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An overview of the recent developments on fructooligosaccharide production and ...

Dominguez, Ana; Rodrigues, L. R.; Lima, Nelson; Teixeira, J. A.

Over the past years, many researchers have suggested that deficiencies in the diet can lead to disease states and that some diseases can be avoided through an adequate intake of relevant dietary components. Recently, a great interest in dietary modulation of the human gut has been registered. Prebiotics, such as fructooligosaccharides (FOS), play a key role in the improvement of gut microbiota balance and in in...


New improved method for fructooligosaccharides production by Aureobasidium pull...

Dominguez, Ana; Nobre, C.; Rodrigues, L. R.; Peres, A. M.; Torres, D.; Rocha, I.; Lima, Nelson; Teixeira, J. A.

Fructooligosaccharides are prebiotics with numerous health benefits within which the improvement of gut microbiota balance can be highlighted, playing a key role in individual health. In this study, an integrated one-stage method for FOS production via sucrose fermentation by Aureobasidium pullulans was developed and optimized using experimental design tools. Optimization of temperature and agitation speed for ...


Comparison of adsorption equilibrium of fructose, glucose and sucrose on potass...

Nobre, Clarisse; Santos, M.J.; Dominguez, Ana; Torres, Duarte; Rocha, Orlando; Peres, António M.; Rocha, Isabel; Ferreira, Eugénio C.; Teixeira, José A.

Adsorption equilibrium of fructose, glucose and sucrose was evaluated on sulfonated poly(styrene-codivinylbenzene) cation-exchange resins. Two types of resins were used: potassium (K+) gel-type and sodium (Na+) macroporous resins. Influence of the cation and effect of the resin structure on adsorption were studied. The adsorption isotherms were determined by the static method in batch mode for monocomponent and...

Data: 2010   |   Origem: Biblioteca Digital do IPB

Comparison of adsorption equilibrium of fructose, glucose and sucrose on potass...

Nobre, C.; Santos, Maria João; Dominguez, Ana; Torres, D.; Rocha, Orlando; Peres, A. M.; Rocha, I.; Ferreira, E. C.; Teixeira, J. A.; Rodrigues, L. R.

Adsorption equilibrium of fructose, glucose and sucrose was evaluated on sulfonated poly(styrene-co-divinylbenzene) cation-exchange resins. Two types of resins were used: potassium (K+) gel-type and sodium (Na+) macroporous resins. Influence of the cation and effect of the resin structure on adsorption were studied. The adsorption isotherms were determined by the static method in batch mode for mono-component a...


A dynamical model for the fermentative production of fructooligosaccharides

Rocha, Orlando; Nobre, C.; Dominguez, Ana; Torres, D.; Faria, Nuno; Rodrigues, L. R.; Teixeira, J. A.; Ferreira, E. C.; Rocha, I.

In this paper a detailed mathematical model is presented for the fermentative production of fructo-oligosaccharides with Aspergillus sp. The model accounts for hydrolysis and transfructolization reactions, as well as biomass formation and it contains 27 parameters that were determined from experimental data using a System Biology toolbox with the Simulated Annealing method for curve fitting. Several additional ...


Adsorption equilibrium of fructose, glucose and sucrose for cationic resins in ...

Nobre, C.; Santos, Maria João; Dominguez, Ana; Torres, D.; Peres, A. M.; Rocha, I.; Ferreira, E. C.; Rodrigues, L. R.; Teixeira, J. A.


Determination of frutooligosaccharides adsorption parameters using ion-exchange...

Nobre, C.; Dominguez, Ana; Torres, D.; Rocha, O.; Rocha, I.; Teixeira, J. A.; Ferreira, E. C.; Rodrigues, L. R.

Fructooligosaccharides (FOS) are non-digestible sugars that beneficially affect the host by stimulating the growth of specific bacteria in the colon. In large scale, FOS can be produced from sucrose by fermentation. The fermentative broth obtained from this process is a complex mixture of salts and sugars. These sugar mixtures include FOS, namely kestose (GF2), nystose (GF3) and fructo-furanosylnystose (GF4), b...


Optimization of a fructooligosaccharides purification method using activated ch...

Nobre, C.; Dominguez, Ana; Torres, D.; Rocha, Orlando; Rocha, I.; Ferreira, E. C.; Teixeira, J. A.; Rodrigues, L. R.

Fructooligosaccharides (FOS) have gained large commercial interest due to its beneficial properties in the human health as prebiotics. FOS are produced industrially by fermentative processes. However, the result of such fermentations is a complex mixture containing salts and approximately 50% (w/w) of low molecular weight sugars that have to be eliminated. Among other techniques that have been studied, the adso...


Adsorption equilibrium of fructose, glucose, and sucrose for cationic resins in...

Nobre, Clarisse; Santos, M.J.; Dominguez, Ana; Torres, Duarte; Peres, António M.; Rocha, Isabel; Ferreira, Eugénio C.; Rodrigues, Lígia R.

Data: 2009   |   Origem: Biblioteca Digital do IPB

Adsorption equilibrium of fructose, glucose and sucrose for cationic resins in ...

Nobre, Clarisse; Santos, M.J.; Dominguez, Ana; Torres, Duarte; Peres, António M.; Rocha, Isabel; Ferreira, Eugénio C.; Rodrigues, Lígia R.

Separation of glucose from mixtures of fructose and sucrose in molasses is a major challenge in industrial sugar chromatographic separations. The efficiency of a chromatographic process is largely dependent on the adsorbent used. Sulfonated poly(styrene-co-divinylbenzene) (PS-DVB) ion exchange resins are the most frequently used for sugars separation, generally in a cationic form. The cation will complex with t...

Data: 2009   |   Origem: Biblioteca Digital do IPB

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Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia