Development of a low-cost fermentation medium for ethanol production from biomass |
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| Authors: | K. L. Kadam M. M. Newman |
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| Affiliation: | (1) Biotechnology Center for Fuels and Chemicals, National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, Colorado 80401, USA Tel.: (303) 275 3747; Fax: (303) 275 4449 e-mail: kadamk@tcplink.nrel.gov, US |
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| Abstract: | Nutrient cost is an important aspect in the fermentation of biomass to ethanol. With a goal of developing a cost-effective fermentation medium, several industrially available nutrient sources were evaluated for their effectiveness in the simultaneous saccharification and fermentation of pretreated poplar with Saccharomyces cerevisiae D5A. These studies showed that a low-cost medium containing 0.3% corn steep liquor and 2.5 mM MgSO4 · 7H2O was similar in performance to a nutrient-rich medium. Besides its low cost, this alternative medium consists of components that are available on a commercial scale, thereby making it industrially relevant. Received: 14 August 1996 / Received revision: 7 January 1997 / Accepted: 24 January 1997 |
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