The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
E M Doyle - One of the best experts on this subject based on the ideXlab platform.
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effect of surfactants on Fluoranthene degradation by pseudomonas alcaligenes pa 10
Applied Microbiology and Biotechnology, 2007Co-Authors: Anne Hickey, Linda Gordon, Alan D W Dobson, Catherine T Kelly, E M DoyleAbstract:Two surfactants, Tween 80 and JBR, were investigated for their effect on Fluoranthene degradation by a Pseudomonad. Both surfactants enhanced Fluoranthene degradation by Pseudomonas alcaligenes PA-10 in shake flask culture. This bacterium was capable of utilising the synthetic surfactant and the biosurfactant as growth substrates and the critical micelle concentration of neither compound inhibited bacterial growth. The biosurfactant JBR significantly increased polycyclic aromatic hydrocarbon (PAH) desorption from soil. Inoculation of Fluoranthene-contaminated soil microcosms with P. alcaligenes PA-10 resulted in the removal of significant amounts (45 ± 5%) of the PAH after 28 days compared to an uninoculated control. Addition of the biosurfactant increased the initial rate of Fluoranthene degradation in the inoculated microcosm. The presence of a lower molecular weight PAH, phenanthrene, had a similar effect on the rate of Fluoranthene removal.
Anne Hickey - One of the best experts on this subject based on the ideXlab platform.
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effect of surfactants on Fluoranthene degradation by pseudomonas alcaligenes pa 10
Applied Microbiology and Biotechnology, 2007Co-Authors: Anne Hickey, Linda Gordon, Alan D W Dobson, Catherine T Kelly, E M DoyleAbstract:Two surfactants, Tween 80 and JBR, were investigated for their effect on Fluoranthene degradation by a Pseudomonad. Both surfactants enhanced Fluoranthene degradation by Pseudomonas alcaligenes PA-10 in shake flask culture. This bacterium was capable of utilising the synthetic surfactant and the biosurfactant as growth substrates and the critical micelle concentration of neither compound inhibited bacterial growth. The biosurfactant JBR significantly increased polycyclic aromatic hydrocarbon (PAH) desorption from soil. Inoculation of Fluoranthene-contaminated soil microcosms with P. alcaligenes PA-10 resulted in the removal of significant amounts (45 ± 5%) of the PAH after 28 days compared to an uninoculated control. Addition of the biosurfactant increased the initial rate of Fluoranthene degradation in the inoculated microcosm. The presence of a lower molecular weight PAH, phenanthrene, had a similar effect on the rate of Fluoranthene removal.
Hiroshi Sakugawa - One of the best experts on this subject based on the ideXlab platform.
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negative effects of Fluoranthene on the ecophysiology of tomato plants lycopersicon esculentum mill Fluoranthene mists negatively affected tomato plants
Chemosphere, 2010Co-Authors: Ilemobayo Oguntimehin, Fawzy Eissa, Hiroshi SakugawaAbstract:Abstract Cherry tomato plants ( Lycopersicon esculentum Mill) were sprayed with Fluoranthene and mixture of Fluoranthene and mannitol solutions for 30 d. The exposure was carried out in growth chambers in field conditions, and the air was filtered through charcoal filters to remove atmospheric contaminants. Plants were sprayed with 10 μM Fluoranthene as mist until they reached the fruiting stage, and the eco-physiological parameters were measured to determine the effects of the treatments. We measured CO 2 uptake and water vapour exchange, chlorophyll fluorescence, leaf pigment contents, visual symptoms and biomass allocation. Fluoranthene which was deposited as mist onto leaves negatively affected both growth and the quality of tomato plants, while other treatments did not. The photosynthetic rate measured at saturated irradiance was approximately 37% lower in Fluoranthene-treated plants compared with the control group. Other variables, such as stomata conductance, the photochemical efficiency of PSII in the dark, Chl a , Chl b , and the total chlorophyll contents of the tomato leaves were significantly reduced in the Fluoranthene-treated plants. Tomato plants treated with Fluoranthene showed severe visible injury symptoms on the foliage during the exposure period. Mannitol (a reactive oxygen scavenger) mitigated effects of Fluoranthene; thus, reactive oxygen species generated through Fluoranthene may be responsible for the damaged tomato plants. It is possible for Fluoranthene to decrease the aesthetic and hence the economic value of this valuable crop plant.
Alan D W Dobson - One of the best experts on this subject based on the ideXlab platform.
