Properties and potential application of efficient biosurfactant produced by Pseudomonas sp. KZ1 strain.
J Environ Sci Health A Tox Hazard Subst Environ Eng
; 54(2): 110-117, 2019.
Article
em En
| MEDLINE
| ID: mdl-30614383
ABSTRACT
Increasing use of biosurfactants has stimulated the search for new and efficient biosurfactant-producing bacterial strains, preferably nonpathogenic ones. The aim of the present study was to characterize a new isolated Pseudomonas sp. KZ1 strain and its exocellular surface active compounds. After examining several mineral media of different compositions, the bioreactor-scale production of biosurfactants under optimum conditions was tested. Then, the composition of the isolated biosurfactants was investigated by Fourier-transform infrared spectroscopy and gas chromatography-mass spectrometry analysis and their surface active properties were characterized by adsorption parameters. The results indicated that the Pseudomonas sp. KZ1 biosurfactant had the critical micelle concentration of 0.12 g L-1 and decreased the surface tension decreased to 31.7 mN m-1. Moreover, the biosurfactant increased the rate of biodegradation of diesel oil by the strains Pseudomonas sp. KZ1, Pseudomonas sp. OS4 and Achromobacter sp. KW1. The obtained biosurfactant showing attractive properties is a promising and much 'greener' alternative in the application for surfactant-enhanced biodegradation of hydrocarbons.
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Base de dados:
MEDLINE
Assunto principal:
Pseudomonas
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Tensoativos
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Biodegradação Ambiental
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article