Mimetic Phenoloxidase Activity: Lignin And Chlorolignin Degradation With Low Molecular Weight Chelators

dc.creatorDuran Nelson
dc.creatorSantiago Mariangela
dc.creatorParra Carolina
dc.creatorRodriguez Jaime
dc.date1998
dc.date2015-06-30T15:07:40Z
dc.date2015-11-26T15:20:29Z
dc.date2015-06-30T15:07:40Z
dc.date2015-11-26T15:20:29Z
dc.date.accessioned2018-03-28T22:30:00Z
dc.date.available2018-03-28T22:30:00Z
dc.identifier
dc.identifierProceedings Of The International Conference On Biotechnology In The Pulp And Paper Industry. Cppa, Montreal, Canada, v. 2, n. , p. B163 - B166, 1998.
dc.identifier
dc.identifier
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-0031677274&partnerID=40&md5=983497737437dbeec845ed6128381d27
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/100771
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/100771
dc.identifier2-s2.0-0031677274
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1259997
dc.descriptionThe use of natural chelating agents produced by fungi and bacteria that are called siderophores shows a high affinity constant for metals like iron represents a good alternative for resolving the problems associated with the potential environmental impact produced by synthetic chelators such as EDTA or DTPA. In the study of phenoloxidase activity, the pH, ionic strength (μ), temperature and o-dianisidine conditions were optimized. The properties of four model siderophores, desferrioxamine (DB), acetohydroxamic acid (AHA), 2,3-dihydroxybenzoic acid (DHBA) and 3,4-dihydroxyphenyl acetic acid (DHPAA) were studied. At 2:1 DB/Fe(III), 1:1 AHA/Fe(III), 2:1 DHPAA/Fe(III) and 1:1.5 DHBA/Fe(III), the maximum phenoloxidase activities acting on o-dianisidine were observed. A mechanistic study showed that with these conditions all models of siderophores are able to reduce Fe(III) to Fe(II) followed by ferrozine/ o-phenantroline complexation with Fe(II). Isolated lignin and chlorolignins from Kraft E1 effluents were degraded in the presence of all the metal complexes.
dc.description2
dc.description
dc.descriptionB163
dc.descriptionB166
dc.languageen
dc.publisherCPPA, Montreal, Canada
dc.relationProceedings of the International Conference on Biotechnology in the Pulp and Paper Industry
dc.rightsfechado
dc.sourceScopus
dc.titleMimetic Phenoloxidase Activity: Lignin And Chlorolignin Degradation With Low Molecular Weight Chelators
dc.typeActas de congresos


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