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| PEREIRA,ANDRESSA R.; SEDENHO,GRAZIELA C.; SOUZA,JOÃO C. P. DE; CRESPILHO,FRANK N.. |
| ABSTRACT Bioelectrochemistry can be defined as a branch of Chemical Science concerned with electron-proton transfer and transport involving biomolecules, as well as electrode reactions of redox enzymes. The bioelectrochemical reactions and system have direct impact in biotechnological development, in medical devices designing, in the behavior of DNA-protein complexes, in green-energy and bioenergy concepts, and make it possible an understanding of metabolism of all living organisms (e.g. humans) where biomolecules are integral to health and proper functioning. In the last years, many researchers have dedicated itself to study different redox enzymes by using electrochemistry, aiming to understand their mechanisms and to develop promising bioanodes and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioelectrocatalysis; Biofuel cells; Bioelectrochemistry; Immobilization; Protein-electrode interactions; Redox enzymes. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000200825 |
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| La Rotta,Camilo E; D'Elia,Eliane; Bon,Elba P.S. |
| Chloroperoxidase (CPO) from Caldariomyces fumago catalyses the oxidation of several chlorinated phenols (CP) commonly found in industrial waste waters in the presence of hydrogen peroxide. This study compares the direct addition of hydrogen peroxide (DA) with its continuous electrogeneration (EG) during the enzymatic oxidation of CP. Reaction mixtures were studied containing chemically modified CPO, hydrogen peroxide and the phenolic substrates: phenol (P), 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP) and pentachlorophenol (PCP), in 100 mM sodium-potassium phosphate buffer pH 6.0, at 25ºC. Results were compared in terms of residual phenol concentration (oxidation efficiency), precipitate formation (removal) and... |
| Tipo: Journal article |
Palavras-chave: Biodegradation; Bioelectrochemistry; Caldariomyces fumago; Chlorinated phenols; Chloroperoxidase; Hydrogen peroxide electrogeneration. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100003 |
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| La Rotta Hernández,Camilo Enrique; Werberich,Diogo Simon; Mattos,Marcio Contrucci Saraiva de; D'Elia,Eliane. |
| Horse radish peroxidase (HRP) from Armoracia rusticana catalyses the oxidation of (R)-limonene into the oxidized derivatives carveol and carvone. This study compares the direct addition (DA) of hydrogen peroxide with its continuous electrogeneration (EG) during the enzymatic oxidation of (R)-limonene. Reaction mixtures containing HRP, (R)-limonene as substrate, and hydrogen peroxide, added directly or electrogenerated, in 100 mM sodium-potassium phosphate buffer pH 7.0, at 25ºC were studied. Two electrochemical systems for the hydrogen peroxide electrogeneration were evaluated, both containing as auxiliary electrode (AE) a platinum wire and saturated calomel electrode (SCE) as reference. Reticulated vitreous carbon foam (RVCF) and an electrolytic copper... |
| Tipo: Journal article |
Palavras-chave: Armoracia rusticana; Bioelectrochemistry; Carveol; Carvone; Horse-radish peroxidase; Hydrogen peroxide electrogeneration; (R)-limonene. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000400006 |
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