Sugarcane bagasse hydrolysates as feedstock to produce the isopropanol-butanol-ethanol fuel mixture : Effect of lactic acid derived from microbial contamination on Clostridium beijerinckii DSM 6423
Carla Ferreira dos Santos Vieira, Mateus Cavichioli Codogno, Francisco Maugeri Filho, Rubens Maciel Filho, Adriano Pinto Mariano
ARTIGO
Inglês
Enzymatic hydrolysis of lignocellulose under industrial conditions is prone to contamination by lactic acid bacteria, and in this study, a cellulose hydrolysate produced from dilute-acid pretreated sugarcane bagasse contained 13 g/L lactic acid and was used for IBE production by Clostridium...
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Enzymatic hydrolysis of lignocellulose under industrial conditions is prone to contamination by lactic acid bacteria, and in this study, a cellulose hydrolysate produced from dilute-acid pretreated sugarcane bagasse contained 13 g/L lactic acid and was used for IBE production by Clostridium beijerinckii DSM 6423. In fermentation of the cellulose hydrolysate supplemented with sugarcane molasses for nutrients and buffering of the medium (40 g/L total sugar), 92% of the lactic acid was consumed, and the butanol yield was as high as 0.28 (7.9 g/L butanol), suggesting that lactic acid was preferentially metabolized to butanol. When the hydrolysate was mixed with a detoxified bagasse hemicellulose hydrolysate and supplemented with molasses (35 g/L total sugar), the culture was able to exhaust glucose and utilized sucrose (by 38%), xylose (31%), and lactic acid (70%). Overall, this study shows that C. beijerinckii DSM 6423 can co-ferment first- and second-generation sugars while consuming lactic acid
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
2015/20630-4; 2016/23042-9; 2017/07390-0; 2018/23983-3
Fechado
Sugarcane bagasse hydrolysates as feedstock to produce the isopropanol-butanol-ethanol fuel mixture : Effect of lactic acid derived from microbial contamination on Clostridium beijerinckii DSM 6423
Carla Ferreira dos Santos Vieira, Mateus Cavichioli Codogno, Francisco Maugeri Filho, Rubens Maciel Filho, Adriano Pinto Mariano
Sugarcane bagasse hydrolysates as feedstock to produce the isopropanol-butanol-ethanol fuel mixture : Effect of lactic acid derived from microbial contamination on Clostridium beijerinckii DSM 6423
Carla Ferreira dos Santos Vieira, Mateus Cavichioli Codogno, Francisco Maugeri Filho, Rubens Maciel Filho, Adriano Pinto Mariano
Fontes
Bioresource technology (Fonte avulsa) |