Journal
ELECTRONIC JOURNAL OF BIOTECHNOLOGY
Volume 42, Issue -, Pages 16-22Publisher
UNIV CATOLICA DE VALPARAISO
DOI: 10.1016/j.ejbt.2019.10.004
Keywords
Acetone; Bagasse; Biofuels; Butanol; Clostridium acetobutylicum; Ethanol; Fermentation; Hydrolysate; Saccharum; Sugarcane bagasse
Categories
Funding
- Brazilian Petroleum Company (PETROBRAS)
Ask authors/readers for more resources
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 (Q(P)) and yield (Y-P/S) of the solvents with second hydrolysate were 0.5 g/L.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. (C) 2019 Pontificia Universidad Catolica de Valparaiso. Production and hosting by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available