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Monorhamnolipids Predominance among Kerosene Degraders
Date
2020-06-01
Author
Aydin, Dilan Camille
İçgen, Bülent
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Rhamnolipids, produced during biodegradation, enhance the removal of hydrocarbons by decreasing the surface tension and increasing the bioavailability. Unlike the synthetic surfactants, rhamnolipids are very promising for bioremediation because of low toxicity and biodegradability. Therefore, the need for eco-friendly and biodegradable surfactants like rhamnolipids for reliable environmental cleanup is increasing. The present work revealed that kerosene degraders were the potential source of rhamnolipids. For this finding, six kerosene degrading bacterial isolates were investigated for their biosurfactant production. All of the isolates namely Pseudomonas plecoglossicida Ag10, Raoultella planticola Ag11, Staphylococcus aureus Ba01, Enterococcus faecalis Cr07, Acinetobacter johnsonii Sb01, and Pantoea agglomerans Sn11 were determined as rhamnolipid producers through oil spreading activity, emulsification index, and microbial adhesion to hydrocarbon tests. Blue agar plate method, thin layer chromatography, and Fourier transform infrared spectroscopy analyses were also performed to characterize the rhamnolipids. The results revealed that mono-rhamnolipids were dominant among kerosene degraders.
Subject Keywords
Environmental Engineering
,
Civil and Structural Engineering
,
General Environmental Science
,
Environmental Chemistry
,
Surface-active agents
,
Surface Tension (water properties)
,
Sustainable development
,
Toxicity
,
Hydrocarbons
,
Biological processes
,
Non-renewable energy
,
Fuels
URI
https://hdl.handle.net/11511/48022
Journal
JOURNAL OF ENVIRONMENTAL ENGINEERING
DOI
https://doi.org/10.1061/(asce)ee.1943-7870.0001710
Collections
Department of Environmental Engineering, Article