One-electron oxidation in the degradation of creosote polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium

Bogan, Bill W.; Lamar, Richard T.

doi:10.1128/aem.61.7.2631-2635.1995

Cited by 142 publications

(44 citation statements)

References 34 publications

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“…Among the three-rings compounds, PHE was the least degraded, regardless of the fungus employed, likely due to its high ionisation potential (IP ¼ 8.03 eV). Contrary to what reported for P. chrysosporium (Bogan and Lamar, 1995;Moen and Hammel, 1994) and for abiotic processes in the presence of oils (Isosaari et al, 2005;Pizzul et al, 2007), no correlation was found between extent of PAH degradation and related IP values. As for the MAs, soybean oil and Tween-80 best supported the degradation activity of I. lacteus and this effect was remarkable towards PHE, ANT, FLT, CHRY, and BaPYR (Table III).…”

Section: Effect Of Mas On Pahs Degradation and Detoxificationcontrasting

confidence: 99%

Mobilizing agents enhance fungal degradation of polycyclic aromatic hydrocarbons and affect diversity of indigenous bacteria in soil

Leonardi

Giubilei

Federici

et al. 2008

Biotech & Bioengineering

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The impact of several mobilizing agents (MAs) (i.e., soybean oil, Tween-20, Tween-80, olive-oil mill wastewaters, and randomly methylated beta-cyclodextrins) on the degradation performances of the white-rot fungi Irpex lacteus and Pleurotus ostreatus was comparatively assessed in a soil spiked with a mixture of seven polycyclic aromatic hydrocarbons (PAHs). Among the different MAs, soybean oil best supported the growth of both fungi that was twice that observed in soil in the absence of MAs. In addition, soybean oil positively affected PAH degradation by both fungi. In this case, the total weight of organic contaminants (TWOC) was lower than that in the absence of MAs (57.7 vs. 201.3 and 26.3 vs. 160.4 mg kg(-1) with I. lacteus and P. ostreatus, respectively). On the other hand, the number of cultivable heterotrophic bacteria was significantly lower in the soil with soybean oil augmented with either one of the two fungi (5.21 vs. 8.71 and 0.22 vs. 0.51 x 10(7) CFU g(-1) soil with I. lacteus and P. ostreatus, respectively). The effect of soybean oil was confirmed by denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified 16S rRNA genes that showed a general decrease in biodiversity. The impact of the other MAs on bacterial diversity was either slightly negative or positive in incubation controls. Both richness and Shannon-Weaver index decreased upon treatment with P. ostreatus. Moreover, with this fungus the composition of the indigenous bacteria was not significantly affected by the type of MA used. By contrast, both indices increased in soil with I. lacteus in the presence of randomly methylated beta-cyclodextrins (39 vs. 33 and 1.43 vs. 1.26, respectively) and soybean oil (19 vs. 5 and 1.01 vs. 0.65, respectively).

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Section: Effect Of Mas On Pahs Degradation and Detoxificationcontrasting

confidence: 99%

Mobilizing agents enhance fungal degradation of polycyclic aromatic hydrocarbons and affect diversity of indigenous bacteria in soil

Leonardi

Giubilei

Federici

et al. 2008

Biotech & Bioengineering

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“…The observed deviation of acenaphthene and fluorene from this pattern is presumably due to their lower molecular weights. The relationship between the disappearance of PAHs and their IPs was in agreement with Bogan's work which showed that one‐electron oxidation occurred in the degradation of PAHs by P chrysosporium 31. Extracellular enzyme activities (LiP and MnP) were assayed at day 3 and day 5.…”

Section: Resultsmentioning

confidence: 99%

Removal of polycyclic aromatic hydrocarbons from soil using surfactant and the white rot fungusPhanerochaete chrysosporium

