Alginic Acid
Mostrando 1-12 de 28 artigos, teses e dissertações.
-
1. Preparação e caracterização dos produtos de reação entre o ácido algínico com mono, di- e trietanolamina. Avaliação da interação do derivado de monoetanolamina com fármacos / Preparation and characterization of products of reaction of alginic acid with mono, di-, and triethanolamine. Avaluation of interaction of monoethanolamine derivative with drugs
Foram preparados produtos da reação do ácido algínico com a monoetanolamina (MEA), dietanolamina (DEA) e trietanolamina (TEA) sob refluxo em meio de clorofórmio, os quais foram denominados MEA, DEA e TEA-produtos. Os compostos foram caracterizados por Análise Elementar e Espectroscopia Vibracional na Região do Infravermelho. As técnicas termoanalíti
Publicado em: 2011
-
2. Stripping voltammetric determination of cadmium in sea water using a carbon paste electrode modified with alginic acid from brown algae
A concentração do cádmio em um meio aquoso foi determinada usando-se um elétrodo de carbono ácido-modificado de pasta de alginina. O elétrodo de trabalho foi preparado usando-se uma mistura homogênea de pó de grafite, alginina ácida (AA) e óleo mineral. A voltametria de onda quadrada com redissolução anódica (SWASV) usando-se este elétrodo modi
Journal of the Brazilian Chemical Society. Publicado em: 2010
-
3. Kinetic and equilibrium study of biosorption of lead and copper ions by sargassum seaweed in nanocomponent and binary systems / Estudo cinético e do equilíbrio da biossorção dos íons chumbo e cobre pela macroalga Sargassum sp. em sistemas monocomponente e binário
Brown seaweeds from the genus Sargassum are widely studied for use as potential candidates for biosorption purposes, particularly in the treatment of heavy-metals contaminated effluents. The cellular structure of this seaweed presents charged molecules, such as alginic acid, able to attract and recover metal cation ions. The objective of this work was to stu
Publicado em: 2010
-
4. Competitive biosorption of nickel and copper ions on alginae and algae Sargassum filipendula / Bioadsorção competitiva dos ions niquel e cobre em alginato e alga marinha Sargassum filipendula
Environmental biotechnology studies have been conducted using alternative materials in order to eliminate heavy metal ions from industrial effluents. Brown algae are an attractive materials, due to their large availability and their reduced participation in the vital functions of marine ecosystems. The main structural polysaccharide of the brown algae is alg
Publicado em: 2009
-
5. Polymeric microcapsules poduction from sodium alginic acid for cell therapy
Development of polymeric materials has been increasingly emphasized in Biomedicine. Here, we evaluate the use of microcapsules made of Biodritin®, a biocompatible polymer compound which contains sodium alginic acid, a natural polymer extracted from algae, and Cis-Chondroitin sulfate, a glycosaminoglycan from the extracellular matrix. Gelation of this polyme
Materials Research. Publicado em: 2007-12
-
6. Thermal analytical studies of alginic acid and its alkaline, earth-alkaline, ammonium, mono-, di- and triethanolammonium alginates / "Estudos termoanalíticos do ácido algínico e dos alginatos de metais alcalinos, alcalino-terrosos, amônio, mono-, di- e trietanolamônio"
Os alginatos de metais alcalinos (Li+, Na+ e K+), alcalino-terrosos (Mg2+, Ca2+, Sr2+ e Ba2+), de amônio, mono-, di- e trietanolamônio foram sintetizados por neutralização do ácido algínico com os respectivos hidróxidos, ou carbonatos, e com as aminas. Os sais foram caracterizados por análise elementar e espectroscopia na região do infravermelho, co
Publicado em: 2007
-
7. THE STRATEGY OF EMPIRICAL RESEARCH AND OPTIMIZATION PROCESS
Empirical modeling is considered from the perspectives of a general scheme for the Strategy of Empirical Research and Optimization Process (SEROP). This approach intends to facilitate the understanding of the necessary steps to arrive to mathematical models able to appropriately describe the behavior of a group of controllable independent variables related t
Pesquisa Operacional. Publicado em: 2001-06
-
8. Bacteria Decomposing Alginic Acid 1
-
9. Association of alginate from Pseudomonas aeruginosa with two forms of heparin-binding lectin isolated from rat lung.
An endogenous heparin-binding lectin activity isolated from rat lung was separated into two distinct isolectin forms which showed subtle changes in carbohydrate specificity. The two lectin forms displayed different specificities toward alginic acid-purified cystic fibrosis isolates of Pseudomonas aeruginosa when assayed by inhibition of both hemagglutination
-
10. Alginic acid synthesis in Pseudomonas aeruginosa mutants defective in carbohydrate metabolism.
Mutant cells of mucoid Pseudomonas aeruginosa isolated from cystic fibrosis patients were examined for their ability to synthesize alginic acid in resting cell suspensions. Unlike the wild-type strain which synthesizes alginic acid from glycerol, fructose, mannitol, glucose, gluconate, glutamate, or succinate, mutants lacking specific enzymes of carbohydrate
-
11. Exopolysaccharides Produced by Phytopathogenic Pseudomonas syringae Pathovars in Infected Leaves of Susceptible Hosts
Bacterial exopolysaccharide (EPS) was extracted from infected leaves of several host plants inoculated with phytopathogenic strains of Pseudomonas syringae pathovars. Extraction was by a facilitated diffusion procedure or by collection of intercellular fluid using a centrifugation method. The extracted EPS was purified and characterized. All bacterial pathog
-
12. Cell Wall Assembly in Fucus Zygotes: I. Characterization of the Polysaccharide Components 12
Fertilization triggers the assembly of a cell wall around the egg cell of three brown algae, Fucus vesiculosus, F. distichus, and F. inflatus. New polysaccharide polymers are continually being added to the cell wall during the first 24 hours of synchronous embryo development. This wall assembly involves the extracellular deposition of fibrillar material by c