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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Alriksson, Björn Cavka, Adnan Jönsson, Leif J. |
| Description | Country affiliation: Sweden Author Affiliation: Alriksson B ( Processum Biorefinery Initiative AB, SE-891 80 Örnsköldsvik, Sweden.) |
| Abstract | Inhibitory lignocellulose hydrolysates were treated with the reducing agents dithionite and sulfite to achieve improved fermentability. Addition of these reducing agents (in the concentration range 5.0-17.5 mM) to enzymatic hydrolysates of spruce wood or sugarcane bagasse improved processes based on both SHF (simultaneous hydrolysis and fermentation) and SSF (simultaneous saccharification and fermentation). The approach was exemplified in ethanolic fermentations with Saccharomyces cerevisiae and by using hydrolysates with sugar concentrations>100 g/L (for SHF) and with 10% dry-matter content (for SSF). In the SHF experiments, treatments with dithionite raised the ethanol productivities of the spruce hydrolysate from 0.2 to 2.5 g×L(-1)×h(-1) and of the bagasse hydrolysate from 0.9 to 3.9 g×L(-1)×h(-1), values even higher than those of fermentations with reference sugar solutions without inhibitors. Benefits of the approach include that the addition of the reducing agent can be made in-situ directly in the fermentation vessel, that the treatment can be performed at a temperature and pH suitable for fermentation, and that the treatment results in dramatically improved fermentability without degradation of fermentable sugars. The many benefits and the simplicity of the approach offer a new way to achieve more efficient manufacture of fermentation products from lignocellulose hydrolysates. |
| ISSN | 09608524 |
| Issue Number | 2 |
| Volume Number | 102 |
| e-ISSN | 18732976 |
| Journal | Bioresource Technology |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2011-01-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cellulase Metabolism Fermentation Drug Effects Lignin Reducing Agents Pharmacology Carbohydrate Metabolism Cellulose Ethanol Analysis Glucose Hydrolysis Oxidation-reduction Picea Saccharum Journal Article Discipline Bioresource |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Medicine Environmental Engineering Renewable Energy, Sustainability and the Environment Bioengineering |
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