1
|
Petra de Oliveira Barros V, Macedo Silva JR, Maciel Melo VM, Terceiro PS, Nunes de Oliveira I, Duarte de Freitas J, Francisco da Silva Moura O, Xavier de Araújo-Júnior J, Erlanny da Silva Rodrigues E, Maraschin M, Thompson FL, Landell MF. Biosurfactants production by marine yeasts isolated from zoanthids and characterization of an emulsifier produced by Yarrowia lipolytica LMS 24B. Chemosphere 2024; 355:141807. [PMID: 38552803 DOI: 10.1016/j.chemosphere.2024.141807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/07/2024] [Accepted: 03/24/2024] [Indexed: 04/01/2024]
Abstract
The present study investigates the potential for biosurfactant production of 19 marine yeast species obtained from zoanthids. Using the emulsification index test to screen the samples produced by the marine yeasts, we verified that five isolates exhibited an emulsification index ≥50%. Additional tests were performed on such isolates, including oil displacement, drop collapse, Parafilm M assay, and surface tension measurement. The tolerance of produced biosurfactants for environmental conditions was also analyzed, especially considering the media's temperature, pH, and salinity. Moreover, the surfactant's ability to emulsify different hydrocarbon sources and to metabolize kerosene as the sole carbon source was evaluated in vitro. Our results demonstrate that yeast biosurfactants can emulsify hydrocarbon sources under different physicochemical conditions and metabolize kerosene as a carbon source. Considering the Yarrowia lipolytica LMS 24B as the yeast model for biosurfactant production from the cell's wall biomass, emulsification indexes of 61.2% were obtained, even at a high temperature of 120 °C. Furthermore, the Fourier-transform middle infrared spectroscopy (FTIR) analysis of the biosurfactant's chemical composition revealed the presence of distinct functional groups assigned to a glycoprotein complex. Considering the status of developing new bioproducts and bioprocesses nowadays, our findings bring a new perspective to biosurfactant production by marine yeasts, especially Y. lipolytica LMS 24B. In particular, the presented results validate the relevance of marine environments as valuable sources of genetic resources, i.e., yeast strains capable of metabolizing and emulsifying petroleum derivatives.
Collapse
Affiliation(s)
- Vitória Petra de Oliveira Barros
- Graduate Program in Genetics. Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil; Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió, AL, Brazil
| | | | - Vânia Maria Maciel Melo
- Department of Biology, Microbial Ecology and Biotechnology Laboratory (Lembiotech), Fortaleza, CE, Brazil
| | | | | | | | | | | | | | - Marcelo Maraschin
- Plant Morphogenesis and Biochemistry Laboratory, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | - Melissa Fontes Landell
- Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió, AL, Brazil.
| |
Collapse
|