Zheng

Obbard

2000

J. Chem. Technol. Biotechnol.

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The bioremediation of soil contaminated with polycyclic aromatic hydrocarbons (PAH) is often limited by a low bioavailability of the contaminants. Non-ionic surfactants, such as Tween 80, when above their critical micelle concentration (CMC), can ef®ciently enhance the bioavailability of PAHs in contaminated soil by increasing solubility and dissolution rates. However, disposing of this micelle-contaminated spent washwater can be a major problem. The aim of this study was to combine surfactant soil washing techniques using Tween 80 with the versatile lignin-degrading system of the white rot fungus, Phanerochaete chrysosporium, to bioremediate PAH-contaminated soil. Approximately 85% (w/w) of a total of nine PAHs in an aged (1 month) contaminated soil (total PAH concentration = 403.61 mg g À1 ) could be solubilized in a 2.5% (w/v) Tween 80 solution at a soil/water ratio of 1:10. The washwater was then catabolized by a 3-day-old culture of P chrysosporium under a stationary condition. The disappearance of most PAHs tested (molecular weight ! 178) correlated well with their ionization potentials and 66.4% (w/w) of the total PAHs in washwater with 2.5% (w/v) Tween 80 was catabolized after 11 days of culture. The catabolism was enhanced to 86% (w/w) using a lower concentration of 0.5% (w/v) Tween 80. The initial oxidation rate of total PAHs based on the ®rst 4 days of culture remained almost constant at approximately 1.88 mg cm À3 day À1 when the Tween 80 concentration in washwater was increased from 0.5% to 2.5% (w/v). The combination of soil washing and white rot fungus catabolization of PAH using 2.5% (w/v) Tween 80 eliminated the total PAH concentration in the contaminated soil by 56.4% (w/w) after 11 days. The results suggest that PAHcontaminated soil may be cleansed by using a combination of surfactant soil washing and white rot fungus catabolism.

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“…Chitosan is often used combined with other materials [31] and different forms of chitosan-based material gels, flakes, and powders were applied for the immobilization of many enzymes [32,33]. In recent years, manganese peroxidase (MnP) has attracted the attention of researchers due to its ability to remove various organic contaminants including anthracene [34], phenanthrene [35] as well as polyaromatic hydrocarbons [36]. However, the use of MnP in the industrial applications faces some difficulties such as the low operational stability and the high cost, which can be overcome by the immobilization of the enzyme on the surface of nanocomposites [37].…”

Section: Introductionmentioning

confidence: 99%

Iron Oxide/Chitosan Magnetic Nanocomposite Immobilized Manganese Peroxidase for Decolorization of Textile Wastewater

et al. 2019

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Because of its effectiveness in organic pollutant degradation, manganese peroxidase (MnP) enzyme has attracted significant attention in recent years regarding its use for wastewater treatment. Herein, MnP was extracted from Anthracophyllum discolor fungi and immobilized on the surface of magnetic nanocomposite Fe 3 O 4 /chitosan. The prepared nanocomposite offered a high surface area for MnP immobilization. The influence of several environmental factors like temperature, pH, as well as storage duration on the activity of the extracted enzyme has been studied. Fourier transmission infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray diffraction (XRD), and transmission electron microscope (TEM) techniques were used for the characterization of the prepared MnP/Fe 3 O 4 /chitosan nanocomposite. The efficiencies of the prepared MnP/Fe 3 O 4 /chitosan nanocomposite for the elimination of reactive orange 16 (RO 16) and methylene blue (MB) industrial dyes were determined. According to the results, the immobilization of MnP on Fe 3 O 4 /chitosan nanocomposite increases its capacity to decolorize MB and RO 16. This nanocomposite allowed the removal of 96% ± 2% and 98% ± 2% of MB and RO 16, respectively. The reusability of the synthesized nanocomposite was studied for five successive cycles showing the ability to retain its efficiency even after five cycles. Thus, the prepared MnP/Fe 3 O 4 /chitosan nanocomposite has potential to be a promising material for textile wastewater bioremediation.

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One-electron oxidation in the degradation of creosote polycyclic aromatic hydrocarbons by Phanerochaete chrysosporium

Cited by 142 publications

References 34 publications

Mobilizing agents enhance fungal degradation of polycyclic aromatic hydrocarbons and affect diversity of indigenous bacteria in soil

Mobilizing agents enhance fungal degradation of polycyclic aromatic hydrocarbons and affect diversity of indigenous bacteria in soil

Removal of polycyclic aromatic hydrocarbons from soil using surfactant and the white rot fungusPhanerochaete chrysosporium

Iron Oxide/Chitosan Magnetic Nanocomposite Immobilized Manganese Peroxidase for Decolorization of Textile Wastewater

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