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- Title
Aspergillus sclerotiorum lipolytic activity and its application in bioremediation of high-fat dairy wastewater environments.
- Authors
de Moura Dickel, Jaíne Daiane; Carvalho, Jéssyca Ketterine; Silveira, Maruhen Amir Datsch; Menegotto dos Santos, Paulo; Rodrigues, Maria Luiza Fernandes; Fagundes-Klen, Marcia Regina; Rosa, Carlos Augusto; Johann, Susana; Buzanello, Cleide Viviane; da Silva de Lucca, Rosemeire Aparecida; de Oliveira Santos, Ana Raquel; da Rosa, Mauricio Ferreira
- Abstract
Oils and grease (O&G) have low affinity for water and represent a class of pollutants present in the dairy industry. Enzyme-mediated bioremediation using biocatalysts, such as lipases, has shown promising potential in biotechnology, as they are versatile catalysts with high enantioselectivity and regioselectivity and easy availability, being considered a clean technology (white biotechnology). Specially in the treatment of effluents from dairy industries, these enzymes are of particular importance as they specifically hydrolyze O&G. In this context, the objective of this work is to prospect filamentous fungi with the ability to synthesize lipases for application in a high-fat dairy wastewater environment. We identified and characterized the fungal species Aspergillus sclerotiorum as a good lipase producer. Specifically, we observed highest lipolytic activity (20.72 U g−1) after 96 h of fermentation using sunflower seed as substrate. The fungal solid fermented was used in the bioremediation in dairy effluent to reduce O&G. The experiment was done in kinetic from 24 to 168 h and reduced over 90% of the O&G present in the sample after 168 h. Collectively, our work demonstrated the efficiency and applicability of fungal fermented solids in bioremediation and how this process can contribute to a more sustainable wastewater pretreatment, reducing the generation of effluents produced by dairy industries.
- Subjects
BIOREMEDIATION; LIPASES; SEWAGE; WATER purification; SUNFLOWER seeds; ASPERGILLUS; IN situ bioremediation
- Publication
Environmental Science & Pollution Research, 2023, Vol 30, Issue 13, p35517
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-022-24669-z