Peroxidase-catalyzed oxidation of chlorophenols to polychlorinated dibenzo-p-dioxins and dibenzofurans |
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| Authors: | Lars G Öberg Bo Glas Stephen E Swanson Christoffer Rappe Karl Gustav Paul |
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| Institution: | (1) Department of Medical Biochemistry and Biophysics, University of Umeå, S-90187 Umeå, Sweden;(2) Department of Environmental Chemistry, University of Umeå, S-90187 Umeå, Sweden |
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| Abstract: | Chlorophenols are transformedin vitro to polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/ Fs) by peroxidase-catalyzed oxidations. This is demonstrated with bovine lactoperoxidase as well as horseradish peroxidase, and with 3,4,5- and 2,4,5-trichlorophenol (TrCP). The yield of total PCDD/Fs with lactoperoxidase was 11  g per g 345-TrCP and 10 g per g 245-TrCP, of which 2,3,7,8-substituted PCDD/Fs constituted 8.5 and 2.2 g/g, respectively, corresponding to 0.85 and 1.2 g/g of Nordic TCDD-equivalents. |
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