Ethanol production from Dekkera bruxellensis in synthetic media with pentose
| Autor: | Cristina Martini, Carolina Brito Codato, Reinaldo Gaspar Bastos, Sandra Regina Ceccato-Antonini |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Arabinose General Chemical Engineering Pentose Xylose 01 natural sciences 03 medical and health sciences chemistry.chemical_compound 010608 biotechnology Ethanol fuel Hemicellulose Food science arabinose lcsh:Chemical engineering Pichia stipitis chemistry.chemical_classification Dekkera bruxellensis biology xylose lcsh:TP155-156 biology.organism_classification Yeast 030104 developmental biology chemistry Fermentation ethanol |
| Zdroj: | Brazilian Journal of Chemical Engineering, Vol 35, Iss 1, Pp 11-17 Brazilian Journal of Chemical Engineering v.35 n.1 2018 Brazilian Journal of Chemical Engineering Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ Brazilian Journal of Chemical Engineering, Volume: 35, Issue: 1, Pages: 11-17, Published: JAN 2018 |
| ISSN: | 1678-4383 0104-6632 |
| DOI: | 10.1590/0104-6632.20180351s20160475 |
| Popis: | Ethanol is obtained in Brazil from the fermentation of sugarcane, molasses or a mixture of these. Alternatively, it can also be obtained from products composed of cellulose and hemicellulose, called “second generation ethanol - 2G”. The yeast Saccharomyces cerevisiae, commonly applied in industrial ethanol production, is not efficient in the conversion of pentoses, which is present in high amounts in lignocellulosic materials. This study aimed to evaluate the ability of a yeast strain of Dekkera bruxellensis in producing ethanol from synthetic media, containing xylose or arabinose, xylose and glucose as the sole carbon sources. The results indicated that D. bruxellensis was capable of producing ethanol from xylose and arabinose, with ethanol concentration similar for both carbon sources, 1.9 g L-1. For the fermentations performed with xylose and glucose, there was an increase in the concentration of ethanol to 5.9 g L-1, lower than the standard yeast Pichia stipitis (9.3 g L-1), but with similar maximum yield in ethanol (0.9 g g TOC-1). This proves that the yeast D. bruxellensis produced lower amounts of ethanol when compared with P. stipitis, but showed that is capable of fermenting xylose and can be a promising alternative for ethanol conversion from hydrolysates containing glucose and xylose as carbon source. |
| Databáze: | OpenAIRE |
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