Simultaneous hydrolysis and co-fermentation of whey lactose with wheat for ethanol production
| Autor: | David C. Bressler, Yiqiong Jin, Archana Parashar, Beth Mason |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Co-fermentation animal structures Environmental Engineering Aspergillus oryzae Lactose Bioengineering Saccharomyces cerevisiae 01 natural sciences Kluyveromyces 03 medical and health sciences chemistry.chemical_compound Hydrolysis Bioreactors fluids and secretions Whey 010608 biotechnology Bioreactor Ethanol fuel Food science Waste Management and Disposal Triticum 2. Zero hunger Kluyveromyces lactis Ethanol biology Renewable Energy Sustainability and the Environment digestive oral and skin physiology food and beverages General Medicine beta-Galactosidase biology.organism_classification carbohydrates (lipids) 030104 developmental biology chemistry Fermentation Biotechnology |
| Zdroj: | Bioresource Technology. 221:616-624 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2016.09.063 |
| Popis: | Whey permeate was used as a co-substrate to replace part of the wheat for ethanol production by Saccharomyces cerevisiae . The simultaneous saccharification and fermentation was achieved with β-galactosidase added at the onset of the fermentation to promote whey lactose hydrolysis. Aspergillus oryzae and Kluyveromyces lactis β-galactosidases were two enzymes selected and used in the co-fermentation of wheat and whey permeate for the comparison of their effectiveness on lactose hydrolysis. The possibility of co-fermentations in both STARGEN and jet cooking systems was investigated in 5 L bioreactors. Ethanol yields from the co-fermentations of wheat and whey permeate were evaluated. It was found that A. oryzae β-galactosidase was more efficient for lactose hydrolysis during the co-fermentation and that whey permeate supplementation can contribute to ethanol yield in co-fermentations with wheat. |
| Databáze: | OpenAIRE |
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