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    Biosurfactant and bioemulsifier as promising molecules produced by Mucor hiemalis isolated from Caatinga soil

    Year: 2020

    Journal: Electron. J. Biotechnol., Volume 47, SEP, page 51–58

    Authors: Silva Ferreira, Isabela Natalia; Rodriguez, Dayana Montero; Campos-Takaki, Galba Maria; da Silva Andrade, Rosileide Fontenele

    Organizations: CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) [314422/2018-8]; CAPES (Coordenacao de Aperfeicoamento de Pessoal de Superior)Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES); FACEPE (Fundacao de Amparo a Ciencia e Tecnologia de Pernambuco)Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco (FACEPE) [APQ-0291-2.12/15]; Nucleus of Research in Environmental Sciences and Biotechnology (NPCIAMB), Catholic University of Pernambuco, Brazil

    Keywords: Amphiphilic compounds; Biosurfactant; Emulsifier; Filamentous fungus; Mucor hiemalis; Promising molecules; Soil; Surface tension; Waste soybean oil

    Background: The present study describes the production of biosurfactant (BS) and emulsifier (BE) by the filamentous fungus Mucor hiemalis UCP 0039, as well as the characterization and stability of the both biomolecules for environmental or industrial applications. Results: Biosurfactants and bioemulsifiers are amphiphilic compounds and are produced as extracellular molecules. The results showed that bioproduct obtained by shaker condition reduced the water surface tension of 72 to 32 mN/m and reached an emulsification index of 96%, while the static cultivation resulted in a biomolecule with a surface tension of 40 mN/m and an emulsification index of 96%, suggesting the production of a biosurfactant and bioemulsifier, respectively. The compounds showed glycolipid nature but the biosurfactant presented cationic charge, while the bioemulsifier, anionic charge. Thus, the results confirmed that M. hiemalis produced two distinct biomolecules under different parameters and in the same culture medium. Conclusions: It is the first time that biosurfactant and emulsifier production has been described in the same medium and under different physical conditions by Mucor hiemalis. Both biomolecules showed thermal stability, as well as have significant effect on the viscosity of hydrophobic compounds, indicating the excellent potential for environmental safety or industrial applications to improve the efficiency of sustainable and economic technologies. (C) 2020 Pontificia Universidad Catalica de Valparaiso. Production and hosting by Elsevier B.V. All rights reserved.
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