Introducción. La intolerancia a la lactosa es una afección frecuente en pediatría, cuyo diagnóstico erróneo conlleva morbilidad. El objetivo primario del estudio fue evaluar la utilidad del incremento del perímetro abdominal durante la prueba de hidrógeno espirado como predictor de intolerancia a ...
Background: An effective single culture with high glycerol consumption and hydrogen and ethanol coproduction yield is still in demand. A locally isolated glycerol-consuming Escherichia coli SS1 was found to produce lower hydrogen levels under optimized ethanol production conditions. Molecular approach wa...
Escherichia coli/metabolismo,
Etanol/metabolismo,
Hidrógeno/metabolismo,
Escherichia coli/enzimología,
Hidrogenasas/metabolismo,
Hidrogenasas/genética,
Concentración de Iones de Hidrógeno,
Clostridium/metabolismo,
Biotecnología,
Fermentación,
Proteínas Recombinantes,
Glicerol,
Escherichia coli/genética,
Clostridium/genética
ABSTRACT Background Primary hypolactasia is a common condition where a reduced lactase activity in the intestinal mucosa is present. The presence of abdominal symptoms due to poor absorption of lactose, which are present in some cases, is a characteristic of lactose intolerance. , Objective Evaluate th...
The buffering effect of acetate on hydrogen production during glucose fermentation by Ethanoligenens harbinense B49 was investigated compared to phosphate, a widely used fermentative hydrogen production buffer. Specific concentrations of sodium acetate or phosphate were added to batch cultures, and the e...
Background In this study, the detection of nifH and nifD by a polymerase chain reaction assay was used to screen the potential photosynthetic bacteria capable of producing hydrogen from five different environmental sources. Efficiency of photo-hydrogen production is highly dependent on the culture condit...
Rhodobacter/metabolismo,
Rhodobacter/aislamiento & purificación,
Nitrogenasa/metabolismo,
Oxidorreductasas/metabolismo,
Hidrógeno/metabolismo,
Fermentación,
Reactores Biológicos,
Temperatura,
Concentración de Iones de Hidrógeno,
Nitrogenasa/genética,
Oxidorreductasas/genética,
Reacción en Cadena de la Polimerasa
Introducción: Un 70% de la población general presenta intolerancia a la lactosa; sin embargo, no existen estudios epidemiológicos en la población pediátrica chilena afectada por esta condición. Objetivos: Caracterizar una serie clínica de niños que acude a realizarse el test de aire espirado con ...
BACKGROUND: The development of clean or novel alternative energy has become a global trend that will shape the future of energy. In the present study, 3 microbial strains with different oxygen requirements, including Clostridium acetobutylicum ATCC 824, Enterobacter cloacae ATCC 13047 and Kluyveromyces m...
Fermentación/fisiología,
Hidrógeno/metabolismo,
Consorcios Microbianos/fisiología,
Residuos Industriales,
Ácidos Carboxílicos/metabolismo,
Clostridium acetobutylicum/metabolismo,
Enterobacter cloacae/metabolismo,
Hidrógeno/análisis,
Iones/metabolismo,
Kluyveromyces/metabolismo,
Metales/metabolismo,
Interacciones Microbianas/fisiología,
Almidón/metabolismo,
Aguas Residuales/análisis,
Técnicas de Cocultivo,
Conductividad Eléctrica,
Estudios de Factibilidad,
Energía Renovable,
Factores de Tiempo
Background: Potato (Solanum tuberosum) is one of the most important sources of carbohydrates in human diet. Because of its high carbohydrate levels it recently has also received attention in biohydrogen production. To exploit the natural variation of potato with respect to resistance to major diseases, c...
Background: The production of ethanol by a Consolidated Bioprocessing (CBP) strategy, which simultaneously combines cellulase production, lignocellulosic biomass hydrolysis and fermentation of released sugars to ethanol in one bioreactor, is a promising technology for cost reduction in the biological pro...
Background: The ability for hydrogen production of 13 native strains of Clostridium spp. strains isolated from Colombian soil was evaluated using glycerol substrate. Glycerol to hydrogen conversion was investigated using a batch fermentation reactor and industrial glycerol source (50 g.l-1, pH 7.00). Res...
