Xilooligossacarídeos (XOS) são reconhecidos pelo seu potencial prebiótico relevante para diversos setores industriais e foram obtidos após o pré-tratamento hidrotérmico da biomassa lignocelulósica residual de galhos de eucalipto. Subprodutos inibitórios são gerados durante o processo de solubi...
Background: Oleaginous yeasts can be grown on different carbon sources, including lignocellulosic hydrolysate containing a mixture of glucose and xylose. However, not all yeast strains can utilize both the sugars for lipogenesis. Therefore, in this study, efforts were made to isolate dual sugar-utilizing...
Trichosporon/metabolismo,
Trichosporon/química,
Lipogénesis,
Lípidos/biosíntesis,
Aceites/química,
Biocombustibles,
Xilosa/aislamiento & purificación,
Glucosa/aislamiento & purificación,
Oryza,
Lignina/metabolismo,
Hidrólisis,
Fermentación
Abstract The biological assimilation of the sugars present in lignocellulosic residues has gained prominence since these residues are the most abundant and economic residues in nature. Thus, the objective of this work was to determine whether the use of D-xylose and L-arabinose as sources of carbon in Sy...
ABSTRACT For the implementation of cellulosic ethanol technology, the maximum use of lignocellulosic materials is important to increase efficiency and to reduce costs. In this context, appropriate use of the pentose released by hemicellulose hydrolysis could improve de economic viability of this process....
Background: Pretreatment of lignocellulosic biomass is essential for using it as a raw material for chemical and biofuel production. This study evaluates the effects of variables in the chemical pretreatment of the Arundo biomass on the glucose and xylose concentrations in the final enzymatic hydrolysate...
ABSTRACT Lignocellulose-derived inhibitors have negative effects on the ethanol fermentation capacity of Saccharomyces cerevisiae. In this study, the effects of eight typical inhibitors, including weak acids, furans, and phenols, on glucose and xylose co-fermentation of the recombinant xylose-fermenting ...
Ácidos/metabolismo,
Ácidos/farmacología,
Fermentación,
Furanos/metabolismo,
Furanos/farmacología,
Glucosa/metabolismo,
Microbiología Industrial,
Fenoles/metabolismo,
Fenoles/farmacología,
Saccharomyces cerevisiae/efectos de los fármacos,
Saccharomyces cerevisiae/genética,
Saccharomyces cerevisiae/crecimiento & desarrollo,
Saccharomyces cerevisiae/metabolismo,
Xilosa/metabolismo
Background: Xylitol is a five carbons polyol with promising medical applications. It can be obtained from chemical D-xylose reduction or by microbial fermentation of Sugarcane Bagasse Hemicellulosic Hydrolysate. For this last process, some microbial inhibitors, as furfural, constitute severe bottleneck. ...
ABSTRACT A new strain of Thermomyces lanuginosus was isolated from the Atlantic Forest biome, and its β-xylosidases optimization in response to agro-industrial residues was performed. Using statistical approach as a strategy for optimization, the induction of β-xylosidases activity was evaluate...
Ascomicetos/enzimología,
Fermentación,
Xilosidasas/metabolismo,
Biomasa,
Activación Enzimática,
Concentración de Iones de Hidrógeno,
Hidrólisis,
Polisacáridos/química,
Polisacáridos/metabolismo,
Especificidad por Sustrato,
Temperatura,
Xilosa/metabolismo,
Zea mays/química
Abstract Sugarcane straw has become an available lignocellulosic biomass since the progressive introduction of the non-burning harvest in Brazil. Besides keeping this biomass in the field, it can be used as a feedstock in thermochemical or biochemical conversion processes. This makes feasible its incorpo...
Candida/metabolismo,
Saccharum/microbiología,
Xilitol/biosíntesis,
Medios de Cultivo/metabolismo,
Fermentación,
Hidrólisis,
Tallos de la Planta/química,
Tallos de la Planta/metabolismo,
Tallos de la Planta/microbiología,
Saccharum/química,
Saccharum/metabolismo,
Xilosa/metabolismo
Background: Biological hydrogen production by microorganisms can be divided into two main categories i.e. photosynthetic organisms that produce hydrogen using light as energy source and anaerobic bacteria that produce hydrogen via dark fermentation. Dark fermentative hydrogen production by anaerobic bact...
Thermoanaerobacterium/metabolismo,
Biocombustibles,
Hidrógeno/metabolismo,
Fermentación,
Xilosa,
Arabinosa,
Thermoanaerobacterium/aislamiento & purificación,
Concentración de Iones de Hidrógeno,
Temperatura,
Carbono/metabolismo,
Glucosa
