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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
07/04/2021 |
Data da última atualização: |
24/11/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MERCANTE, L. A.; IWAKI, L. E. O.; SCAGION, V. P.; OLIVEIRA JUNIOR, O. N.; MATTOSO, L. H. C.; CORREA, D. S. |
Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA; DANIEL SOUZA CORREA, CNPDIA. |
Título: |
Electrochemical detection of bisphenol A by tyrosinase immobilized on electrospun nanofibers decorated with gold nanoparticles. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Electrochem, v. 2, 2021. |
Páginas: |
41 - 49 |
DOI: |
https://doi.org/10.3390/electrochem2010004 |
Idioma: |
Inglês |
Conteúdo: |
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) employed in industrial
processes that causes adverse effects on the environment and human health. Sensitive and inexpensive methods to detect BPA are therefore needed. In this paper, we describe an electrochemical
biosensor for detecting low levels of BPA using polymeric electrospun nanofibers of polyamide
6 (PA6) and poly(allylamine hydrochloride) (PAH) decorated with gold nanoparticles (AuNPs),
namely, PA6/PAH@AuNPs, which were deposited onto a fluorine-doped tin oxide (FTO) substrate.
The hybrid layer was excellent for the immobilization of tyrosinase (Tyr), which allowed an amperometric detection of BPA with a limit of detection of 0.011 µM in the concentration range from 0.05 to
20 µM. Detection was also possible in real water samples with recoveries in the range of 92–105%.
The improved sensing performance is attributed to the combined effect of the large surface area and
porosity of PA6/PAH nanofibers, the catalytic activity of AuNPs, and oxidoreductase ability of Tyr.
These results prov |
Palavras-Chave: |
Biosensor; Electrospinning; Gold nanoparticles; Tyrosinase. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222387/1/P-Electrochemical-Detection-of-Bisphenol-A-by-Tyrosinase.pdf
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Marc: |
LEADER 01847naa a2200253 a 4500 001 2131113 005 2022-11-24 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/electrochem2010004$2DOI 100 1 $aMERCANTE, L. A. 245 $aElectrochemical detection of bisphenol A by tyrosinase immobilized on electrospun nanofibers decorated with gold nanoparticles.$h[electronic resource] 260 $c2021 300 $a41 - 49 520 $aBisphenol A (BPA) is an endocrine-disrupting chemical (EDC) employed in industrial processes that causes adverse effects on the environment and human health. Sensitive and inexpensive methods to detect BPA are therefore needed. In this paper, we describe an electrochemical biosensor for detecting low levels of BPA using polymeric electrospun nanofibers of polyamide 6 (PA6) and poly(allylamine hydrochloride) (PAH) decorated with gold nanoparticles (AuNPs), namely, PA6/PAH@AuNPs, which were deposited onto a fluorine-doped tin oxide (FTO) substrate. The hybrid layer was excellent for the immobilization of tyrosinase (Tyr), which allowed an amperometric detection of BPA with a limit of detection of 0.011 µM in the concentration range from 0.05 to 20 µM. Detection was also possible in real water samples with recoveries in the range of 92–105%. The improved sensing performance is attributed to the combined effect of the large surface area and porosity of PA6/PAH nanofibers, the catalytic activity of AuNPs, and oxidoreductase ability of Tyr. These results prov 653 $aBiosensor 653 $aElectrospinning 653 $aGold nanoparticles 653 $aTyrosinase 700 1 $aIWAKI, L. E. O. 700 1 $aSCAGION, V. P. 700 1 $aOLIVEIRA JUNIOR, O. N. 700 1 $aMATTOSO, L. H. C. 700 1 $aCORREA, D. S. 773 $tElectrochem$gv. 2, 2021.
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