Now showing items 1-6 of 6
Three exopolysaccharides of the beta-(1 -> 6)-D-glucan type and a beta-(1 -> 3;1 -> 6)-D-glucan produced by strains of Botryosphaeria rhodina isolated from rotting tropical fruit
(Carbohydrate Research, 2008-09-22) [Artigo]
Four exopolysaccharides (EPS) obtained from Botryosphaeria rhodina strains isolated from rotting tropical fruit (graviola, mango, pinha, and orange) grown on sucrose were purified on Sepharose CL-4B. Total acid hydrolysis ...
Caracterização química dos géis produzidos pelas bactérias diazotróficas Rhizobium tropici e Mesorhizobium sp.
(Química Nova, 2012-01-01) [Artigo]
The exopolysaccharides with characteristics of gel produced by Rhizobium tropici (EPS RT) and Mesorhizobium sp (EPS MR) are acidic heteropolysaccharide composed mainly of glucose and galactose in a molar ratio of 4:1 and ...
Water at interfaces and its influence on the electrical properties of adsorbed films
(Brazilian Journal of Physics, 2004-03-01) [Artigo]
This paper discusses water at interfaces with emphasis on the electrical properties of adsorbed films. Two issues are addressed, namely adsorption of organic molecules at the air/water interface in Langmuir monolayers and ...
Development of a simple and versatile ultrafiltration system for the fractionation of aquatic humic substances
(Organic Geochemistry, 2012-02-01) [Artigo]
A new fractionation system using membrane ultrafiltration was developed and applied to aqueous extracts of humic substances (HSs). Four polyethersulfone membranes of molecular weight cut offs of 10, 30, 50 and 100 kDa were ...
Propriedades reológicas e efeito da adição de sal na viscosidade de exopolissacarídeos produzidos por bactérias do gênero Rhizobium
(Química Nova, 2010-01-01) [Artigo]
Viscosity of some polysaccharide solutions supports that these molecules can be applied in food sectors. Four exopolysaccharides (R1, R2, R3, R4) produced by different Rhizobium strains were selected. Sugar composition and ...
Produção, propriedades e aplicações de oligossacarídeos
(Semina: Ciências Agrárias, 2011-01-01) [Artigo]
Oligosaccharides participate in the formation of dietary fiber and are mainly used as prebiotic agents. This review presents ways of obtaining these sugars, which can be produced by synthesis (chemical or enzymatic), or ...