Lutein
Mostrando 13-24 de 83 artigos, teses e dissertações.
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13. Antioxidant activities and lutein content of 11 marigold cultivars (Tagetes spp.) grown in Thailand
Antioxidant activities and total phenolic content (TPC) were analyzed in ethanol extracts of 11 marigold cultivars grown in Thailand. Antioxidant activity assays performed in this study were the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical cation scavenging activity, ferric ion reducing antioxidant power (FRAP), 2,2-diphenyl-1-picry
Food Sci. Technol. Publicado em: 2015-04
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14. Chemical composition and antioxidant activity of jatobá-do-cerrado (Hymenaea stigonocarpa Mart.) flour
The Brazilian Savannah, known as "Cerrado," has an extensive biodiversity, but it is under explored. Among the native vegetables is the jatobá-do-cerrado (Hymenaea stigonocarpa Mart.), a legume with great potential for exploration for its content of dietary fiber. Legumes are an important source of nutrient compounds, such as phenolic compounds and vitamins
Food Sci. Technol. Publicado em: 2014-09
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15. Main food sources of carotenoids, according to the purpose and degree of processing, for beneficiaries of the 'Bolsa Família' in Brazil
The intake of carotenoids is associated with antioxidant properties and some of these substances have activity of pro-vitamin A. This study aimed to estimate the intake of carotenoids (average values) by the Brazilian population focusing on beneficiaries of the 'Bolsa Família' Program and identify the dietary sources, according to the purpose and degree of
Food Sci. Technol. Publicado em: 2014-06
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16. Phytochemical profile, toxicity and antioxidant activity of Aloysia gratissima (Verbenaceae)
Aloysia gratissima (Gill. et Hook) Tronc. (Verbenaceae) is native to South America with folk therapeutic applications for a wide range of diseases. The polyphenolic and carotenoid profile, toxicity, and antioxidant activity of aqueous extract of Aloysia gratissima were investigated. HPLC analyses showed high amounts of ferulic acid, trans-cinnamic acid and p
Quím. Nova. Publicado em: 2013
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17. Potencial nutricional da amêndoa e da polpa da guarirova, Syagrus oleracea (Mart.) Becc.
The aim of this study was to evaluate the nutritional potential of the fruit, antinutritional factors and in vitro digestibility of proteins of the pulp and kernel guarirova (Syagrus oleracea (Mart.) Becc.). Regarding lipids, we performed physicochemical characterization of oils, fatty acid composition and index of nutritional quality. For nutritional assess
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/05/2012
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18. Antigenotoxic activity of diet compounds and their influence in the expression of genes involved in response to oxidative stress / Atividade antigenotóxica de compostos da dieta e sua influência na expressão de genes de resposta ao estresse oxidativo
Os pigmentos naturais, além de fornecerem cor e beleza aos diferentes organismos, desempenham importantes funções e ações biológicas, como as funções vitais de fotossíntese, respiração celular e a ação antioxidante. Assim, o presente estudo investigou os potenciais citotóxicos, genotóxicos e protetores dos pigmentos naturais clorofila b (CLb)
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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19. Desenvolvimento e validação de método espectrofotométrico para determinação de corante à base de luteína adicionado em iogurte desnatado
A simple analytical method for extraction and quantification of lutein colorant added to yogurt was developed and validated. The method allowed complete extraction of carotenoids using tetrahydrofuran in vortex, followed by centrifugation, partition to diethyl ether/petroleum ether, and drying. The carotenoids dissolved in ethanol were quantified by UV-Vis s
Quím. Nova. Publicado em: 2012
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20. Alelopatia e bioprospecção em Rapanea ferruginea e Rapanea umbellata
Allelopathy is a process that involves primary or secondary metabolites produced by plants and microorganisms, which influences the growth and development of agricultural and biological systems. The intensity of plant allelopathic effects may depend on the hábitat, age and the biotic and abiotic conditions during the seasons in which they were collected. Wh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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21. Estabilidade oxidativa de queijo prato adicionado de luteína / Oxidative stability of cheese prato added with lutein
Lutein is associated with the reduction and prevention of age-related macular degeneration (ARMD), the main cause of irreversible blindness in the elderly. As this carotenoid is not synthesized by the human organism, its addition in cheese Prato is an option to lutein supplementation in the diet, beyond being able to act in the prevention of photo-oxidation.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2011
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22. Effects of heavy metals and light levels on the biosynthesis of carotenoids and fatty acids in the macroalgae Gracilaria tenuistipitata (var. liui Zhang & Xia)
We present here the effect of heavy metals and of different light intensities on the biosynthesis of fatty acids and pigments in the macroalga Gracilaria tenuistipitata (var. liui Zhang & Xia). In order to verify the fatty acid content, gas chromatography with flame ionization detection (GC-FID) was employed. Pigments (major carotenoids and chlorophyl-a) wer
Revista Brasileira de Farmacognosia. Publicado em: 15/04/2011
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23. Estabilidade e qualidade de iogurte adicionado de luteína e validação de método para determinação de riboflavina em iogurte / Stability and quality of yogurt supplemented with lutein and validation method for determination of riboflavin in yogurt
A luteína, a qual são atribuídas propriedades antioxidantes, está associada à diminuição e prevenção da degeneração macular relacionada à idade (DMRI), principal causa de cegueira irreversível em idosos. Como este carotenóide não é sintetizado pelo organismo humano, a sua adição em iogurte é mais uma opção de suplementação de luteína,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2010
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24. Water extracts of cabbage and kale inhibit ex vivo H2O2-induced DNA damage but not rat hepatocarcinogenesis
The chemopreventive potential of water extracts of the Brassica vegetables cabbage and kale was evaluated by administering their aqueous extracts in drinking water ad libitum to Wistar rats submitted to Ito’s hepatocarcinogenesis model (CB group and K group, respectively - 14 rats per group). Animals submitted to this same model and treated with water were
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-03