Natural Pigments
Mostrando 13-24 de 74 artigos, teses e dissertações.
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13. Growth, photosynthetic pigments and production of essential oil of long-pepper under different light conditions
ABSTRACT Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plants light influences not only growth but also essential o
An. Acad. Bras. Ciênc.. Publicado em: 27/04/2017
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14. Production of phycobiliproteins by Arthrospira platensis under different lightconditions for application in food products
There has been an increase in investment in research on new sources of natural pigments for food application. Some cyanobacteria can change the structures responsible for light harvesting and cellular processes according to the wavelength and light intensity. This phenomenon has been described as complementary chromatic adaptation. The present study aimed
Food Sci. Technol. Publicado em: 2015-04
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15. Dye Sensitized Solar Cells Using Natural Pigments from Five Plants and Quasi-Solid State Electrolyte
Células solares sensibilizadas por corantes (DSSCs) foram fabricadas usando corantes naturais extraídos das flores de Amaranthus caudatus, Bougainvillea spectabilis, Delonix regia, Nerium oleander, Spathodea companulata e uma mistura de extratos. O desempenho da célula fotoeletroquímica (PEC) DSSCs desses
J. Braz. Chem. Soc.. Publicado em: 2015-01
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16. Yearly variation of bacterial production in the Arraial do Cabo protection area (Cabo Frio upwelling region): an evidence of anthropogenic pressure
Arraial do Cabo is where upwelling occurs more intensively on the Brazilian coast. Although it is a protection area it suffers anthropogenic pressure such as harbor activities and sporadic sewage emissions. Short-time studies showed a high variability of bacterial production (BP) in this region but none of them evaluated BP during long periods in a large spa
Braz. J. Microbiol.. Publicado em: 2013-12
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17. Efeitos de mineralizadores na produção de pigmentos cerâmicos de óxido de ferro resíduo e comercial em matriz de sílica amorfa / Eflect of mineralization in the production of ceramic pigments commercial and waste iron in amorphow silica matriz
A utilização de óxido de ferro na produção de pigmentos é justificada pela sua ampla variedade de cores, alta estabilidade térmica e atoxidade. Estes óxidos podem ser de origem natural ou sintética, sendo que atualmente vem ganhando espaço o uso de subprodutos industriais como fonte de óxidos pigmentantes. Já entre os processos para produção de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2012
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18. Photosynthetic analyses of two native Atlantic Forest species in regenerative understory of eucalyptus plantation
Gas exchange, chlorophyll afluorescence, and photosynthetic pigments of Xylopia sericeaA. St.-Hil. and Siparuna guianensis Aubl. were evaluated during the rainy season and the dry season (2009-2010) in three understories with different ecological conditions (irradiance, water availability, and temperature) located in the União Biological Reserve (known as R
Braz. J. Plant Physiol.. Publicado em: 2012-06
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19. Characterization of the photosynthetic conditions and pigment profiles of the colour strains of Hypnea musciformis from field-collected and in vitro cultured samples
Hypnea musciformis (Wulfen) JV Lamour. is a species of great economic interest as it produces Κ-carrageenan and has shown biological activities against HIV and HSV viruses. This species displays different colour strains in its natural habitat, which may have implications for the biotechnological potential of the species. The aim of this study was to charact
Revista Brasileira de Farmacognosia. Publicado em: 24/05/2012
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20. Fenologia, aspectos ecofisiológicos e seleção de linhagens em cultivos no mar de Gracilaria birdiae (Rhodophyta, Gracilariales) no Estado do Rio Grande do Norte, Brasil / Phenology, ecophysiological aspects and strains selection of Gracilaria birdiae (Rhodophyta, Gracilariales) cultivated in the sea at Rio Grande do Norte State, Brazil
Gracilaria birdiae Plastino &E.C. Oliveira é uma das principais espécies de agarófitas coletadas no nordeste brasileiro. Devido a sua importância econômica, novos incentivos visando o manejo adequado das populações naturais e a seleção de linhagens mais produtivas para o cultivo em escala comercial dessa espécie são de extrema necessidade. Para at
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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21. Obtenção e propriedades de toruleno da levedura Rhodotorula glutinis / Obtaining and properties of torulene from Rhodotorula glutinis yeast
Carotenoids are natural colorants, some of which are precursors of vitamin A. Since the past decade, an important role in reducing the risk of various degenerative diseases was attributed to these compounds. With these vital functions, the search for sources has intensified worldwide. The biotechnological production of specific carotenoids, using bacteria, f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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22. Estresse oxidativo em plantas micropropagadas de pitcairnia albiflos herb. (bromeliaceae) durante a aclimatização e sob estresse hídrico
Pitcairnia albiflos Herb. (Bromeliaceae) atualmente se encontra na lista de espécies ameaçadas de extinção. Essa espécie é endêmica dos afloramentos rochosos do município do Rio de Janeiro, RJ, e vem sofrendo com o pisoteio de alpinistas, queimadas, invasão de gramíneas exóticas e extrativismo vegetal. A micropropagação pode ser utilizada como a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2011
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23. Turmeric root and annato seed in second-cycle layer diets: performance and egg quality
The objective of this study was to evaluate the effects of the inclusion of annato (Bixa orellana L.) and turmeric (Turmeric longa L.) in layer feeds on live performance, egg quality, and yolk pigmentation and depigmentation time. A number of 144 layers were distributed in a completely randomized experimental design, with four treatments with six replicates
Revista Brasileira de Ciência Avícola. Publicado em: 2011-09
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24. Betalains: properties, sources, applications, and stability ? a review.
2009
International Journal of Food Science and Technology. Publicado em: 2011