Techno-economic implications of improved high gravity corn mash fermentation
| Autor: | Psyche Arcenal, Eduardo S. Tirado-Escobar, Michael J.B. Moore, John M. Kavanagh, Kai S. Routledge, Arthur Kollaras, Philip J. L. Bell, Sophia Mandarakas, Drew H. Selwood, Woon Siew Ng, Geoffrey L. Bell, Paul Koutouridis, Paul V. Attfield, Dragana Purkovic, Peter Milic, Ferdinand E. Paras |
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| Rok vydání: | 2011 |
| Předmět: |
Glycerol
Environmental Engineering Saccharomyces cerevisiae Bioengineering Alcohol Acetates Zea mays chemistry.chemical_compound Corn whiskey Food science Sugar Waste Management and Disposal Chromatography High Pressure Liquid Ethanol biology Renewable Energy Sustainability and the Environment business.industry food and beverages General Medicine Models Theoretical biology.organism_classification Yeast Biotechnology Glucose chemistry Biofuels Fermentation business |
| Zdroj: | Bioresource technology. 102(16) |
| ISSN: | 1873-2976 |
| Popis: | The performance of Saccharomyces cerevisiae MBG3964, a strain able to tolerate >18% v/v ethanol, was compared to leading industrial ethanol strain, Fermentis Ethanol Red, under high gravity corn mash fermentation conditions. Compared to the industrial ethanol strain, MBG3964 gave increased alcohol yield (140 g L−1 vs. 126 g L−1), lower residual sugar (4 g L−1 vs. 32 g L−1), and lower glycerol (11 g L−1 vs. 12 g L−1). After 72 h fermentation, MBG3964 showed about 40% viability, whereas the control yeast was only about 3% viable. Based on modelling, the higher ethanol tolerant yeast could increase the profitability of a corn–ethanol plant and help it remain viable through higher production, lower unit heating requirements and extra throughput. A typical 50 M gal y−1 dry mill ethanol plant that sells dried distiller’s grain could potentially increase its profit by nearly $US3.4 M y−1 due solely to the extra yield, and potentially another $US4.1 M y−1 if extra throughput is possible. |
| Databáze: | OpenAIRE |
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