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Published on: November 28, 2014
Influence of environmental parameters on pentachlorophenol biotransformation in soil by Lentinula edodes and
B C Okeke1, J E Smith, A Paterson
1Department of Bioscience and Biotechnology, University of Strathclyde, Glasgow, UK.
Abstract:
The influences of temperature, soil moisture potential and initial pH on the biotransformation of pentachlorophenol (PCP) by the lignicolous fungi Lentinula edodes and Phanerochaete chrysosporium were examined. At 10 degrees C, L. edodes was more effective in degrading PCP (P < 0.05) than P. chrysosporium. At 15 degrees C similar results were obtained for the two fungi. The highest levels of degradation occurred for both fungi at 25 degrees C. With P. chrysosporium, the extent of PCP elimination was directly related to soil moisture content and optimal at approximately 47%. With L. edodes, in contrast, the process was inversely related to moisture content and maximal at 26%. The initial soil pH also had a marked influence, and pH 4.0 was optimal for both fungi.
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