Green Seaweed
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Cytotoxic activity of marine algae against cancerous cells
This paper presents an investigation on the cytotoxic activity in human tumor cell from dichloromethane, chloroform, methanol, ethanol, water extracts, and hexane and chloroform fractions from green, brown and red algae collected at Riacho Doce Beach, north coast of Alagoas, Brazil, against the cancer cells K562 (chronic myelocytic leukemia), HEp-2 (laryngea
Rev. bras. farmacogn.. Publicado em: 13/09/2013
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2. Sulfated polysaccharide extracted of the green algae Caulerpa racemosa increase the enzymatic activity and paw edema induced by sPLA2 from Crotalus durissus terrificus venom
Sulfated polysaccharides derived from seaweed have shown great potential for use in the development of new drugs. In this study, we observed that a low-molecular-weight sulfated polysaccharide from Caulerpa racemosa, termed CrSP, could interact with secretory phospholipase A2 (sPLA2) isolated from Crotalus durissus terrificus venom. When native sPLA2 (14 kDa
Rev. bras. farmacogn.. Publicado em: 02/08/2013
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3. Anticoagulant activity of a sulfated polysaccharide isolated from the green seaweed Caulerpa cupressoides
The aim of this study was to evaluate certain molecular characteristics of a sulfated polysaccharide (SPs) with anticoagulant properties, isolated from Caulerpa cupressoides (Chlorophyta). Crude SPs were extracted by proteolytic digestion (papain), followed by ion-exchange chromatography on a DEAE-cellulose column. The fractions obtained were analyzed for mo
Brazilian Archives of Biology and Technology. Publicado em: 2011-08
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4. Effects of nitrate and phosphate availabilities on growth, photosynthesis and pigment and protein contents in colour strains of Hypnea musciformis (Wulfen in Jacqu.) J.V. Lamour. (Gigartinales, Rhodophyta)
In Brazil, Hypnea musciformis is the main raw material for carrageenan production and the knowledge of nitrogen and phosphorus metabolism in algae is critical for the success of cultivation because these elements can limit seaweed productivity. Thus, the objective of this study was to evaluate the effects of nitrate (zero to 100 μM) and nitrate plus phospha
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011
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5. Estudo fitoquímico com fins farmacológicos da alga bentônica Caulerpa racemosa
Caulerpa racemosa (Forssk.) J.Agardh is a green seaweed widely distributed in Brazil northeast, living on rocks or in association with other seaweeds. Pharmacoligacal studies related the antimicrobial and repellent activities of the extract. The literature related the presence of alkaloids, terpenoids, steroids and some others class of metabolites. The purpo
Publicado em: 2010
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6. Efeito da salinidade da água do mar no rendimento, composição e atividades biológicas de frações polissacarídicas da Chlorophyta Caulerpa cupressoides var. flabellata
Polissacarídeos sulfatados de algas marinhas têm sido descritos por apresentarem diversas atividades farmacológicas. No entanto, nada se sabe a respeito da influência da salinidade da água do mar na estrutura de polissacarídeos sulfatados de algas verdes e nas atividades farmacológicas por eles desempenhadas. Por isso, objetivo principal deste trabalh
Publicado em: 2010
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7. 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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8. A macrofauna fital de Kappaphycus alvarezii (Doty) Doty ex. Silva e sua influência na taxa de crescimento da alga em um cultivo em Ubatuba, SP. / The phytal macrofauna of Kappaphycus alvarezii (Doty) Doty ex. Silva and its influence on the algal growth rate field cultivation at Ubatuba, SP.
The present study aims to assess the influence of population densities of mobile and semi-sessile phytal macrofauna on the growth of the seaweed Kappaphycus alvarezii in field experimental cultivation at Ubatuba, northern coast of São Paulo State. Four thalli of each green, red and brown color morphotypes were analyzed in summer and winter seasons. Their gr
Publicado em: 2007
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9. Extraction, yield and properties of Kappaphycus alvarezii (Doty) Doty ex P. Silva carrageenan, in experimental cultivation in Ubatuba, São Paulo / Extração, teor e propriedades de carragenana de Kappaphycus alvarezii (Doty) Doty ex P. Silva, em cultivo experimental em Ubatuba, SP.
ABSTRACT Cap.2 Procedures for the quantification of carrageenans generally involve drying of seaweed, followed by washing, alkali treatment, extraction in water or in lightly alkaline solutions, and separation of the carrageenan from the residues. Obtained results depend mostly on the various methods involved and equipment utilized. This paper was designated
Publicado em: 2001