scholarly journals Involvement of the Ligninolytic System of White-Rot and Litter-Decomposing Fungi in the Degradation of Polycyclic Aromatic Hydrocarbons

2012 ◽  
Vol 2012 ◽  
pp. 1-20 ◽  
Author(s):  
Natalia N. Pozdnyakova
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soils ◽  
Environmental Concern ◽  
Ligninolytic Enzymes ◽  
White Rot ◽  
Submerged Cultivation ◽  
Carcinogenic Activity ◽  
Pah Degradation ◽  
Polycyclic Aromatic

Polycyclic aromatic hydrocarbons (PAHs) are natural and anthropogenic aromatic hydrocarbons with two or more fused benzene rings. Because of their ubiquitous occurrence, recalcitrance, bioaccumulation potential and carcinogenic activity, PAHs are a significant environmental concern. Ligninolytic fungi, such as Phanerochaete chrysosporium, Bjerkandera adusta, and Pleurotus ostreatus, have the capacity of PAH degradation. The enzymes involved in the degradation of PAHs are ligninolytic and include lignin peroxidase, versatile peroxidase, Mn-peroxidase, and laccase. This paper summarizes the data available on PAH degradation by fungi belonging to different ecophysiological groups (white-rot and litter-decomposing fungi) under submerged cultivation and during mycoremediation of PAH-contaminated soils. The role of the ligninolytic enzymes of these fungi in PAH degradation is discussed.

scholarly journals Influence of Cadmium and Mercury on Activities of Ligninolytic Enzymes and Degradation of Polycyclic Aromatic Hydrocarbons by Pleurotus ostreatus in Soil

2000 ◽  
Vol 66 (6) ◽  
pp. 2471-2478 ◽  
Author(s):  
Petr Baldrian ◽  
Carsten in der Wiesche ◽  
Jiří Gabriel ◽  
František Nerud ◽  
František Zadražil
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Pleurotus Ostreatus ◽  
Ligninolytic Enzymes ◽  
Soil Microflora ◽  
Polycyclic Aromatic Compounds ◽  
White Rot ◽  
White Rot Fungus ◽  
Aromatic Rings ◽  
Polycyclic Aromatic

ABSTRACT The white-rot fungus Pleurotus ostreatus was able to degrade the polycyclic aromatic hydrocarbons (PAHs) benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, dibenzo[a,h]anthracene, and benzo[ghi]perylene in nonsterile soil both in the presence and in the absence of cadmium and mercury. During 15 weeks of incubation, recovery of individual compounds was 16 to 69% in soil without additional metal. While soil microflora contributed mostly to degradation of pyrene (82%) and benzo[a]anthracene (41%), the fungus enhanced the disappearance of less-soluble polycyclic aromatic compounds containing five or six aromatic rings. Although the heavy metals in the soil affected the activity of ligninolytic enzymes produced by the fungus (laccase and Mn-dependent peroxidase), no decrease in PAH degradation was found in soil containing Cd or Hg at 10 to 100 ppm. In the presence of cadmium at 500 ppm in soil, degradation of PAHs by soil microflora was not affected whereas the contribution of fungus was negligible, probably due to the absence of Mn-dependent peroxidase activity. In the presence of Hg at 50 to 100 ppm or Cd at 100 to 500 ppm, the extent of soil colonization by the fungus was limited.

Effect of nanomaterials on remediation of polycyclic aromatic hydrocarbons-contaminated soils: A review

2021 ◽  
Vol 284 ◽  
pp. 112023
Author(s):  
Mahmoud Mazarji ◽  
Tatiana Minkina ◽  
Svetlana Sushkova ◽  
Saglara Mandzhieva ◽  
Gholamreza Nabi Bidhendi ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soils ◽  
Polycyclic Aromatic

Bioaugmentation strategy to enhance polycyclic aromatic hydrocarbons anaerobic biodegradation in contaminated soils

Chemosphere ◽  
2021 ◽  
Vol 275 ◽  
pp. 130091
Author(s):  
Alberto Ferraro ◽  
Giulia Massini ◽  
Valentina Mazzurco Miritana ◽  
Antonio Panico ◽  
Ludovico Pontoni ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Contaminated Soils ◽  
Anaerobic Biodegradation ◽  
Polycyclic Aromatic

scholarly journals Application of Programmed Temperature Vaporization Large Volume Injection Gas Chromatography (PTV-LVI-GC) to the Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) in Soils

2017 ◽  
Vol 57 (2) ◽  
Author(s):  
Miguel Ángel Delgadillo-Marín ◽  
Araceli Peña-Álvarez ◽  
Mario Villalobos Villalobos
Keyword(s):  
Gas Chromatography ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Large Volume ◽  
Contaminated Soils ◽  
Large Volume Injection ◽  
Method Performance ◽  
Flame Ionization ◽  
Polycyclic Aromatic ◽  
Programmed Temperature Vaporization

A sensitive, selective and robust method was developed to quantify low levels of polycyclic aromatic hydrocarbons (PAHs) in soils by means of Programmed Temperature Vaporization - Large Volume Injection (PTV-LVI) coupled to gas chromatography with flame ionization detection. Optimal vent pressure and flux at the PTV inlet of the GC system were determined by comparison of peak areas obtained from injection of a standard PAHs mixture at different conditions. Assessment of method performance was carried out with home-made standards prepared by spiking three non-PAH contaminated soils that contained 1.8%, 4.6% and 25% natural organic matter (NOM), with mixtures of six different PAHs at low concentration levels. Detection limits between 9 and 12 ng g<sup>-1</sup> and variation coefficients below 11% were determined from analysis of spiked samples of the soil with lowest NOM content. PAHs recoveries typically ranged from 61% to 96% for the three studied soils.

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