previously ranged from 4 to 25 mg a-tocopherol equivalents (a-TE)/day for men and from 3 to 12 mg a-TE/day for women.
To test for specificity of LBE-induced ROS formation, the HT-29 cells were co-treated with LBE and one of the following anti-oxidants, N-acetyl cysteine, glutathione, a-Tocopherol or ascorbic acid, with results demonstrating significant reduction in ROS formation.
The entrapment efficiencies of a-tocopherol in the polymeric matrix were approximately 89% and 95% for nanoparticles with an 8% and 16% [alpha]-tocopherol theoretical loading, respectively.
In recent studies on rats subjected to 24-h UUO followed by 2 h post-release period, it was observed that a-tocopherol as the most potent lipidsoluble antioxidant could prevent oxidative stress in the POK.
The results obtained with a-tocopherol in the similar series of tests are also specified.