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Journal of Industrial Microbiology

, Volume 9, Issue 1, pp 53–61 | Cite as

Detoxification of polycyclic aromatic hydrocarbons by fungi

  • John B. Sutherland
Article

Summary

The polycyclic aromatic hydrocarbons (PAHs) are a group of hazardous environmental pollutants, many of which are acutely toxic, mutagenic, or carcinogenic. A diverse group of fungi, includingAspergillus ochraceus, Cunninghamella elegans, Phanerochaete chrysosporium, Saccharomyces cerevisiae, andSyncephalastrum racemosum, have the ability to oxidize PAHs. The PAHs anthracene, benz[a]anthracene, benzo[a]pyrene, fluoranthene, fluorene, naphthalene, phenanthrene, and pyrene, as well as several methyl-, nitro-, and fluoro-substituted PAHs, are metabolized by one or more of these fungi. Unsubstituted PAHs are oxidized initially to arene oxides,trans-dihydrodiols, phenols, quinones, and tetralones. Phenols andtrans-dihydrodiols may be further metabolized, and thus detoxified, by conjugation with sulfate, glucuronic acid, glucose, or xylose. Although dihydrodiol epoxides and other mutagenic and carcinogenic compounds have been detected as minor fungal metabolites of a few PAHs, most transformations performed by fungi reduce the mutagenicity and thus detoxify the PAHs.

key words

Bioremediation Biotransformation Cytochrome P-450 Metabolism PAHs 

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Copyright information

© Society for Industrial Microbiology 1992

Authors and Affiliations

  • John B. Sutherland
    • 1
  1. 1.Microbiology DivisionNational Center for Toxicological Research, Food and Drug AdministrationJeffersonU.S.A.

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