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Congresso Brasileiro de Microbiologia 2023
 		Resumo: 855-2

855-2

LIPOPEPTIDE PRODUCED BY Absidia cylindrospora var. cylindrospora UCP 1301 USING NATURAL RESOURCES APPLIED TO REMOVAL HYDROCARBONS FROM SAND

Autores:
Rafael de Souza Mendonça (UFRPE - Universidade Federal Rural de Pernambuco, UNICAP - Universidade Católica de Pernambuco) ; Dayana Montero Roríguez (UNICAP - Universidade Católica de Pernambuco) ; Adriana Ferreira de Souza (UNICAP - Universidade Católica de Pernambuco) ; Nathália Sá Alencar do Amaral Marques (UNICAP - Universidade Católica de Pernambuco) ; Thayná Rhomana da Silva Cândido (UFRPE - Universidade Federal Rural de Pernambuco) ; Uiara Maria de Barros Lira Lins (UFRPE - Universidade Federal Rural de Pernambuco) ; Renata Andreia dos Santos (UFRPE - Universidade Federal Rural de Pernambuco) ; Galba Maria de Campos-takaki (UNICAP - Universidade Católica de Pernambuco)

Resumo:
Environmental contamination is due to human activities, standing out the oil industry and its spills that cause damage to marine environments. Petroleum and its derivatives contain a complex mixture of toxic hydrocarbons, making it difficult to remove when in contact with soil and water. In this sense, several researches are being carried out is being carried out for the recovery and remediation of these affected areas. Bioremediation is a promising alternative which uses microorganisms or their metabolites of microorganisms to remove toxic residues from contaminated soils and watersIn this context, this work aimed to the application of biosurfactant produced by Absidia cylindrospora var. cylindrospora UCP 1301, in the removal of petroderivatives from contaminated sand. For this, the production process was carried out using agro-industrial wastes as low-cost substrates. After fermentation, biosurfactant production was confirmed by determination of surface tension and emulsification index. Preliminary characterization of the biomolecule produced was performed and a test for removal of burned engine oil and diesel from beach sand was carried out under laboratory conditions. The isolated biosurfactant showed excellent reduction of water surface tension from 72 to 28 mN/m and emulsification index of 98.6% (burned engine oil). Preliminary biochemical characterization showed that the biomolecule belongs to the class of lipopeptides. The biosurfactant showed excellent effectiveness in removing burned engine oil (93.4%) and diesel (86.4%) impregnated in beach sand. The data suggest that the filamentous fungus has promising potential in the production of biosurfactant using agro-industrial wastes, with application on bioremediation of petroleum-derived pollutants in marine environments.

Palavras-chave:
 Agro-industrial residues, Microbial surfactant, Bioremediation, Hydrophobic pollutants


Agência de fomento:
CAPES (PhD fellowship, Process no. 88887.837208/2023-00), FACEPE and CNPq.