Acetonebutanolethanol fermentation from sugarcane bagasse hydrolysates: utilization of C5 and C6 sugars
Electron. j. biotechnol
;
42: 16-22, Nov. 2019. graf, tab
Artigo
em Inglês
| LILACS
| ID: biblio-1087350
ABSTRACT
Background: Fuels and chemicals from renewable feedstocks have a growing demand, and acetone, butanol and ethanol (ABE) are some relevant examples. These molecules can be produced by the bacterial fermentation process using hydrolysates generated from lignocellulosic biomass as sugarcane bagasse, one of the most abundant sources of lignocellulosic biomass in Brazil. It originates as a residue in mills and distilleries in the production of sugar and ethanol. Results: In the present work, two strategies to generate hydrolysates of sugarcane bagasse were adopted. The fermentation of the first hydrolysate by Clostridium acetobutylicum DSM 6228 resulted in final concentrations of butanol, acetone and ethanol of 6.4, 4.5 and 0.6 g/L, respectively. On the other hand, the second hydrolysate presented better results (averages of 9.1, 5.5 and 0.8 g/L, respectively), even without the need for nutrient supplementation, since key elements were already present in the medium. The productivity (QP) and yield (YP/S) of the solvents with second hydrolysate were 0.5 g/Lâ¢h-1 and 0.4 g/g, respectively. Conclusions: The results described herein open new perspectives for the production of important molecules from residual lignocellulosic biomass for the fuel and chemical industries within the context of second-generation biorefinery.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Acetona
/
Celulose
/
Saccharum
/
Etanol
/
Butanóis
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Electron. j. biotechnol
Assunto da revista:
Biotecnologia
Ano de publicação:
2019
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Federal University of Rio de Janeiro/BR
/
PETROBRAS/BR
/
Protimiza Consulting and Training in Experimental Design and Process Optimization/BR
Similares
MEDLINE
...
LILACS
LIS