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Showing 1 to 20 of 36 for “"alpha-tocopherol"”.
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Natural versus synthetic alpha-tocopherol using cell and animal models
Vitamin E (α-tocopherol, α-T) is one of nature’s famous lipid-soluble chain-breaking antioxidants. Although originally discovered in the 1920s as an essential rodent fertility factor, decades of research also demonstrate α-T’s essentiality in the lipid-rich, oxidative-stress-prone environment of …
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Quantitative analysis for D, [alpha]-tocopherol (Vitamin E) in porcine muscle
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Food Science and Human Nutrition, 1971
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The impact of alpha-tocopherol status on brain polyunsaturated fatty acid composition and oxidative stress
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Effects of Alpha-Tocopherol Antioxidant on the Bonding Properties of Resin Adhesive to Dentin Bleached with Sodium Perborate
… levels can be obtained with application of 10% alpha-tocopherol in a 2-hour time frame, or by delaying bonding for two weeks. This study evaluated the effectiveness of a 5-minute application of 20% alpha-tocopherol to reverse the deleterious effect of nonvital bleaching on dentin bonding. Thirty …
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Comparison of Chlorophyll, Carotenoid, and Alpha-tocopherol in E-beam, Gamma, and X-ray Treated 'Granny Smith' Apples
… and quantified for chlorophyll, carotenoids, alpha-tocopherol, and antioxidant capacity. The results indicated that gamma irradiation significantly reduced the chlorophyll content by 76% but did not impact X-ray and e-beam-treated apple peels, even though the dose delivered for the latter two …
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Effect of Alpha-Tocopherol and Some Flavonoid Compounds on Inactivation of Peroxidase (Purified and Unpurified) of Selected Vegetables
The effect of natural antioxidants (alpha-tocopherol, quercetin, rutinic acid and chlorogenic acid) at four different concentrations (125, 250, 500 and 1000 mg%) on peroxidase activity of tomato, eggplant and carrot was determined. All antioxidants caused reduction in peroxidase activity of crude …
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Effect of Alpha-Tocopherol on Essential Fatty Acid Metabolism in Liver Mitochondria Obtained From Chicks Suffering From Encephalomalacia
Made available in DSpace on 2014-12-05T19:06:51Z (GMT). No. of bitstreams: 1 6206179.pdf: 2646256 bytes, checksum: 04b4d285b9ba5bb084dc02570db12eb9 (MD5) Previous issue date: 1962
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Effects of vitamin E supplementation on renal tissue vitamin E concentration in male rats
Alpha-tocopherol is a well known antioxidant present in foods. This vitamin has been studied in the past in the prevention and treatment of neoplasms in human and in animals, however, the effects of supplementation on the lipids of the tissues has yet to be discovered. The purpose of this study was …
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Avaliação da suplementação de vitamina E sobre a concentração de alfa-tocoferol no leite materno em mulheres com partos prematuros
… in structure and bioavailability, and the RRR-alpha-tocopherol more biologically active form. The composition of vitamin E in breast milk undergoes variations during lactation, colostrum and milk richer in this micronutrient compared to transitional and mature milk. Newborns, especially …
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Controlled Release of Natural Antioxidants from Polymer Food Packaging by Molecular Encapsulation with Cyclodextrins
… complexes with the natural antioxidants, alpha-tocopherol and quercetin, (2) incorporate cyclodextrin inclusion complexes of natural antioxidants into linear low density polyethylene (LLDPE), and (3) measure the release kinetics of inclusion complexes of natural antioxidants from LLDPE …
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Antioxidant Nanoparticles as Delivery Systems
… applications. Natural antioxidants like alpha-tocopherol, vitamin C, and carnosine, are responsible to protect biological systems against free radicals attack. The conjugation of vitamin C-vitamin E (EC) and alpha-tocopherol-carnosine (VECAR) were performed to obtain antioxidant …
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Roles of dietary antioxidants and oxidative stress in mediating fitness related traits in birds
… undulatus. Supplementing blue tit parents with [alpha]-tocopherol, a potent dietary antioxidant, before and during egg laying did not affect maternal condition, nor reproductive performance. Mothers supplemented with [alpha]-tocopherol produced significantly more daughters than control mothers. I …
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Vitamin E and arachidonic acid metabolism in cultured human endothelial cells.
… depletion of 2R,4$\sp\prime$R,8$\sp\prime$R-$\alpha$-tocopherol (RRR-$\alpha$-T), a natural form of vitamin E, and its subsequent effect on the metabolism of arachidonic acid were conducted on human umbilical vein endothelial cells (HUVECs) in culture. HUVECs incorporated physiological and …
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Vitamin E : elucidation of the mechanism of side chain degradation and gene regulatory functions
… evidenced by the inhibition of the metabolism of alpha-tocopherol by ketoconozole, an inhibitor of CYP3A expression, whereas rifampicin, an inducer of CYP3A expression increased the metabolism of alpha-tocopherol. Although the degradation pathway is identical for all tocopherols and tocotrienols, …
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Tocopherol (vitamin E) content in invasive browse species on underutilized Appalachian farmland
The tocopherol (Vitamin E) content of forage from three invasive shrub species was measured to assess the value of the shrubs as a source of vitamin E for goats browsing on overgrown Appalachian pastures. Plant leaf clusters were collected from multiflora rose (Rosa multiflora Thunb.), autumn olive …
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Genetic Analysis of Variation for Carotenoids and Tocopherols in Maize
Carotenoids and tocopherols are two classes of compounds present in maize (Zea mays L.) which may add value to the grain. Both the carotenoids and tocopherols are fat soluble antioxidant vitamins. The vitamin and antioxidant properties of the carotenoids and tocopherols provide health and economic …
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Isolierung und Charakterisierung der gamma-Tocopherolmeth yltransferase
Bei den Tocopherolen und Tocotrienolen handelt es sich um niedermolekulare Antioxidantien, die in der Lage sind, Singulett-Sauerstoff direkt aus der Membranumgebung zu entfernen, indem sie als Radikalfänger fungieren. In der Medizin wird Vitamin E gegen Krankheiten wie Krebs und Alzheimer …
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Nutrient Utilization in Pigs and Chicks Treated With Lipopolysaccharide: Lysine, Threonine, Arginine, Sulfur Amino Acids and Vitamin E
… levels of the cytokines tumor necrosis factor-$\alpha$ (TNF-$\alpha$ and interleukin-6 (IL-6), and the catabolic hormone cortisol. The increased secretion of cortisol in pigs injected with LPS was followed by an increase in protein degradation, as evidenced by plasma urea nitrogen values that …
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Influence of Plant Growth Regulators on Turfgrass Growth, Antioxidant Status, and Drought Tolerance
… stress induced an increase of antioxidants alpha-tocopherol and ascorbic acid concentrations in the three turfgrass species. In the experiment with Kentucky bluegrass, drought stress increased beta-carotene concentration, but did not significantly influence superoxide dismutase (SOD) …
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Evaluation of By-product Feedstuffs, Level of Concentrate, and Selenium and Vitamin E Injections on Performance and Health of Beef Calves in Backgrounding Systems
… steers grazing fescue pastures had higher serum alpha-tocopherol concentrations than steers grazing fescue + alfalfa pastures. There were no differences in serum alpha-tocopherol concentrations due to injection treatment on any day. No consistent differences were detected in forage and blood …
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