Título
Autodisplay of an endo-1,4-β-xylanase from Clostridium cellulovorans in Escherichia coli for xylans degradation
Autor
VICTOR EMMANUEL BALDERAS HERNANDEZ
CARLOS JOEL SALAS MONTANTES
Ana Paulina Barba de la Rosa
Antonio de León Rodríguez
Nivel de Acceso
Acceso Abierto
Identificador alterno
doi: https://doi.org/10.1016/j.enzmictec.2021.109834
Materias
Resumen o descripción
"In this work, the scale-up from 0.01 to 10 L process for the co-production of hydrogen (H2) and ethanol (EtOH) by a genetically engineered Escherichia coli that utilizes hemicellulosic hydrolysates from wheat straw pretreated (WSP) as substrate is presented. Co-production of biofuels was performed through the redirection of carbon-flux to ethanol by deleting ldhA (D-lactate dehydrogenase) and frdD (fumarate reductase) genes in an H2-overproducer strain (E. coli WDH). Resulting strain, E. coli WDH-LF (Delta hycA Delta frdD Delta ldhA), increased up to 70% and 167% the H2 and EtOH production from glucose compared with the parenteral strain. Using WSP as substrate, the yields of H2 and EtOH remained constant at all the evaluated scales. In 10 L bioreactors, the production parameters such as maximum production, production rate and yield were 5,603.0 +/- 233.5 mL H2/L, 41.4 +/- 4.0 mL H2/L/h, 342.7 +/- 14.3 mL H2/g TRS, 7.90 +/- 0.28 g EtOH/L and 0.48 +/- 0.01 g EtOH/g TRS, respectively. The results demonstrate the potential of the co-production of H2 and EtOH at different production scales by the engineered E. coli strain using lignocellulosic biomass as feedstock, such as wheat straw hydrolysates."
Editor
Elsevier
Fecha de publicación
2021
Tipo de publicación
Artículo
Versión de la publicación
Versión enviada
Recurso de información
Formato
application/pdf
Sugerencia de citación
Victor E. Balderas Hernández, Carlos J. Salas-Montantes, Ana P. Barba-De la Rosa, Antonio De Leon-Rodriguez, Autodisplay of an endo-1,4-β-xylanase from Clostridium cellulovorans in Escherichia coli for xylans degradation, Enzyme and Microbial Technology, Volume 149, 2021, 109834, https://doi.org/10.1016/j.enzmictec.2021.109834.
Repositorio Orígen
Repositorio IPICYT
Descargas
164