vitamin e (α-tocopherol) is a natural antioxidant very useful for preventing the harmful effects of uv sun rays as skin aging and cancers. in this study, different mlv formulations were made using egg lecithin and varying molar ratios of α-tocopherol and/or cholesterol, and their encapsulation efficiencies were determined. the best liposomal product was incorporated into a carbomer 980 gel. the...

α-tocopherol is a vitamin E isoform with potent antioxidant activity, while the γ-tocopherol of exerts more pro-inflammatory effects. In maternal–fetal environments, increased plasma concentrations are associated positive birth outcomes, higher linked negative pregnancy outcomes. However, little known about tocopherol in placental tissue and their role modulating oxidative stress, process that ...

Determination of individual vitamin E components, such as D-αtocopherol, DL-α-tocopherol, and their esters, in food ingredients such as pre-blends, pre-mixes, and pure materials, including encapsulated and oil forms. Other compounds of accepted vitamin E activity may be measured by a method if the compounds and accuracy of measure can be ascertained. Methods should be capable of reporting α-toc...

We previously found that 2,7,8-trimethyl-2(2'-carboxyethyl)-6-hydroxychroman (γCEHC), a metabolite of the vitamin E isoforms γ-tocopherol or γ-tocotrienol, accumulated in the rat small intestine. The aim of this study was to evaluate tissue distribution of vitamin E metabolites. A single dose of α-tocopherol, γ-tocopherol or a tocotrienol mixture containing α- and γ-tocotrienol was orally admin...

Vitamin E (α-tocopherol) is a natural antioxidant very useful for preventing the harmful effects of UV sun rays as skin aging and cancers. In this study, different MLV formulations were made using egg lecithin and varying molar ratios of α-tocopherol and/or cholesterol, and their encapsulation efficiencies were determined. The best liposomal product was incorporated into a carbomer 980 gel. The...

date is one of the world’s oldest food-producing plants wich has always played an important role in the economy and social life. various researchers examined chemical composition and nutritional values of edible parts of dates while limited information about chemical composition and nutritional quality of date seed is available. in this study, fatty acid composition and total tocopherol content...

PURPOSE To verify the effect of consumption of grape extract isolated or combined with α-tocopherol supplementation on atherosclerosis model with Apo E -/- mice. METHODS After six weeks of atherogenic diet, Apo E -/- mice were divided into the following groups: Control, Grape, Tocopherol and Grape plus Tocopherol. The treatment progressed for 11 weeks when animals were submitted to euthanasia...

This study aimed to investigate whether α-tocopherol is able to protect keratinocytes against ultraviolet A (UVA) radiation by increasing glutathione (γ-glutamylcysteinylglycine; GSH) levels or decreasing lipid peroxidation and reactive oxygen species (ROS) generation. The cell survival fraction was 43.6% when keratinocytes were irradiated with UVA at a dose of 8 J/cm2. α-Tocopherol was added p...