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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Degradation of a nonphenolic β-O-4 lignin model dimer by horseradish peroxidase with 1-hydroxybenzotriazole

Journal of Wood Science volume 52, pages 363–366 (2006)Cite this article

Abstract

Nonphenolic β-O-4 lignin substructure model dimer, 1,3-dihydroxy-2-(2,6-dimethoxyphenoxy)-1-(4-ethoxy-3-methoxyphenyl)propane (I) was degraded by horseradish peroxidase (HRP) in the presence of hydrogen peroxide and 1-hydroxybenztriazole (HBT). 4-Ethoxy-3-methoxybenzoic acid (II), 1-(4-ethoxy-3-methoxyphenyl)-3-hydroxypropanone (III), 2,3-dihydroxy-1-(4-ethoxy-3-methoxyphenyl)-1-formyloxypropane (IV), 2,3-dihydroxy-1-(4-ethoxy-3-methoxyphenyl)propanone (V), 1-(4-ethoxy-3-methoxyphenyl)-1,2,3-trihydroxypropane (VI), 1-(4-ethoxy-3-methoxyphenyl)-1,2,3-trihydroxypropane-2,3-cyclic carbonate (VII), and 1-(4-ethoxy-3-methoxyphenyl)-1,2,3-trihydroxypropane-1,2-cyclic carbonate (VIII) were identified as degradation products by gas chromatography-mass spectrometry. These degradation products were qualitatively the same as those of substrate I in the laccase/HBT system, but the yield of the products was apparently different. The products catalyzed by the HRP/H2O2/HBT system contained large amounts of the aromatic ring cleavage products IV, VII, and VIII compared with those catalyzed by the laccase/HBT system, while the amount of Cα-Cβ cleavage product II is relatively low. These results suggest that the role of HBT is not in a simple one-electron transfer between the enzymes and substrates.

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Authors and Affiliations

  1. Department of Forest Resources Science, Faculty of Agriculture, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan

    Shingo Kawai

  2. Department of Environmental Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, 501-1193, Japan

    Yosuke Kobayashi, Makoto Nakagawa & Hideo Ohashi

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  1. Shingo Kawai
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  2. Yosuke Kobayashi
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  3. Makoto Nakagawa
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  4. Hideo Ohashi
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Correspondence to Shingo Kawai.

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Kawai, S., Kobayashi, Y., Nakagawa, M. et al. Degradation of a nonphenolic β-O-4 lignin model dimer by horseradish peroxidase with 1-hydroxybenzotriazole. J Wood Sci 52, 363–366 (2006). https://doi.org/10.1007/s10086-005-0759-y

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  • DOI: https://doi.org/10.1007/s10086-005-0759-y

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