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Peroxidase catalyzed polymerization of phenol

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Abstract

effect of horseradish peroxidase (HRP) and H2O2 concentrations on the removal efficiency of phenol, defined as the percentage of phenol removed from solution as a function of time, has been investigated. When phenol and H2O2 react with an approximately one-to-one stoichiometry, the phenol is almost completely precipitated within 10 min. The reaction is inhibited at higher concentrations of H2O2. The removal efficiency increases with an increase in the concentration of HRP, but an increase in the time of treatment cannot be used to offset the reduction in removal efficiency at low concentrations of the enzyme, because of inactivation of the enzyme. One molecule of HRP is needed to remove approximately 1100 molecules of phenol when the reaction is conducted at pH 8.0 and at ambient temperature.

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Abbreviations

AH:

deee radical

AH2 :

phenol or aromaticcompound

Compound I:

intermediate oxidized enzymatic form of horseradish peroxidase by H2O2

Compound II:

intermediate oxidized enzymatic form of compound I by phenol

HRP:

Native enzymehorseradish peroxidase

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Authors and Affiliations

  1. Department of Chemical Engineering, Kingsbury Hall, University of New Hampshire, 03824, Durham, NH

    Palligarnai T. Vasudevan & Luting Olivia Li

Authors
  1. Palligarnai T. Vasudevan
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  2. Luting Olivia Li
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Vasudevan, P.T., Li, L.O. Peroxidase catalyzed polymerization of phenol. Appl Biochem Biotechnol 60, 73–82 (1996). https://doi.org/10.1007/BF02788061

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  • DOI: https://doi.org/10.1007/BF02788061

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