Biosurfactant production from pseudomonas strains isolated in rhizospheric soils from semi-arid area of Bahia, Brazil

Authors

  • Sidnei Cerqueira dos Santos
  • Lidiane Karla Xisto Oliveira
  • Suikinai Nobre Santos
  • Narah Pinheiro Cabral Santos
  • Cristina M. Quintella
  • Paulo Fernando de Almeida
  • Luzimar Gonzaga Fernandez
  • Juan Carlos Rossi-Alva
  • Milton Ricardo de Abreu Roque

DOI:

https://doi.org/10.13102/scb121

Abstract

The aim of this study was to select biosurfactant-producing bacterial strains from soils of plants in the semi-arid region of the state of Bahia, Brazil. The mineral salt medium (MSM) was used as base medium, changes being made in the glucose concentration, temperature, and pH during the optimization process. Two biosurfactant-producing bacterial strains were isolated from the soil of Actinocephalus sp. and belonged to the genus Pseudomonas. The emulsification indexes of these strains rose until 58%. They reduced surface and interfacial tensions of culture medium and crude oil to less than 33 mN/m and 3 mN/m, respectively. This study represented an unprecedented discovery of surfactant activity of the bacterial strains isolated from rhizospheric soils of plants from Northeast Brazilian semi-arid region.

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Published

2012-06-12

How to Cite

dos Santos, S. C., Oliveira, L. K. X., Santos, S. N., Santos, N. P. C., Quintella, C. M., de Almeida, P. F., Fernandez, L. G., Rossi-Alva, J. C., & Roque, M. R. de A. (2012). Biosurfactant production from pseudomonas strains isolated in rhizospheric soils from semi-arid area of Bahia, Brazil. SITIENTIBUS série Ciências Biológicas, 12(1), 157–163. https://doi.org/10.13102/scb121

Issue

Vol. 12 No. 1 (2012)

Section

Artigos

License

Sitientibus série Ciências Biológicas (SCB) is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.