info:eu-repo/semantics/article
Detecting microorganisms producing surface active compounds in mangrove sediments in São Luís, Maranhão
Registro en:
10.5902/2179460X41209
Autor
Neto, Wallace Ribeiro Nunes
Nunes Sobrinho, Pedro Paulo Barbosa
Pachêco, Wallace Borges
Silva, Darlan Ferreira da
Araujo, Jessica Mayara Mendes
Silva, Maria Raimunda Chagas
Lima, Jose Renato De Oliveira
Monteiro, Joveliane De Melo
Ferreira, Romulo Maia
Monteiro, Andrea de Souza
Institución
Resumen
Mangroves are areas of sediment transitions, favoring the cycling of materials associated with high concentration of microorganisms, presenting vulnerability to anthropogenic actions. The objective of this study was to evaluate the ability of microbiota in mangrove sediments of the Anil River, in the city of São Luís, Maranhão. To produce surface active compounds (SACs), samples were collected according to the EMBRAPA methodology by inoculating them in the Bushnell Haas medium, with carbon sources varying at 3% (v/v). From the production obtained, the supernatants of each culture were submitted to E24 analysis, drop spreading, thermal stability/pressure and pH variation. The SAC-producing species were identified using the MALDI-QTOF MS method. The producing species were identified as Serratia marcescens (2), Ochrobactrum spp. (3). E24 values ranged from 33% to 48% yield, with stability increase after autoclaving of 3% to 6% and of 17% for basic pH ranges, demonstrating the feasibility of using regional microorganisms present in mangroves to produce SACs from different carbon sources, as they have good rates of emulsification and stability to the diverse environmental factors.