期刊
CHEMOSPHERE
卷 55, 期 4, 页码 641-645出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2003.11.035
关键词
methoxychlor; manganese peroxidase; laccase; lignin peroxidase; dechlorination
Ligninolytic enzymes, manganese peroxidase (MnP), laccase, and lignin peroxidase (UP), from white-rot fungi were used in an attempt to treat methoxychlor (MC), a chemical widely used as a pesticide. MnP and laccase in the presence of Tween 80 and 1-hydroxybenzotriazole (HBT), respectively, and LiP were found to degrade MC, and MnP-Tween 80 decreased MC levels by about 65% after a 24-h treatment. MC was converted into methoxychlor olefin (MCO) and 4,4'-dimethoxybenzophenone by MnP-Tween 80 or laccase-HBT treatment. These results indicate that ligninolytic enzymes from white-rot fungi can catalyze the oxidative dechlorination of MC. Moreover, a metabolite MCO was also degraded by MnP-Tween 80 or laccase-HBT treatment. (C) 2003 Elsevier Ltd. All rights reserved.
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