Received 9 Mar., 2014 Accepted 15 Apr., 2014 (006316) 1 Department of Biochemistry, BioScience Center, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil, e-mail: [email protected] *Corresponding author Alpha-tocopherol and gamma-tocopherol concentration in vegetable oils Evellyn Câmara GRILO1*, Priscila Nunes COSTA1, Cristiane Santos Sânzio GURGEL1, Andressa Fernanda de L...

Formation of chloroplast pigments was inhibited, and free fatty acids accumulated in mustard (Brassica juncea [L.] Coss.) cotyledons and in barley (Hordeum vulgare L.) first leaves developed after treatment with 4-chloro-5- (dimethylamino)-2- (alpha, alpha, alpha-trifluoro-m-tolyl) -3 (2H) -pyridazinone. The inhibitor reduced the amount of fatty acids found in polar lipids (galactolipids) of ba...

A study was conducted to evaluate the effects of high dietary vitamin A on vitamin E status and performance of growing-finishing pigs fed diets supplemented with varying levels of vitamin E. Treatments consisted of corn-soybean meal-based diets supplemented with retinyl acetate to provide 2,000 or 20,000 IU of vitamin A/kg of diet and with DL-alpha-tocopheryl acetate to provide 0, 15, or 150 IU...

Vitamin E absorption requires the presence of fat; however, limited information exists on the influence of fat quantity on optimal absorption. In the present study we compared the absorption of stable-isotope-labelled vitamin E following meals of varying fat content and source. In a randomised four-way cross-over study, eight healthy individuals consumed a capsule containing 150 mg (2)H-labelle...

A simplified method for the determination of alpha-tocopherol concentration in beef muscle was developed and evaluated. The method consists of a saponification step applied to 1-g samples of intact, fresh muscle, followed by a single isooctane extraction of the saponified samples. alpha-Tocopherol in the extract was separated by normal phase chromatography and quantified by fluorescence detecti...

The multiplicity reactivation of T4D phage irradiated with UV was inhibited by treatment of infected cells with 0.5 mM hydroquinone (HQ). HQ also inhibited genetic recombination of T4B rII mutants. The recombination frequency was reduced by treatment of infected cells with HQ in a buffer when compared with an untreated control. In addition to HQ, the effects of quinone, an oxide form of HQ, mer...

Plasma vitamin E values of newborn infants in a Coloured population of Cape Town have been determined. The mean plasma alpha-tocopherol value was 3,2 +/- 0,8 mg/l. A significant correlation between the plasma alpha-tocopherol level and plasma total lipid content (r = 0,45; P less than 0,001) and plasma cholesterol level (r = 0,65; P less than 0,001) has been found. However, maternal and neonata...