Properties and potential application of efficient biosurfactant produced by Pseudomonas sp. KZ1 strain. Issue 2 (28th January 2019)

• Record Type: Journal Article
• Authors: Zdarta, Agata; Smułek, Wojciech; Trzcińska, Anna; Cybulski, Zefiryn; Kaczorek, Ewa
• Is Part Of: Journal of environmental science and health. Volume 54:Issue 2(2019)
• Page Start: 110
• Page End: 117
• Publication Date: 2019-01-28
• Subjects: Biodegradation -- biosurfactant -- cell surface -- Pseudomonas; Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Ecology -- periodicals; Hazardous Substances -- periodicals; 628
• DOI: 10.1080/10934529.2018.1530537
• Languages: English
• ISSNs: 1093-4529

Abstract

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.