Red Macroalgae
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Stream macroalgal flora from Parnaíba River Basin, Brazil: reducing Wallacean shortfall
Resumo: A perda de biodiversidade é um consenso. Os déficits de conservação tornam a conservação da diversidade biológica ainda mais desafiadora. Para muitos táxons, o conhecimento sobre suas distribuições é escasso, o que é chamado de Déficit Wallaceano. Essa situação não é diferente quando tratamos da biodiversidade de algas, especialmente
Biota Neotrop.. Publicado em: 01/04/2019
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2. Evaluation of acetylcholinesterase inhibitory activity of Brazilian red macroalgae organic extracts
Abstract Alzheimer's disease affects nearly 36.5 million people worldwide, and acetylcholinesterase inhibition is currently considered the main therapeutic strategy against it. Seaweed biodiversity in Brazil represents one of the most important sources of biologically active compounds for applications in phytotherapy. Accordingly, this study aimed to carry o
Rev. bras. farmacogn.. Publicado em: 2015-12
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3. Antibacterial, antifungal and cytotoxic activities exhibited by endophytic fungi from the Brazilian marine red alga Bostrychia tenella (Ceramiales)
Abstract Marine environment is one of the most important sources regarding natural products research. Besides, marine microorganisms have been denominated as a talented natural source for discovery of new leads. Although the association of macroalgae and fungi has been described regarding ecological issues, there is a lack of studies about marine seaweed end
Rev. bras. farmacogn.. Publicado em: 2015-12
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4. Algal polysaccharides as source of plant resistance inducers
Algal compounds exhibit great potential to enhance plant growth and resistance to abiotic and biotic stresses. This review focuses on aspects concerning the physical-chemical properties, function and biological activity of macroalgae polysaccharides. Updated results of the main poly- and oligosaccharides studied for the control of plant diseases are discusse
Trop. plant pathol.. Publicado em: 2014-04
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5. Adiciones a la ficoflora marina de Venezuela: III. Ceramiales y Rhodymeniales (Rhodophyta)
An inventory of the macroalgae of the subtidal zone from 5 to17 m depth was made in the localities of Puerto Maya (Aragua state), Puerto Cruz (Vargas state), Madrizquí and Boca de Cote (Archipiélago Los Roques National Park). Four new records of red algal species (Rhodophyta) are reported for the Venezuelan coast: Apoglossum gregarium, Platysiphonia cariba
Rodriguésia. Publicado em: 2013-09
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6. Effect of depth on growth and pigment contents of the macroalgae Gracilaria bursa-pastoris
The effects of environmental parameters on biomass, growth and pigment content of the red seaweed Gracilaria bursa-pastoris (S.G. Gmel.) P.C. Silva was investigated under field conditions in Thau Lagoon (France). The seaweed was cultivated in cages placed at three depths (1.0, 2.0 and 4.0 m) over a one-year period. The results showed elevated biomass and gro
Revista Brasileira de Farmacognosia. Publicado em: 15/05/2012
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7. Cultivation of the red algae Kappaphycus alvarezii in Brazil and its pharmacological potential
Kappaphycus alvarezii (Rhodophyta, Gigartinales) is a red algae widely cultivated as the main source of raw material for the carrageenan industry. This hydrocolloid is normally used in the food industry as a gelling and stabilizing agent. The facility of its commercial farming based on vegetative propagation promoted the success of the aquaculture of this ma
Revista Brasileira de Farmacognosia. Publicado em: 24/04/2012
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8. Chemical constituents from red algae Bostrychia radicans (Rhodomelaceae): new amides and phenolic compounds
This study describes the isolation and structural determination of two amides, isolated for the first time: N,4-dihydroxy-N-(2'-hydroxyethyl)-benzamide (0.019%) and N,4-dihydroxy-N-(2'-hydroxyethyl)-benzeneacetamide (0.023%). These amides, produced by the red macroalgae Bostrychia radicans, had their structures assigned by NMR spectral data and MS analyses.
Quím. Nova. Publicado em: 2012
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9. Glycolipids from macroalgae: potential biomolecules for marine biotechnology?
Brown, red and green algae from the Southeastern coast of Brazil were successively extracted with chloroform/methanol 2:1 and 1:2 (v/v). The crude lipid extract was partitioned according to Folch and the lower phase enriched in glycolipids was fractionated on a silica gel column chromatography eluted with chloroform, acetone and methanol. Three major orcinol
Revista Brasileira de Farmacognosia. Publicado em: 01/04/2011
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10. Efeitos da radiação ultravioleta-b sobre a morfisiologia de kappaphycus alvarezii (DOTY) doty ex P. Silva (gigartinales) variantes pigmentares verde e vermelha
The effects of ultraviolet radiation in the biological relevant wavebands of UV-A (315#400 nm) and UV-B (280#315 nm) on algae have become an important issue as a man-made depletion of the protecting ozone layer has been reported. However, experimental designs to investigate this issue are manifold and the target organisms are extremely diverse. Data are incl
Publicado em: 2009
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11. Biodiversidade e aspectos ecolÃgicos de Macroalgas Marinhas EpÃfitas da Angiosperma Marinha Halodule wrightii na BaÃa de Suape, Pernambuco
Studies were carried out in Suape Bay - PE, located 40 km south of Recife city (8Â15â00â, 8Â30â00âS and 34Â55â00â, 35Â05â00âW), in order to assess the biodiversity and ecological aspects of seaweed epiphytes of Halodule wrightii. Six collections were carried out from July/September 2006 to January/March 2007, during the spring low tide. Three sta
Publicado em: 2008
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12. Molecular characterization of nitrate reductase gene and it expression in the marine red alga Gracilaria tenuistipitata (Rhodophyta) / Aspectos moleculares de nitrato redutase da macroalga marinha Gracilaria tenuistipitata (RHODOPHYTA): seqüenciamento do gene e estudo da expressão do RNA mensageiro
In the marine environment, the major source of nitrogen is nitrate, which must be reduced before incorporation into organic compounds, such as amino acids and nitrogen bases (purines and pyrimidines). The first enzyme that participates in the nitrogen assimilation process is nitrate reductase (NR), which is responsible for the conversion of nitrate to nitrit
Publicado em: 2006