Biodegradation of soil-adsorbed polycyclic aromatic hydrocarbons by the white rot fungus Pleurotus ostreatus |
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| Authors: | Facundo J Márquez-Rocha Vanessa Z Hernández-Rodríguez Rafael Vázquez-Duhalt |
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| Institution: | (1) Centro de Investigacion Científica y de Educación Superior de Ensenada, AP 2732 Ensenada, B. C, CP 22830, México;(2) Instituto de Biotecnología, UNAM, AP 510-3 Cuernavaca, Mor., CP 62270, México |
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| Abstract: | The white rot fungus, Pleurotus ostreatus, metabolized four soil adsorbed polycyclic aromatic hydrocarbons: 50% of pyrene (0.1 mg g–1 dry soil), 68% of anthracene and 63% of phenanthrene were mineralized after 21 d. Biodegradation was increased to 75%, 80% and 75%, respectively of the initial concentration when 0.15% Tween 40 was added. Biodegradation of pyrene in the presence of surfactant and H2O2 (1.0 mM) was 90%. Benza]pyrene was also oxidized by Pleurotus ostreatus but it is not mineralized. |
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| Keywords: | biodegradation hydrogen peroxide Pleurotus ostreatus polycyclic aromatic hydrocarbons surfactants |
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