| Autor: |
Lidia Stasiak-Różańska, Stanisław Błażejak, Iwona Gientka, Anna Bzducha-Wróbel, Edyta Lipińska |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Electronic Journal of Biotechnology, Vol 27, Iss C, Pp 44-48 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
0717-3458 |
| DOI: |
10.1016/j.ejbt.2017.03.003 |
| Popis: |
Background: Depletion of petroleum resources has enforced the search for alternative sources of renewable energy. Introduction of biofuels into the market was expected to become a solution to this disadvantageous situation. Attempts to cover fuel demand have, however, caused another severe problem—the waste glycerol generated during biodiesel production at a concentration of approximately 10% w/w. This, in turn, prompted a global search for effective methods of valorization of the waste fraction of glycerol. Results: Utilization of the waste fraction at 48 h with an initial glycerol concentration of 30 g·L-1 and proceeding with 62% efficiency enabled the production of 9 g·L-1 dihydroxyacetone at 50% substrate consumption. The re-use of the immobilized biocatalyst resulted in a similar concentration of dihydroxyacetone (8.7 g·L-1) in two-fold shorter time, with an efficiency of 85% and lower substrate consumption (35%). Conclusions: The method proposed in this work is based on the conversion of waste glycerol to dihydroxyacetone in a reaction catalyzed by immobilized Gluconobacter oxydans cell extract with glycerol dehydrogenase activity, and it could be an effective way to convert waste glycerol into a valuable product. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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