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A European carotenoid database to assess carotenoid intakes and its use in a five-country comparative study
A food frequency questionnaire (FFQ) and carotenoid database with information on α- and β-carotene, lutein, lycopene and β-cryptoxanthin was prepared and used to compare the carotenoid intakes inExpand
Serum concentrations of carotenoids and vitamins A, E, and C in control subjects from five European countries.
High intakes of fruits and vegetables, or high circulating levels of their biomarkers (carotenoids, vitamins C and E), have been associated with a relatively low incidence of cardiovascular disease,Expand
Reference values for retinol, tocopherol, and main carotenoids in serum of control and insulin-dependent diabetic Spanish subjects.
To establish reference ranges for use in clinical and epidemiological studies, we determined concentrations of retinol, alpha-tocopherol, beta-carotene, alpha-carotene, beta-cryptoxanthin, lutein,Expand
Carotenoid composition in raw and cooked Spanish vegetables
An HPLC study of 18 of the fresh vegetables (raw and coolied) most frequently consumed in Spain was done to determine their carotenoid composition. The results are grouped according to the color ofExpand
The potential for the improvement of carotenoid levels in foods and the likely systemic effects
Carotenoids form one of the most important classes of plant pigments and play a crucial role in defining the quality parameters of fruit and vegetables. Their role in the plant is to act as accessoryExpand
Major fruit and vegetable contributors to the main serum carotenoids in the Spanish diet.
OBJECTIVE To identify the main sources of serum carotenoids (lutein, zeaxanthin, lycopene, beta-cryptoxanthin, alpha-carotene and beta-carotene) among the fruits and vegetables in the Spanish diet,Expand
Seasonal and sex-related variations in six serum carotenoids, retinol, and alpha-tocopherol.
We report the results of a study on the influence of season and sex on serum concentrations of six carotenoids, retinol, and alpha-tocopherol, as determined by reversed-phase HPLC. The subjects wereExpand
Lutein, but not alpha-tocopherol, supplementation improves visual function in patients with age-related cataracts: a 2-y double-blind, placebo-controlled pilot study.
OBJECTIVE We investigated the effect of long-term antioxidant supplementation (lutein and alpha-tocopherol) on serum levels and visual performance in patients with cataracts. METHODS SeventeenExpand
No Significant Effects of Lutein, Lycopene or β-Carotene Supplementation on Biological Markers of Oxidative Stress and LDL Oxidizability in Healthy Adult Subjects
Objective: The objective of this study was to determine the effect of individual carotenoid supplementation on biochemical indices of oxidative status in apparently healthy adult males. Methods:TheExpand
A European multicentre, placebo-controlled supplementation study with alpha-tocopherol, carotene-rich palm oil, lutein or lycopene: analysis of serum responses.
Increased levels of oxidative stress have been implicated in tissue damage and the development of chronic diseases, and dietary antioxidants may reduce the risk of oxidative tissue damage. As part ofExpand