Use of fungal laccase in bioremediation (Comunicazione a convegno)

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Label
  • Use of fungal laccase in bioremediation (Comunicazione a convegno) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
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  • Enrica Donati1, Chiara M. Polcaro1, Emanuela Galli2 (2014)
    Use of fungal laccase in bioremediation
    in 8th International Scientific Conference "THE VITAL NATURE SIGN", Kaunas, 15-16 Maggio
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Enrica Donati1, Chiara M. Polcaro1, Emanuela Galli2 (literal)
Pagina inizio
  • 17 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • 8TH INTERNATIONAL SCIENTIFIC CONFERENCE THE VITAL NATURE SIGN (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • ISSN 2335-8653. (literal)
Note
  • Abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 2 IBAF - CNR 1 IMC - CNR (literal)
Titolo
  • Use of fungal laccase in bioremediation (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autoriVolume
  • Vytautas Magnus University (literal)
Abstract
  • ISSN 2335-8653 17 L-6 USE OF FUNGAL LACCASE IN BIOREMEDIATION Enrica Donati1, Chiara M. Polcaro1, Emanuela Galli2 1-Institute of Chemical Methodologies (IMC), 2- Institute of Agro-Environmental and Forest Biology (IBAF) CNR - Research Area of Rome1, via Salaria Km 29.300 - 00015 Monterotondo (Rome) Italy. Laccases are a class of Cu-containing enzymes able to oxidize polyphenols and many other compounds by oxygen reduction. They are glycoproteins with a MW ranging from 60 to 70 KDa and a E0 between 450 and 800 mV. Ligninolytic white-rot fungi are the most important source of laccases, mainly produced as extracellular enzymes. Their most diffused industrial application is biopulping and biobleaching, in paper and cotton manufacture. Owing to their availability and wide versatility, which can be further extended by the use of \"mediators\", these enzymes are also suitable for \"green\" bioremediation and have demonstrated to degrade efficiently various environmental pollutants. Laccases are able to degrade phenols, among which Personal Care Products as nonylphenol, chloro and nitrophenols. They are also frequently used in degradation of dyes, steroid hormones and antibiotics, aromatic amines and eterocyclic compounds. Polyciclic Aromatic Hydrocarbons degradation usually requires the presence of a mediator, but low molecular weight PAH, as Naphtalene, can be degraded directly. With a mediator addition, laccases are also able to decolorize fungal or bacterial pigments. In order to perform efficient systems for water depuration and improve enzyme stability, many studies about the supporting of laccase on solid materials have been carried out. The enzymes have been included in gels (Eupergit) or chemically linked to acrylonitrile resins or a number of silica based materials (microparticulate silica, magnetic nanomaterials). When a bioremediation system is performed, an equilibrium among efficiency, cost and bioreactor practical realization must be considered. So laccases have also been adsorbed or chemically linked to natural materials such as spent grain, chitosan, diatomaceous biosilica, celite and zeolite (clinoptilolite). Some applications of free and immobilized laccase in the bioremediation of different compounds will be reported. (literal)
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