Characterization of biosurfactants enhancing kerosene degradation

2017-04-04
Aydin, Dilan Camille
İçgen, Bülent
Keroseneis a colorlessflammable hydrocarbon liquidandit is obtained from the fractional distillation of petroleum[1]. Ithas numerous applicationsas fuel for jet engines, heating oil, solvent andinsecticide[2].Because ofgrowing needs of kerosene production and extensive usage may endup with surface water contamination.Due to its hightoxicity to biota, kerosene contaminationrequires remedial action to reduce environmental damage[3].Biodegradation is an effective and eco-friendly methodperformedbyhydrocarbondegrading bacteria.Some ofhydrocarbon degrading bacteria have the ability toproduce extracellular compounds called biosurfactants.Based on their diverse chemical structures,biosurfactants are classified as glycolipids, lipopeptides, phospholipids, fatty acids, neutral lipids, and polysaccharide–protein complexes [4]. Biosurfactants can reducesurface tension and emulsify hydrocarbonsbyenhancingthebioavailability. They also have advantages over chemicalsurfactants byhaving low toxicity, being biodegradable[5]and efficient even at extreme temperature or pHconditions[6].Therefore, characterization of biosurfactants produced by hydrocarbon degraders is of great interest especially in environmental applications [4].This study aimed at determining biosurfactants produced bykerosene degraders. Therefore, previously determined 19 kerosene degraders were primarily screened for their biosurfactant productivity against kerosene. In order to characterizethe type of biosurfactant; Phenol-H2SO4, Biuret, Phosphate and CTAB/Methylene Blue Agar Plate testswere performed.All the isolatesshowedpositive responsestoCTAB/Methylene Blue Agar Plate test, confirming the production rhamnolipid biosurfactants[7]. These results were also justified withFourier Transform Infrared (FTIR) Spectroscopy.

Suggestions

Characterization of biosurfectants enhancing kerosene degradation
Aydın, Dilan Camille; İçgen, Bülent (null; 2017-04-04)
Kerosene is a colorless flammable hydrocarbon liquid and it is obtained from the fractional distillation of petroleum [1]. It has numerous applications as fuel for jet engines, heating oil, solvent and insecticide [2]. Because of growing needs of kerosene production and extensive usage may end up with surface water contamination. Due to its high toxicity to biota, kerosene contamination requires remedial action to reduce environmental damage [3]. Biodegradation is an effective and eco-friendly method perfor...
Synthesis of new mediators for electrochemical nad/nadh recycling
Khalily, Mohammad Aref; Demir, Ayhan Sıtkı; Department of Chemistry (2011)
The synthesis of enantiopure compounds can be achieved by using dehydrogenases as biocatalysts. For instance, reduction reactions of prochiral compounds (ketones, aldehydes and nitriles) into chiral compounds can be achieved by dehydrogenases. These dehydrogenases are cofactor dependent where cofactor is Nicotinamide Adenin Dinucleotite having some restrictions that confines usage of dehydrogenases in organic synthesis including instability of cofactor in water and high cost. Therefore, suitable recycling m...
Synthesis of polymer-supported TEMPO catalysts and their application in the oxidation of various alcohols
Tanyeli, Cihangir (2003-02-17)
We describe the synthesis of a recyclable polymer-supported TEMPO as a catalyst in the Anelli oxidation of various primary alcohols to afford the corresponding aldehydes in good yields. (C) 2003 Elsevier Science Ltd. All rights reserved.
Studies towards green oxidation of alcohols with visible light
Akkaş, Kıvanç; Akdağ, Akın; Department of Chemistry (2014)
Conversion of alcohols to the corresponding carbonyl compounds is one of the key reactions in organic chemistry. For this, numerous methods have been developed. However, most of these methods produce environmentally hazardous waste. With this in mind, an environmentally benign method was attempted to be developed. The idea was borrowed from Dye Sensitized Solar Cells (DSSC); electron relay mechanism in DSSC to be replaced with oxidation of alcohols. First, TiO2 as metal oxide and O2 as electron acceptor wer...
SYNTHESIS OF A NEW ELECTROCHROMIC POLYMER BASED ON TETRAPHENYLETHYLENE CORED TETRAKIS CARBAZOLE COMPLEX AND ITS ELECTROCHROMIC DEVICE APPLICATION
Carbas, Buket Bezgin; Odabas, Serhat; Turksoy, Figen; Tanyeli, Cihangir (2016-03-01)
Poly-1,1,2,2-tetrakis(4-9H-carbazol-9-yl)phenyl)ethene P(TCP) was successfully synthesized by electrochemical oxidation of corresponding monomer, namely, 1,1,2,2-tetrakis(4-9H-carbazol-9-yl)phenyl)ethene (TCP) using dichloromethane as the solvent and tetrabutylammonium hexafluorophosphate (TBAPF(6)) as supporting electrolyte. Spectroelectrochemical properties of P(TCP) were investigated in situ recording the electronic absorption spectra of the polymer film coated on indium-tin oxide (ITO) at various potent...
Citation Formats
D. C. Aydin and B. İçgen, “Characterization of biosurfactants enhancing kerosene degradation,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46023.