18 documents found, page 1 of 2

Optimal control for fermentative production of fructo-oligosaccharides in fed-b...

The production of high-content fructo-oligosaccharides by fermentation in a fed-batch bioreactor is considered. Fed-batch scenario allows to reduce inhibition mechanisms caused by the presence of by-products, such as glucose, while maximizing biomass production. The determination of the feed flow rate profile that maximizes the concentration of fructo-oligosaccharides is performed by resorting to the maximum pr...

Microbial treatment approaches for high-purity fructo-oligosaccharides production

The production of high-purity fructooligosaccharides (FOS), known as prebiotics, by sucrose fermentation using whole microbial cells has been recently explored. At the end of the fermentation process, FOS are present in mixture with small saccharides that are known to have an inhibitory effect of transfructosylating enzymes and to decrease the prebiotic activity of the mixture. This issue can be overcome by red...

Screening and selection of potential carriers to immobilize Aureobasidium pullu...

Fructo-oligosaccharides (FOS) are non-digestible sweeteners with improved functional and technological properties for food and pharmaceutical industry applications. The immobilization of FOS-producing microorganisms whole cells can be used to improve the production of FOS and so, an accurate choice of the carrier is of crucial importance. Here we present a screening and selection of carriers for immobilization ...

Strategies for the production of high-content fructo-oligosaccharides through t...

Fructo-oligosaccharides (FOS) obtained by fermentation of sucrose may be purified at large-scale by continuous chromatography (Simulated Moving Bed: SMB). In order to improve the efficiency of the subsequent SMB purification, the optimization of the fermentative broth composition in salts and sugars was investigated. Fermentations conducted at reduced amount of salts, using Aureobasidium pullulans whole cells, ...

New integrative computational approaches unveil the Saccharomyces cerevisiae ph...

During must fermentation by Saccharomyces cerevisiae strains thousands of volatile aroma compounds are formed. The objective of the present work was to adapt computational approaches to analyze pheno-metabolomic diversity of a S. cerevisiae strain collection with different origins. Phenotypic and genetic characterization together with individual must fermentations were performed, and metabolites relevant to aro...

Production of high-content fructo-oligosaccharides

Fructo-oligosaccharides (FOS) are produced from sucrose by Aureobasidium pullulans in yields between 40-60% (w/w). To increase the amount of FOS it is necessary to remove the small, non-prebiotic sugars, present. Two methods for producing high-purity FOS have been developed: the use of microorganisms able to consume small saccharides; and the use of continuous chromatography to separate sugars: simulated moving...

Application of a high-throughput process analytical technology metabolomics pip...

Metabolomics aims at gathering the maximum amount of metabolic information for a total interpretation of biological systems. A process analytical technology pipeline, combining gas chromatography–mass spectrometry data preprocessing with multivariate analysis, was applied to a Port wine “forced ageing” process under different oxygen saturation regimes at 60 °C. It was found that extreme “forced ageing” conditio...

Pheno-metabolomics characterization of a Saccharomyces cerevisiae strain collec...

The genotypic and pheno-metabolomic landscape of a Saccharomyces cerevisiae str...

Genotypic and pheno-metabolomic characterization of a Saccharomyces cerevisiae ...

The objective of the present work was to gain a deeper understanding of the phenotypic diversity of natural isolates of Saccharomyces cerevisiae, using high-throughput methods in combination with bioanalytical data. A S. cerevisiae strain collection was constituted comprising 187 strains from different geographical origins and technological uses. Some microsatellite alleles and phenotypes were identified as res...