Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase

Triclosan is a compound with antimicrobial activity broadly used in consumer products. Because of its well-documented toxicity, the amount of triclosan present in different products needs to be tightly controlled. This paper outlines a new amperometric sensor for triclosan detection consisting of...

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Autor principal:	Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo
Formato:	article
Lenguaje:	EN ES
Publicado:	Pontificia Universidad Javeriana 2019
Materias:	amperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. Science (General) Q1-390
Acceso en línea:	https://doaj.org/article/10ced643cb074d758f142f36094c2d3c
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spelling	oai:doaj.org-article:10ced643cb074d758f142f36094c2d3c2021-11-16T16:12:50ZAmperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase10.11144/Javeriana.SC24-2.adot0122-74832027-1352https://doaj.org/article/10ced643cb074d758f142f36094c2d3c2019-08-01T00:00:00Zhttps://revistas.javeriana.edu.co/index.php/scientarium/article/view/Javeriana.SC24-2.adothttps://doaj.org/toc/0122-7483https://doaj.org/toc/2027-1352Triclosan is a compound with antimicrobial activity broadly used in consumer products. Because of its well-documented toxicity, the amount of triclosan present in different products needs to be tightly controlled. This paper outlines a new amperometric sensor for triclosan detection consisting of a screen-printed carbon nanotube electrode (SPCNE) modified with Guinea grass peroxidase (GGP). The GGP-modified SPCNE was able to detect an enhanced electrochemical response of triclosan, unlike the bare SPCNE. The cyclic voltammograms of the GGP-modified SPCNE in a solution of potassium ferrocyanide showed an increase in the current values and linearity between scan rates and oxidation peak currents, suggesting a surface-controlled process. The GGP-modified SPCNE showed an excellent electrocatalytic activity to triclosan oxidation, at a redox potential of 370 mV, in the presence of hydrogen peroxide, exhibiting a linear response between 20 mM to 80 mM and a detection limit of 3 µM. This new amperometry system, based on carbon nanotubes integrated with GGP, becomes a potential tool for environmental analysis and food quality control.Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J CastilloPontificia Universidad Javerianaarticleamperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan.Science (General)Q1-390ENESUniversitas Scientiarum, Vol 24, Iss 2, Pp 363-379 (2019)
institution	DOAJ
collection	DOAJ
language	EN ES
topic	amperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. Science (General) Q1-390
spellingShingle	amperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. Science (General) Q1-390 Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
description	Triclosan is a compound with antimicrobial activity broadly used in consumer products. Because of its well-documented toxicity, the amount of triclosan present in different products needs to be tightly controlled. This paper outlines a new amperometric sensor for triclosan detection consisting of a screen-printed carbon nanotube electrode (SPCNE) modified with Guinea grass peroxidase (GGP). The GGP-modified SPCNE was able to detect an enhanced electrochemical response of triclosan, unlike the bare SPCNE. The cyclic voltammograms of the GGP-modified SPCNE in a solution of potassium ferrocyanide showed an increase in the current values and linearity between scan rates and oxidation peak currents, suggesting a surface-controlled process. The GGP-modified SPCNE showed an excellent electrocatalytic activity to triclosan oxidation, at a redox potential of 370 mV, in the presence of hydrogen peroxide, exhibiting a linear response between 20 mM to 80 mM and a detection limit of 3 µM. This new amperometry system, based on carbon nanotubes integrated with GGP, becomes a potential tool for environmental analysis and food quality control.
format	article
author	Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo
author_facet	Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo
author_sort	Angie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo
title	Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
title_short	Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
title_full	Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
title_fullStr	Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
title_full_unstemmed	Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase
title_sort	amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with guinea grass (panicum maximum) peroxidase
publisher	Pontificia Universidad Javeriana
publishDate	2019
url	https://doaj.org/article/10ced643cb074d758f142f36094c2d3c
work_keys_str_mv	AT angieeorduzangieeorduzsergioiblancojohnjcastillo amperometricdetectionoftriclosanwithscreenprintedcarbonnanotubeelectrodesmodifiedwithguineagrasspanicummaximumperoxidase
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Amperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidase

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