Polysacharide
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. SÃntese e caracterizaÃÃo de partÃculas de levana-magnetita e sua utilizaÃÃo como matriz para imobilizaÃÃo de tripsina
O polissacarÃdeo levana foi utilizado como revestimento de partÃculas de magnetita, as quais foram obtidas pelo mÃtodo de co-precipitaÃÃo de uma soluÃÃo contendo Ãons de Fe(II) e Fe(III) em meio aquoso alcalino. As partÃculas de levana-magnetita foram caracterizadas por microscopia eletrÃnica de varredura (MEV), magnetometria, difraÃÃo de Raios-X
Publicado em: 2008
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2. Solid polymer electrolytes based on polysacharide: synthesis and characterization. / Eletrólitos sólidos poliméricos à base de polissacarídeos: síntese e caracterização.
The synthesis and characterization of new types of solid polymer electrolytes based on hydroxyethyl and hydroxypropyl cellulose grafted with different polyethers were investigated. The synthesis is based on the reaction between the cellulose derivative and mono and difunctional isocyanates prepared from amines of polyethylene oxide and polypropylene oxide. I
Publicado em: 2000
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3. Modelagem e simulação de um processo inovativo para sintese enzimatica de dextrana : verificação da aplicabilidade do sistema para processos industriais
Dextran is a polysacharide obtained fiom sucrose, a common and cheap raw material in Brazil. Its application depends on its molecular weight, that presents a large range. There are dextrans of molecular weight fiom thousands to millions of daltons. The enzymatic synthesis of dextran is possible because the enzyme used to obtain dextran is stable under large
Publicado em: 2000
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4. Constituintes de Gnaphalium spathulatum L. e analises espectrais de derivados do Glutinano
Gnaphalium spathulatum L., Compositae, is considered to be a culture invasive and occurs all over the State of São Paulo. Extracts of the aerial parts of the plant were prepared and analysed by the currently used chromatographic techniques. We were able to detect the following classes of compounds: long chain hydrocarbons, long chain esters, long chain fatt
Publicado em: 1981
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5. Specific inhibition of in vitro Candida-induced lymphocyte proliferation by polysaccharidic antigens present in the serum of patients with chronic mucocutaneous candidiasis.
A specific inhibitory activity of in vitro proliferative responses of normal human lymphocytes to Candida metabolic antigen was found in the serum of 6 out of 23 children with chronic mucocutaneous candidiasis. In each of the six patients, the presence of an inhibitory activity was associated with Candida-specific cellular defects, characterized by a negativ
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6. Structure and serology of the native polysaccharide antigen of type Ia group B Streptococcus
The native polysaccharide antigen isolated from type Ia group B Streptococcus by using pH-controlled growth conditions and extraction procedures contains D-galactose, D-glucose, 2-acetamido-2-deoxy-D-glucose, and sialic acid in the molar ratio of 2:1:1:1. The structure of the native type Ia antigen has been elucidated; it can be represented by the following
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7. Up-Regulation of CD40 Ligand and Induction of a Th2 Response in Children Immunized with Pneumococcal Polysaccharide Vaccines
We wished to determine whether pneumococcal polysaccharide antigens induce mRNA expression of CD40 ligand (CD40L) and Th1 or Th2 cytokines in unimmunized individuals in vitro and whether immunization with the 23-valent pneumococcal polysaccharide vaccine induces changes in CD40L and cytokine mRNA expression. Children with recurrent respiratory infections wer
American Society for Microbiology.
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8. Growth of Hyperthermophilic Archaeon Pyrococcus furiosus on Chitin Involves Two Family 18 Chitinases
Pyrococcus furiosus was found to grow on chitin, adding this polysacharide to the inventory of carbohydrates utilized by this hyperthermophilic archaeon. Accordingly, two open reading frames (chiA [Pf1234] and chiB [Pf1233]) were identified in the genome of P. furiosus, which encodes chitinases with sequence similarity to proteins from the glycosyl hydrolase
American Society for Microbiology.