Exopolysaccharides
Mostrando 1-12 de 101 artigos, teses e dissertações.
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1. Role of extracellular DNA in Enterococcus faecalis biofilm formation and its susceptibility to sodium hypochlorite
Abstract Objective This study investigated the role of extracellular deoxyribonucleic acid (eDNA) on Enterococcus faecalis ( E. faecalis ) biofilm and the susceptibility of E. faecalis to sodium hypochlorite (NaOCl). Methodology E. faecalis biofilm was formed in bovine tooth specimens and the biofilm was cultured with or without deoxyribonuclease (DNase),
J. Appl. Oral Sci.. Publicado em: 12/08/2019
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2. Chemo-characterization and optimization of macro and micro nutrients for exopolysaccharides and mycelia growth in pleurotus tuberregium (RUMPH, EX FR)
Abstract Exoploysaccharides are potential nutraceutic, probiotic, phamarceutic and cosmesceutic natural products in fungi. Pleurotus tuberregium is an underutilized tropical fungus that is useful as food with recent reports of pharmacological activities. The present study evaluated and characterized environmental conditions and nutrients for optimal P. tube
Food Sci. Technol. Publicado em: 11/04/2019
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3. The characterization and comparison of exopolysaccharides from two benthic diatoms with different biofilm formation abilities
ABSTRACT Exopolysaccharide (EPS) of two benthic diatoms, Amphora sp. and Stauroneis sp., with different biofilm formation abilities were investigated. The ratio of suspension-cells/biofilm-cells was employed to indicate the diatom biofilm formation abilities. The soluble EPS from the supernatant of whole culture, tightly bound EPS from floating cells, loosel
An. Acad. Bras. Ciênc.. Publicado em: 2018-04
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4. Tolerance to and Accumulation of Cadmium, Copper, and Zinc by Cupriavidus necator
ABSTRACT Preliminary results of in vitro experiments with multicontaminated soils and solid media indicated that nodulating diazotrophic bacteria of the genus Cupriavidus are promising for the remediation of contaminated environments due to their symbiosis with legumes and metal tolerance. Thus, strains of Cupriavidus spp. (LMG 19424T, UFLA 01-659, UFLA 01-6
Rev. Bras. Ciênc. Solo. Publicado em: 08/03/2018
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5. Efficient production of pullulan by Aureobasidium pullulans grown on mixtures of potato starch hydrolysate and sucrose
Abstract Pullulan is a natural exopolysaccharide with many useful characteristics. However, pullulan is more costly than other exopolysaccharides, which limits its effective application. The purpose of this study was to adopt a novel mixed-sugar strategy for maximizing pullulan production, mainly using potato starch hydrolysate as a low-cost substrate for li
Braz. J. Microbiol.. Publicado em: 2017-03
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6. Exopolysaccharide dispelled by calcium hydroxide with volatile vehicles related to bactericidal effect for root canal medication
ABSTRACT Objective: Enterococcus faecalis is the dominant microbial species responsible for persistent apical periodontitis with ability to deeply penetrate into the dentin. Exopolysaccharides (EPS) contribute to the pathogenicity and antibiotic resistance of E. faecalis. Our aim was to investigate the antimicrobial activity of calcium hydroxide (CH), camph
J. Appl. Oral Sci.. Publicado em: 2016-10
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7. Effects of cigarette smoke condensate on the production and characterization of exopolysaccharides by Bifidobacterium
O objetivo do estudo foi investigar o efeito da fumaça de cigarro sobre a produção e caracterização de exopolissacarídeos (EPSs) produzidos por Bifidobacterium. Os cigarros de marca Shanhua (nicotina: 1,1 mg, alcatrão: 11 mg) foram utilizados para preparar um condensado de fumaça de cigarro (CSC). A cepa padrão de Bifidobacterium animalis foi cultiv
An. Acad. Bras. Ciênc.. Publicado em: 09/06/2015
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8. Halotolerant bacteria in the São Paulo Zoo composting process and their hydrolases and bioproducts
Halophilic microorganisms are able to grow in the presence of salt and are also excellent source of enzymes and biotechnological products, such as exopolysaccharides (EPSs) and polyhydroxyalkanoates (PHAs). Salt-tolerant bacteria were screened in the Organic Composting Production Unit (OCPU) of São Paulo Zoological Park Foundation, which processes 4 ton/day
Braz. J. Microbiol.. Publicado em: 2015-06
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9. Rheology of spreadable goat cheese made with autochthonous lactic cultures differing in their ability to produce exopolysaccharides
The aim of this study was to compare the rheology of spreadable cheeses elaborated with autochthonous lactic starter cultures without the addition of exopolysaccharide-producing strain in the same starter with exopolysaccharide-producing strain. From a rheological standpoint, both samples were characterized as weak viscoelastic gels and pseudoplastic product
Food Sci. Technol. Publicado em: 10/05/2013
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10. Fermentation characteristics in stirred-tank reactor of exopolysaccharides with hypolipidemic activity produced by Pleurotus geesteranus 5#
Neste estudo, foi investigado o efeito hipolipidêmico de exopolissacarideos (EPS) do licor de fermentação de Pleurotus geesteranus 5# em condições de cultura ideais num reator tanque agitado de 5 L. O efeito hipolipidêmico do polissacarídeo, investigado em camundongos com diabetes induzida por estreptozotocina, diminuiu a glicose plasmática, o colest
An. Acad. Bras. Ciênc.. Publicado em: 2013
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11. Activity of extracellular compounds of Pseudomonas sp. against Xanthomonas axonopodis in vitro and bacterial leaf blight in eucalyptus
Bacterial leaf blight caused by Xanthomonas axonopodis is a major problem in the production of eucalyptus seedlings. The pathogen causes leaf lesions that reduce the photosynthetic area and limit plant growth. The objective of this study was to evaluate the antibiotic activity of secondary metabolic compounds of a Pseudomonas sp. against X. axonopodis, follo
Tropical Plant Pathology. Publicado em: 2012-08
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12. Optimization of exopolysaccharides production from a novel strain of Ganoderma lucidum CAU5501 in submerged culture
This study aimed at optimizing the medium of a new Ganoderma lucidum strain CAU5501 to enhance the yield of exopolysaccharides (EPS) and mycelial growth. Firstly, the suitable level of glucose, magnesium, phosphate and C/N ratio was determined by single factor experiment. Subsequently, the optimum concentrations of these medium components were investigated u
Brazilian Journal of Microbiology. Publicado em: 2012-06