期刊
BIORESOURCE TECHNOLOGY
卷 102, 期 2, 页码 1521-1527出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.08.003
关键词
Saccharomyces cerevisiae; Glycerol; Fermentation; Adaptation
资金
- Conacyt (Mexico)
Glycerol is an agro-industrial residue generated in high amounts during the biodiesel production. The growing production of biodiesel is creating a worldwide glycerol surplus. Therefore, replacing sugar-based feedstock in bioprocesses by glycerol could be potentially attractive. Saccharomyces cerevisiae is one of the most commonly used microorganisms in the agri-food industry and therefore currently produced in large quantities from sugar-based feedstock. Unfortunately, growth of S. cerevisiae strains on glycerol is very low with reported mu(max) around 0.01 h(-1). This study demonstrates that successive growth of the S. cerevisiae CBS 8066, CEN.PK 113-7D and Ethanol Red on glycerol as sole carbon source considerably improved the mu(max) from 0.01 up to 0.2 h(-1). The adapted strain CBS 8066-FL20 was kinetically characterized during aerobic and oxygen-limited cultivation in bioreactor and the results discussed in terms of their implication for developing glycerol-based S. cerevisiae bioprocesses. (C) 2010 Elsevier Ltd. All rights reserved.
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