B Glucan
Mostrando 1-12 de 218 artigos, teses e dissertações.
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1. Comparative study on production of α-Amylase from Bacillus licheniformis strains
Alpha amylase (α-1, 4-glucan-glucanhydrolase, EC 3.2.1.1), an extracellular enzyme, degrades α, 1-4 glucosidic linkages of starch and related substrates in an endo-fashion producing oligosaccharides including maltose, glucose and alpha limit dextrin (7). The present study deals with the production and comparative study of production of α-amylase from two
Braz. J. Microbiol.. Publicado em: 2011-12
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2. Evaluation of the antischistosomal activity of sulfated α-D-glucan from the lichen Ramalina celastri free and encapsulated into liposomes
The antischistosomal activity of the sulfated polysaccharide α-D-glucan (Glu.SO4) extracted from Ramalina celastri was evaluated after encapsulation into liposomes (Glu.SO4-LIPO) in Schistosoma mansoni-infected mice. The effect of treatment with Glu.SO4 and Glu.SO4-LIPO (10 mg/kg) on egg elimination, worm burden and hepatic granuloma formation was assessed
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-04
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3. Preservation of rhizobia by Iyophilization with trehalose.
The objective of this study was to determine if trehalose can effectively enhance the viability and storage lifetime of Rhizobium tropici and Rhizobium etli after lyophilization as compared to the traditional protective combination of sucrose and peptone. Two strains of bean-nodulating rhizobia were effectively preserved in the lyophilized state by 100 mM tr
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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4. Influence of drying process variables on fresh and osmotically pre-treated mushrooms.
The aim of this work was to study the drying of fresh and osmotically dehydrated mushrooms and evaluate their qualities. The osmotic treatment was carried out at 20 °C with a 10% w.w?1 salt solution, 80 rpm agitation and 60 min immersion time. The mushrooms were dried in a vertical bed dryer with forced air-flow. An experimental design was applied to evalua
Brazilian Journal of Food Technology. Publicado em: 2011
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5. Avaliação da terapia com B(1-3) glucana associada ao fluconazol na criptococose experimental / Evaluation of ß (1-3) glucan therapy associated with fluconazole in experimental cryptococcosis
A Criptococose é uma enfermidade micótica sistêmica, subaguda ou crônica, que acomete a cavidade nasal, tecidos paranasais e pulmões do homem, animais domésticos e silvestres, podendo disseminar-se para o sistema nervoso central, olhos, pele e outros órgãos. Considerando as dificuldades terapêuticas no tratamento da micose em pequenos animais, inclu
Publicado em: 2011
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6. Síntese de análogos da papulacandina D por simplificação molecular e avaliação de sua atividade antifúngica
The papulacandins are a family of glycolipids isolated, by fermentation, from Papularia spherosperma, and that have shown potent in vitro antifungal activity against different strains of Candida sp. These compounds inhibit the enzyme â(1,3)-Dglucan synthase preventing the â(1,3)-D-glucan synthesis, a vital constituent of fungal cell wall. The papulacandins
Publicado em: 2010
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7. Immune response modulation in chicken immunized with vaccines associated to b-Glucan. / Modulação da resposta imune em aves imunizadas com vacinas aviárias associadas ao b-glucano.
Os b-glucanos são formados por polissacarídeos estruturais da parede celular de leveduras (Saccharomyces cerevisiae), alguns cereais em grãos e fungos. Os b-glucanos apresentam a molécula de glicose ligada ao carbono nas posições b-1,3 e pode apresentar cadeias laterais com o resíduo de glicose ligado nas posições b-1,6. O b-glucano tem sua ação b
Publicado em: 2009
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8. Avaliação da expressão e caracterização de uma exo-ß-1,3-glucanase envolvida no mecanismo de micoparasitismo de Trichoderma asperellum
Species of the genus Trichoderma have been found to attack a wide range of plant-pathogenic fungi and have been used as biocontrol agents. The majority of Trichoderma preparations used commercially for biological control are Trichoderma atroviride or Trichoderma harzianum. However, Trichoderma asperellum, a less well studied species, is also an effective bio
Publicado em: 2008
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9. Extração, purificação e caracterização de polissacarídeos da biomassa do fungo ascomiceto Botryosphaeria rhodina MAMB-05
The composition of the polysaccharides constituting the biomass of the ascomyceteous fungus, Botryosphaeria rhodina MAMB-05, cultivated on glucose as carbon source was investigated following separation of the exopolysaccharides (EPS). Fungal mycelial biomass was exhaustingly washed with water at room temperature until no residual sugars could be detected (ph
Publicado em: 2007
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10. Influence of elevated CO2 atmosphere, nitric oxida and fungai elicitors on production of phytoalexins in soyobean seedlings / Influencia de atmosfera enriquecida em CO2, do radical oxido nitrico e de eliciadores fungicos na produção de fitoalexinas em plantulas de soja
Soybean seedlings (Glycine max L. Merr) grown in open top chambers under high CO2 concentrations have shown photosynthetic increment and increase in productivity, which in turn may modify the productio n of secondary metabolites with farmacological importance. The aim of this work was to analyze the synthesis of flavones, isoflavones and pterocarpans in soyb
Publicado em: 2007
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11. Influência das frações da parede celular do fungo Fonsecaea pedrosoi sobre a ativação de células peritoneais de camundongos in vitro
Chromoblastomycosis is a chronic suppurative granulomatous mycosis that exists all around the world. The Fonsecaea pedrosoi is the most frequent etiologic agent in the world. The infection begins with a trauma and the implantation of conidia or hyphae fragments in the subcutaneous tissue producing the initial lesion. Inside the host, a fungus structure diffe
Publicado em: 2007
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12. Produção de hidrolases pelo fungo Dicyma pulvinata, caracterização bioquímica de uma proteinase e purificação parcial desta enzima
The fungus Dicyma pulvinata (Deuteromycotina: Hyphomycete) shows strong biocontrol potential for plant diseases, and has been found in lesions caused in plants by Microcyclus ulei (Ascomycete), the agent of the South American Leaf Blight (SALB). This disease of the rubber tree (Hevea spp.), is a limiting factor for latex production and for expansion culture
Publicado em: 2007