Laccase-mediated oxidative degradation of the herbicide dymron

Tatsuo Maruyama, Chiho Komatsu, Junji Michizoe, Hirofumi Ichinose, Masahiro Goto

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The present study reports the successful and effective degradation of the persistent herbicide dymron catalyzed by the oxidative enzyme laccase in the presence of a reaction mediator (a laccase/mediator system). Using 2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) as the mediator, over 90% of dymron was degraded within 24 h, while the half-life of dymron is 50 days in soil. The results suggested that oxidation of dymron resulted in the production of decomposed compounds with a single aromatic ring. We also found that edible surfactants and a dishwashing detergent were useful to solubilize dymron in an aqueous solution and did not inhibit the oxidative degradation. Degradation proceeded at acidic pH and in a broad range of temperatures (303-353 K). The use of natural mediators also allowed the oxidative degradation of dymron to some extent. In conclusion, we propose the possible use of a laccase/mediator system for the treatment of soils and drainwater contaminated with herbicides.

Original languageEnglish
Pages (from-to)426-430
Number of pages5
JournalBiotechnology Progress
Volume22
Issue number2
DOIs
Publication statusPublished - Mar 1 2006

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Laccase
Herbicides
Soil
Sulfonic Acids
Surface-Active Agents
Detergents
Half-Life
1-(alpha,apha-dimethylbenzyl)-3-(4-methylphenyl)urea
Temperature
Enzymes

All Science Journal Classification (ASJC) codes

  • Biotechnology

Cite this

Laccase-mediated oxidative degradation of the herbicide dymron. / Maruyama, Tatsuo; Komatsu, Chiho; Michizoe, Junji; Ichinose, Hirofumi; Goto, Masahiro.

In: Biotechnology Progress, Vol. 22, No. 2, 01.03.2006, p. 426-430.

Research output: Contribution to journalArticle

Maruyama, Tatsuo ; Komatsu, Chiho ; Michizoe, Junji ; Ichinose, Hirofumi ; Goto, Masahiro. / Laccase-mediated oxidative degradation of the herbicide dymron. In: Biotechnology Progress. 2006 ; Vol. 22, No. 2. pp. 426-430.
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