<b>Reuse of wastewater from pulp industry for the optimization of fungal xylanase production

  • Geisiany Maria de Queiroz-Fernandes Universidade do Sagrado Coração
  • Bruna Letícia Martins Universidade do Sagrado Coração
  • Cynthia Barbosa Rustiguel Universidade de São Paulo

Resumo

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.

 

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Biografia do Autor

Geisiany Maria de Queiroz-Fernandes, Universidade do Sagrado Coração

Programa de Pós-Graduação em Ciência e Tecnologia Ambiental. Pró Reitoria de Pesquisa e Pós-Graduação (PRPPG), Bauru/SP, Brazil

Bruna Letícia Martins, Universidade do Sagrado Coração
Universidade do Sagrado Coração, Pró Reitoria de Pesquisa e Pós-Graduação (PRPPG), Bauru/SP, Brazil
Cynthia Barbosa Rustiguel, Universidade de São Paulo

Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto -USP/SP, Brazil

Publicado
2017-05-03
Como Citar
Queiroz-Fernandes, G. M. de, Martins, B. L., & Rustiguel, C. B. (2017). <b&gt;Reuse of wastewater from pulp industry for the optimization of fungal xylanase production. Acta Scientiarum. Biological Sciences, 39(1), 21-26. https://doi.org/10.4025/actascibiolsci.v39i1.34459
Seção
Biotecnologia

 

0.6
2019CiteScore
 
 
31st percentile
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0.6
2019CiteScore
 
 
31st percentile
Powered by  Scopus