The present study assessed the chemical composition (such fatty acids, triglycerides, tocopherols) of argan oil from plants growing in two regions of Algeria (Tindouf and Mostaganem). The extraction of oil was carried out by solvent using soxhlet apparatus. The oil yield obtained was 55.9 % for Tindouf oil (TO) and 66.5 % for Mostaganem oil (MO). The fatty acid composition was determined by GC-...

Numerous specific age-related morbidities have been correlated with low intake and serum levels of tocopherols and tocotrienols. We performed a review in order to evaluate the extant evidence regarding: (1) the association between intake and serum levels of tocopherols and tocotrienols and age-related pathologies (osteoporosis, sarcopenia and cognitive impairment); and (2) the optimum diet ther...

Antioxidants, particularly carotenoids and tocopherols, may protect against cardiovascular disease. The objective of this study was to determine whether dietary and adipose tissue carotenoids and tocopherols are associated with the risk of myocardial infarction (MI). Cases (n = 1456) of a first acute MI were identified and matched by age, sex, and residence to randomly selected population contr...

Background: Vitamin E isomers may protect against atherosclerosis. The aim of this study was to compare the effects of supplementation with either -tocopherol ( T) or mixed tocopherols rich in -tocopherol ( T) on markers of oxidative stress and inflammation in patients with type 2 diabetes. Methods: In a double-blind, placebo-controlled trial, 55 patients with type 2 diabetes were randomly assi...

—All vertebrates must contend with an increase in oxidative stress during intense exercise. Birds, in particular, may be exposed to increased oxidative stress during long-distance migration, and dietary antioxidants are likely important in alleviating the deleterious effects associated with such a stressor. We evaluated whether fruit selection by birds at a migratory stopover site in southern N...

The aim of this study was to characterize the pathways of basolateral secretion of common dietary tocopherols from polarized Caco-2 monolayers, a model of intestinal absorption. Given differences in structure and physical properties, we hypothesized that secretion may differ between different forms of vitamin E, thus potentially contribute to the selectivity seen in vivo. Monolayers were incuba...

This study evaluated how prostatic levels of antioxidants relate to plasma levels and self-reported usual dietary intake. Definition of these relations may aid in interpreting studies of antioxidant exposure and prostate cancer risk. Between July 1996 and April 1997, plasma and prostatic tissue levels of tocopherols, carotenoids, and retinol were measured in 47 men undergoing radical prostatect...

The method described in the present work allows the purity of the solution under test for tocopherols to be assessed and also enables the separation of the commonly occurring a-, yand 8-tocopherols to be achieved. Applications of the method to the examination of several oils indicate the usefulness of the method. For example, the presence of 8tocopherol in soya-bean oil is readily ascertained, ...

This study was conducted to investigate and compare the fatty acids and tocopherols of lipid extracted from marine microalgae, Nannochloropsis oculata (NO) and Tetraselmis suecica (TS) using solvent extraction and supercritical fluid extraction (SFE). Fatty acids and tocopherols were determined in the extracted lipid as functions of the temperature (40, 80oC) and pressure (3000, 5000, 7000, 900...