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Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase
Background: Tetrabromobisphenol (TBBPA), a flame retardant compound, is considered a ubiquitous pollutant, with potential impact on the environment and human health. Several technologies have been applied to accelerate its degradation and minimize environmental impacts. Due to its aromaticity charac...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950518/ https://www.ncbi.nlm.nih.gov/pubmed/31817344 http://dx.doi.org/10.3390/ijerph16244917 |
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author | García-Zamora, José Luis Santacruz-Vázquez, Verónica Valera-Pérez, Miguel Ángel Moreira, María Teresa Cardenas-Chavez, Diana L. Tapia-Salazar, Mireya Torres, Eduardo |
author_facet | García-Zamora, José Luis Santacruz-Vázquez, Verónica Valera-Pérez, Miguel Ángel Moreira, María Teresa Cardenas-Chavez, Diana L. Tapia-Salazar, Mireya Torres, Eduardo |
author_sort | García-Zamora, José Luis |
collection | PubMed |
description | Background: Tetrabromobisphenol (TBBPA), a flame retardant compound, is considered a ubiquitous pollutant, with potential impact on the environment and human health. Several technologies have been applied to accelerate its degradation and minimize environmental impacts. Due to its aromaticity character, peroxidase enzymes may be employed to carry out its transformation in mild conditions. Therefore, the purpose of this work was to determine the capacity of the enzyme chloroperoxidase (CPO) to oxidize TBBPA in several water samples. Methods: The oxidation capacity of CPO was evaluated in catalytic conditions using water samples from surface and groundwater, as well as effluents from wastewater treatment plants. The biocatalytic performance of CPO was improved due to its immobilization on nanofibers composed of polyvinyl alcohol and chitosan (PVA/chitosan). Results: Free and immobilized CPO were able to transform more than 80% in short reaction times (60 min); producing more biodegradable and less toxic products. Particularly, the immobilized enzyme was catalytically active in a wider range of pH than the free enzyme with the possibility of reusing it up to five times. Conclusions: The biocatalytic oxidation of TBBPA under environmental conditions is highly efficient, even in complex media such as treated effluents of wastewater treatment plants. |
format | Online Article Text |
id | pubmed-6950518 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69505182020-01-16 Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase García-Zamora, José Luis Santacruz-Vázquez, Verónica Valera-Pérez, Miguel Ángel Moreira, María Teresa Cardenas-Chavez, Diana L. Tapia-Salazar, Mireya Torres, Eduardo Int J Environ Res Public Health Article Background: Tetrabromobisphenol (TBBPA), a flame retardant compound, is considered a ubiquitous pollutant, with potential impact on the environment and human health. Several technologies have been applied to accelerate its degradation and minimize environmental impacts. Due to its aromaticity character, peroxidase enzymes may be employed to carry out its transformation in mild conditions. Therefore, the purpose of this work was to determine the capacity of the enzyme chloroperoxidase (CPO) to oxidize TBBPA in several water samples. Methods: The oxidation capacity of CPO was evaluated in catalytic conditions using water samples from surface and groundwater, as well as effluents from wastewater treatment plants. The biocatalytic performance of CPO was improved due to its immobilization on nanofibers composed of polyvinyl alcohol and chitosan (PVA/chitosan). Results: Free and immobilized CPO were able to transform more than 80% in short reaction times (60 min); producing more biodegradable and less toxic products. Particularly, the immobilized enzyme was catalytically active in a wider range of pH than the free enzyme with the possibility of reusing it up to five times. Conclusions: The biocatalytic oxidation of TBBPA under environmental conditions is highly efficient, even in complex media such as treated effluents of wastewater treatment plants. MDPI 2019-12-05 2019-12 /pmc/articles/PMC6950518/ /pubmed/31817344 http://dx.doi.org/10.3390/ijerph16244917 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article García-Zamora, José Luis Santacruz-Vázquez, Verónica Valera-Pérez, Miguel Ángel Moreira, María Teresa Cardenas-Chavez, Diana L. Tapia-Salazar, Mireya Torres, Eduardo Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title | Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title_full | Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title_fullStr | Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title_full_unstemmed | Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title_short | Oxidation of Flame Retardant Tetrabromobisphenol A by a Biocatalytic Nanofiber of Chloroperoxidase |
title_sort | oxidation of flame retardant tetrabromobisphenol a by a biocatalytic nanofiber of chloroperoxidase |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6950518/ https://www.ncbi.nlm.nih.gov/pubmed/31817344 http://dx.doi.org/10.3390/ijerph16244917 |
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