Bioprocess and Biosystems Engineering

, Volume 32, Issue 6, pp 825–835

Production and characterization of lipopeptide biosurfactant by a sponge-associated marine actinomycetes Nocardiopsis alba MSA10

  • R. Gandhimathi
  • G. Seghal Kiran
  • T. A. Hema
  • Joseph Selvin
  • T. Rajeetha Raviji
  • S. Shanmughapriya
Original Paper

DOI: 10.1007/s00449-009-0309-x

Cite this article as:
Gandhimathi, R., Seghal Kiran, G., Hema, T.A. et al. Bioprocess Biosyst Eng (2009) 32: 825. doi:10.1007/s00449-009-0309-x
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Abstract

A sponge-associated marine actinomycetes Nocardiopsis alba MSA10 was screened and evaluated for the production of biosurfactant. Biosurfactant production was confirmed by conventional screening methods including hemolytic activity, drop collapsing test, oil displacement method, lipase production and emulsification index. The active compound was extracted with three solvents including ethyl acetate, diethyl ether and dichloromethane. The diethyl ether extract was fractionated by TLC and semi-preparative HPLC to isolate the pure compound. In TLC, a single discrete spot was obtained with the Rf 0.60 and it was extrapolated as valine. Based on the chemical characterization, the active compound was partially confirmed as lipopeptide. The optimum production was attained at pH 7, temperature 30°C, and 1% salinity with glucose and peptone supplementation as carbon and nitrogen sources, respectively. Considering the biosurfactant production potential of N. alba, the strain could be developed for large-scale production of lipopeptide biosurfactant.

Keywords

BiosurfactantsLipopeptideMarine actinomycetesOptimizationNocardiopsis

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • R. Gandhimathi
    • 1
  • G. Seghal Kiran
    • 2
  • T. A. Hema
    • 1
  • Joseph Selvin
    • 1
  • T. Rajeetha Raviji
    • 1
  • S. Shanmughapriya
    • 1
  1. 1.Department of MicrobiologyBharathidasan UniversityTiruchirappalliIndia
  2. 2.Department of BiotechnologyBharathidasan UniversityTiruchirappalliIndia