Gracilaria Domingensis
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Moluscos associados a macroalgas do gênero Gracilaria (Rhodophyta): importância das frondes algais como microhabitat em um manguezal hipersalino no Nordeste do Brasil
As frondes de macroalgas marinhas exercem um importante papel nos ecossistemas costeiros, tendo em vista que os bancos de algas são utilizados como microhabitat por diferentes táxons, incluindo os moluscos, que estão entre os mais abundantes e diversos animais dos ecossistemas marinhos. Neste estudo, caracterizou-se a malacofauna associada às macroalgas
Braz. J. Biol.. Publicado em: 2014-08
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2. Substâncias encontradas em algas rodofíceas do litoral paraibano e do Mar Jônico - Grécia
Organismos marinhos são fontes potencialmente geradoras de metabólitos secundários bioativos que podem representar ferramentas úteis no desenvolvimento de novos fármacos. As algas vermelhas são consideradas a principal fonte de muitos metabólitos biologicamente ativos, quando comparadas com outras classes de algas, e compreendem cerca de 8000 espécie
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2012
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3. Seasonal changes in the pigment composition of natural population of Gracilaria domingensis (Gracilariales, Rhodophyta)
The concentrations of phycobiliproteins (phycoerythrin and phycocyanin), chlorophyll-a and total soluble proteins were determined monthly in three strains (red, green and brown) of Gracilaria domingensis (Kützing) Sonder ex Dickie, collected from natural populations on the coast of Rio Grande do Norte, Brazil. In all the strains, pigment and protein concent
Revista Brasileira de Farmacognosia. Publicado em: 05/06/2012
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4. Antioxidant activity and chemical composition of the non polar fraction of Gracilaria domingensis (Kützing) Sonder ex Dickie and Gracilaria birdiae (Plastino & Oliveira)
Gracilaria domingensis (Kützing) Sonder ex Dickie and Gracilaria birdiae (Plastino & Oliveira) (Gracilariales, Rhodophyta) are seaweeds that occur on the Brazilian coast. Based on their economic and pharmaceutical importance, we investigated the antioxidant activity of the methanolic, ethyl acetate and hexane extracts of both species. The hexane extracts di
Revista Brasileira de Farmacognosia. Publicado em: 15/05/2012
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5. Growth and accumulation of carotenoids and nitrogen compounds in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) cultured under different irradiance and nutrient levels
Effects of the interaction of irradiance and nutrient levels on growth and contents of photosynthetic pigments, carotenoids and proteins in Gracilaria domingensis (Kütz.) Sonder ex Dickie (Gracilariales, Rhodophyta) were investigated experimentally. Nutrient availability provided by dilutions of the nutrient solution of von Stosch (25 and 50%, which corresp
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
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6. Absorption of metals and characterization of chemical elements present in three species of Gracilaria (Gracilariaceae) Greville: a genus of economical importance
Gracilaria Greville is a genus of seaweed that is economically explored by the cosmetic, pharmaceutical and food industries. One of the biggest problems associated with growing Gracilaria is the discharge of heavy metals into the marine environment. The absorption of heavy metals was investigated with the macroalga Gracilaria tenuistipitata Zhang et Xia, cul
Revista Brasileira de Farmacognosia. Publicado em: 15/04/2011
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7. Analyses of photoprotective compounds in red algae from the Brazilian coast
Qualitative and quantitative studies of mycosporine-like amino acids (MAAs) in three species of the genus Gracilaria Greville (G. birdiae, G. domingensis and G. tenuistipitata) were performed. A simple and efficient extraction procedure based on ethanol was described. HPLC, UV and mass spectrometry experiments revealed different profiles between extracts obt
Revista Brasileira de Farmacognosia. Publicado em: 01/04/2011
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8. Cultivation of native seaweed Gracilaria domingensis (Rhodophyta) in Southern Brazil
The aim of this work was to study the cultivation of Gracilaria domingensis in a mussel farming urbanized area in Santa Catarina, Brazil. Relative growth rate was the parameter used to evaluate the cuttings attachment methods on the cultivation rope, cuttings density, cultivation period and cystocarpic versus unfertile thalli performance. The cultivation was
Brazilian Archives of Biology and Technology. Publicado em: 2010-06
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9. Biological activities of extracts from brazilian marine algae / Atividades biológicas de extratos de algas marinhas brasileiras
Algae are important sources of raw material and biological active compounds used in pharmaceutical, cosmetic and food industries. Marine Brazilian red macroalge, Gracilaria birdiae e Gracilaria domingensis, are found in the Brazilian northeast coast and have high potential for industries. The aim of this work was to evaluate the antioxidant activity of the e
Publicado em: 2010
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10. Efeitos do ágar no crescimento de explantes e na formação de calos em morfos pigmentares de Gracilaria domingensis (Kützing) Sonder ex Dickie (Gracilariales, Rhodophyta)
Os efeitos da concentração de ágar no crescimento de explantes e na formação de calos foram avaliados em culturas axênicas de gametófitos femininos de morfos de coloração verde e vermelha de Gracilaria domingensis (Kützing) Sonder ex Dickie. Culturas unialgáceas foram mantidas em água do mar esterilizada (30-32 ups) enriquecida com 25% da soluç�
Brazilian Journal of Botany. Publicado em: 2009-09
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11. Variation in protein and pigment content in colour strains of Gracilaria domingensis in the natural populations of Rio do Fogo (RN) / Variação no conteúdo protéico e pigmentar em variantes cromáticas de Gracilaria domingensis nas populações naturais de Rio do Fogo-RN, BRASIL
The seaweed Gracilaria domingensis is a common species in the coast of Rio Grande do Norte. This species lives in the intertidal zone, where colour strains (red, green and brown) co-occur during the whole year. Seaweeds that live in this region are exposed to daily changes and to the rhythm of the tide. During the low tide they are exposed to dissection, hip
Publicado em: 2009
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12. Zonação de comunidade bêntica do entremarés em molhes sob diferente hidrodinamismo na costa norte do estado do Rio de Janeiro, Brasil
O presente estudo pretende comparar a distribuição vertical da comunidade bêntica na zona entremarés em dois locais compostos por matacões graníticos caracterizados por hidrodinâmica distinta, reflexo da diferença na orientação dos molhes nas praias do Farol de São Tomé (Píer) e na Barra do Furado (Barra), norte do Estado do Rio de Janeiro. Quad
Revista Brasileira de Zoologia. Publicado em: 2008-12