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

Química Nova

Santos, Julliana Ribeiro Alves dos¹  Universidad de Matanzas, Matanzas, Cuba¹  Gouveia, Ester Ribeiro¹  Universidade Federal de Pernambuco, Recife, Brasil¹  Souto-Maior, Ana Maria¹  Martín, Carlos¹ 

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, four different process configurations, including three simultaneous saccharification and fermentation (SSF) schemes and one separate hydrolysis and fermentation (SHF) scheme, were compared, at 8% water-insoluble solids, regarding ethanol production from steam-pretreated and alkali-delignified sugar cane bagasse. Two configurations included a 16 h lasting enzymatic presaccharification prior to SSF, and the third one was a classical SSF without presaccharification. Cellulose conversion was higher for the delignified bagasse, and higher in SSF experiments than 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 achieved in the presaccharification-assisted SSF.

【 授权许可】

Unknown