Comparison of SHF and SSF processes from sugar cane bagasse for ethanol production by Saccharomyces cerevisiae

Quimica nova

Martín, Carlos¹  Santos, Julliana Ribeiro Alves dos²  Gouveia, Ester Ribeiro²  Souto-Maior, Ana Maria² 

[1] Universidad de Matanzas, Matanzas, Cuba;Universidade Federal de Pernambuco, Recife, Brasil

关键词: bagasse;    hydrolysis;    fermentation.;   

DOI  :  10.1590/S0100-40422010000400027

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work, fourdifferent process configurations, including three simultaneous saccharificationand fermentation (SSF) schemes and one separate hydrolysis and fermentation(SHF) scheme, were compared, at 8% water-insoluble solids, regarding ethanolproduction from steam-pretreated and alkali-delignified sugar cane bagasse.Two configurations included a 16 h lasting enzymatic presaccharification priorto SSF, and the third one was a classical SSF without presaccharification. Celluloseconversion was higher for the delignified bagasse, and higher in SSF experimentsthan in SHF. The highest cellulose-to-ethanol conversion (around 60% in 24 h)and maximum ethanol volumetric productivities (0.29-0.30 g/L.h) were achievedin the presaccharification-assisted SSF.

【 授权许可】

CC BY