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Novel production of biodispersant by Serratia marcescens UCP 1549 in solid-state fermentation and application for oil spill bioremediation.
Dos Santos, Renata Andreia; Rodríguez, Dayana Montero; Ferreira, Isabela Natália da Silva; de Almeida, Sérgio Mendonça; Takaki, Galba Maria de Campos; de Lima, Marcos Antônio Barbosa.
Afiliação
  • Dos Santos RA; Post-graduation Program in Development of Environmental Processes, Catholic University of Pernambuco Recife, Brazil.
  • Rodríguez DM; Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Brazil.
  • Ferreira INDS; Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Brazil.
  • de Almeida SM; National Post-Doctorate Program (PNPD-CAPES), Post-Graduation Program in Development of Environmental Processes, Catholic University of Pernambuco, Recife, Brazil.
  • Takaki GMC; Nucleus of Research in Environmental Sciences and Biotechnology, Catholic University of Pernambuco, Recife, Brazil.
  • de Lima MAB; Doctorate Northeast Network for Biotechnology, Federal Rural University of Pernambuco, Recife, Brazil.
Environ Technol ; 43(19): 2956-2967, 2022 Aug.
Article em En | MEDLINE | ID: mdl-33775228
Oil spills in aquatic ecosystems cause irreparable damage to marine life and the coastal populations of affected areas. In recent years, chemical dispersants have been extensively used to remedy these impacted ecosystems, although these agents have been increasingly restricted due to their toxic potential. In this context, biosurfactants are emerging as a promising alternative to chemical dispersants, which have some advantages including low toxicity, high biodegradability and good ecological acceptability. Thus, this study aimed to the production of biosurfactant by the bacteria Serratia marcescens UCP 1549 for application as biodispersant. The experiment was carried out using wheat bran as substrate in solid-state fermentation (SSF) as low-cost technology. Biosurfactant production was verified by the reduction of surface tension (28.4 mN/m) and interfacial tension (4.1 mN/m) with n-hexadecane. Also, promising result of emulsification (94%) with burned motor oil was obtained. Acid precipitation yielded 52.0 g/kg dry substrate of biosurfactant, that was identified as an anionic compound of a lipopeptide nature by the Zeta potential and FTIR spectrum, respectively. The biomolecule showed stability under extreme conditions of temperature, pH and salinity, as well as low toxicity against the microcrustacean Artemia salina. In addition, the biosurfactant demonstrated excellent properties to dispersing burned motor oil in water (ODA = 50.24 cm2) and to washing of marine stones (100% removal of burned motor oil). Therefore, these results confirm SSF as a sustainable technology for the production of biodispersant by S. marcescens UCP 1549, promising in the bioremediation of marine ecosystems impacted by petroderivatives.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Petróleo / Poluição por Petróleo Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Petróleo / Poluição por Petróleo Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido