Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/98064
Type: Artigo de periódico
Title: Peroxidase-hydrogen Peroxide System Acting On Lignin(1)
Author: Duran N.
Mansilla H.
C.C. Leite L.
Faljoni-Alario A.
Abstract: Horseradish peroxidase (HRP)/H2O2 system, as a possible model of lignolytic enzyme, was evaluated. Aerobic peroxidation of lignin involved chemiluminescence, which arose mainly from recombination of OH radicals and carbonate ions (dissolved CO2). The peroxidase cycle followed by ultraviolet spectrophotometry and by circular dichroism pointed out the HRP-III (Fe III-O2{minus sign, dot below}) species, instead of the free-activated oxygen species, as the most reactive intermediate acting on lignin. HRP-I and HRP-II participate only in the oxidation of the phenolic moiety. The participation of HRP-III in lignin degradation open the way for more detailed studies of biological oxidation by enzyme-bound oxygen species. A general mechanism for lignin degradation by peroxidase was proposed. © 1988.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/0162-0134(88)85022-0
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0345629115&partnerID=40&md5=952d8ece7b2d077073305bfa1bec474f
Date Issue: 1988
Appears in Collections:Unicamp - Artigos e Outros Documentos

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