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Simultaneous Saccharification and Ethanol Fermentation of Corn Stover at High Temperature and High Solids Loading by a Thermotolerant Strain Saccharomyces cerevisiae DQ1
- Source :
- BioEnergy Research. 5:1020-1026
- Publication Year :
- 2012
- Publisher :
- Springer Science and Business Media LLC, 2012.
-
Abstract
- The thermotolerant strain Saccharomyces cerevisiae DQ1 was applied to the simultaneous saccharification and fermentation (SSF) at high temperature and high solids loading of the dilute acid-pretreated corn stover in the present study. The SSF using S. cerevisiae DQ1 was operated at 30 % solids loading of the pretreated corn stover with three-step SSF mode and achieved up to ethanol titer of 48 g/L and yield of 65.6 %. S. cerevisiae DQ1 showed strong thermotolerance in both the regular one-step SSF and the three-step SSF with changing temperature in each step. The three-step SSF at 40°C using S. cerevisiae DQ1 tolerated the greater cellulase dosage and solids loading of the pretreated corn stover and resulted in increased ethanol production. The present study provided a practical potential for the future SSF of lignocellulose feedstock at high temperature to reach high ethanol titer.
Details
- ISSN :
- 19391242 and 19391234
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- BioEnergy Research
- Accession number :
- edsair.doi...........22cacf22440e0271e6a81f4b3e1be944