Reuse of wastewater from pulp industry for the optimization of fungal xylanase production
| Autor: | Bruna Letícia Martins, Cynthia Barbosa Rustiguel, Geisiany Maria de Queiroz-Fernandes |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
lcsh:QR1-502 Reuse engineering.material 01 natural sciences Biotecnologia General Biochemistry Genetics and Molecular Biology lcsh:Microbiology 010608 biotechnology Pulp industry lcsh:QH301-705.5 biology business.industry Chemistry Pulp (paper) Aspergillus niger agro-industrial waste Factorial experiment Pulp and paper industry biology.organism_classification Biotechnology 010602 entomology enzyme xylanase Wastewater lcsh:Biology (General) factorial design Xylanase engineering Fermentation General Agricultural and Biological Sciences business |
| Zdroj: | Acta Scientiarum. Biological Sciences; Vol 39 No 1 (2017); 21-26 Acta Scientiarum. Biological Sciences; v. 39 n. 1 (2017); 21-26 Acta Scientiarum Biological Sciences Universidade Estadual de Maringá (UEM) instacron:UEM Acta Scientiarum : Biological Sciences, Vol 39, Iss 1, Pp 21-26 (2017) |
| ISSN: | 1807-863X 1679-9283 |
| Popis: | The production of enzymes using agro-industrial waste is a low cost alternative for the reuse of byproducts, with the subsequent impact decrease on the environment. Current analysis produced xylanase using fungus Aspergillus niger , with two types of wastewater generated during the pulp chemical bleaching phase as inducers. Xylanase was produced by submerged liquid fermentation and factorial design optimized parameters that influence production (concentration of wastewater and production period). Initial culture conditions (pH, temperature and agitation) were optimized independently. Alkaline wastewater was more effective than acidic wastewater for the induction of xylanase in optimized conditions: 50% of culture medium, 7-day production, 30°C, pH 6.0 and agitation at 160 rpm. Despite different results, acidic and alkaline wastewaters induced xylanase production by A. niger when employed in concentrations lower than or equal to 50% of culture medium and in the most optimal conditions described above. Alkaline wastewater is highlighted as the most efficient for such production. |
| Databáze: | OpenAIRE |
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