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Fluoranthene degradation in Pseudomonas alcaligenes PA-10
Biodegradation, 2020Co-Authors: Linda Gordon, Alan D W DobsonAbstract:Pseudomonas alcaligenes strain PA-10 degrades thefour-ring polycyclic aromatic hydrocarbon Fluoranthene, co-metabolically. HPLC analysisof the growth medium identified four intermediates, 9-fluorenone-1-carboxylicacid; 9-hydroxy-1-fluorene carboxylic acid; 9-fluorenone and 9-fluorenol, formedduring Fluoranthene degradation. Pre-exposure of PA-10 to 9-fluorenone-1-carboxylic acidand 9-hydroxy-1-fluorene-carboxylic acid resulted inincreases in Fluoranthene removal, while pre-exposure to9-fluorenone and 9-fluorenol resulted in a decrease inFluoranthene degradation. The rate of indole transformation was similarly affected by pre-exposureto these metabolic intermediates, indicating a link between Fluoranthenedegradation and indigo formation in this strain.
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effect of surfactants on Fluoranthene degradation by pseudomonas alcaligenes pa 10
Applied Microbiology and Biotechnology, 2007Co-Authors: Anne Hickey, Linda Gordon, Alan D W Dobson, Catherine T Kelly, E M DoyleAbstract:Two surfactants, Tween 80 and JBR, were investigated for their effect on Fluoranthene degradation by a Pseudomonad. Both surfactants enhanced Fluoranthene degradation by Pseudomonas alcaligenes PA-10 in shake flask culture. This bacterium was capable of utilising the synthetic surfactant and the biosurfactant as growth substrates and the critical micelle concentration of neither compound inhibited bacterial growth. The biosurfactant JBR significantly increased polycyclic aromatic hydrocarbon (PAH) desorption from soil. Inoculation of Fluoranthene-contaminated soil microcosms with P. alcaligenes PA-10 resulted in the removal of significant amounts (45 ± 5%) of the PAH after 28 days compared to an uninoculated control. Addition of the biosurfactant increased the initial rate of Fluoranthene degradation in the inoculated microcosm. The presence of a lower molecular weight PAH, phenanthrene, had a similar effect on the rate of Fluoranthene removal.
Linda Gordon - One of the best experts on this subject based on the ideXlab platform.
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Fluoranthene degradation in Pseudomonas alcaligenes PA-10
Biodegradation, 2020Co-Authors: Linda Gordon, Alan D W DobsonAbstract:Pseudomonas alcaligenes strain PA-10 degrades thefour-ring polycyclic aromatic hydrocarbon Fluoranthene, co-metabolically. HPLC analysisof the growth medium identified four intermediates, 9-fluorenone-1-carboxylicacid; 9-hydroxy-1-fluorene carboxylic acid; 9-fluorenone and 9-fluorenol, formedduring Fluoranthene degradation. Pre-exposure of PA-10 to 9-fluorenone-1-carboxylic acidand 9-hydroxy-1-fluorene-carboxylic acid resulted inincreases in Fluoranthene removal, while pre-exposure to9-fluorenone and 9-fluorenol resulted in a decrease inFluoranthene degradation. The rate of indole transformation was similarly affected by pre-exposureto these metabolic intermediates, indicating a link between Fluoranthenedegradation and indigo formation in this strain.
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effect of surfactants on Fluoranthene degradation by pseudomonas alcaligenes pa 10
Applied Microbiology and Biotechnology, 2007Co-Authors: Anne Hickey, Linda Gordon, Alan D W Dobson, Catherine T Kelly, E M DoyleAbstract:Two surfactants, Tween 80 and JBR, were investigated for their effect on Fluoranthene degradation by a Pseudomonad. Both surfactants enhanced Fluoranthene degradation by Pseudomonas alcaligenes PA-10 in shake flask culture. This bacterium was capable of utilising the synthetic surfactant and the biosurfactant as growth substrates and the critical micelle concentration of neither compound inhibited bacterial growth. The biosurfactant JBR significantly increased polycyclic aromatic hydrocarbon (PAH) desorption from soil. Inoculation of Fluoranthene-contaminated soil microcosms with P. alcaligenes PA-10 resulted in the removal of significant amounts (45 ± 5%) of the PAH after 28 days compared to an uninoculated control. Addition of the biosurfactant increased the initial rate of Fluoranthene degradation in the inoculated microcosm. The presence of a lower molecular weight PAH, phenanthrene, had a similar effect on the rate of Fluoranthene removal.