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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| Language: | English |
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Pontificia Universidad Javeriana
2019-08-01
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| Series: | Universitas Scientiarum |
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| Online Access: | https://revistas.javeriana.edu.co/index.php/scientarium/article/view/Javeriana.SC24-2.adot |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-10ced643cb074d758f142f36094c2d3c |
| institution | OA Journals |
| issn | 0122-7483 2027-1352 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | Pontificia Universidad Javeriana |
| record_format | Article |
| series | Universitas Scientiarum |
| spelling | doaj-art-10ced643cb074d758f142f36094c2d3c2025-08-20T02:15:54ZengPontificia Universidad JaverianaUniversitas Scientiarum0122-74832027-13522019-08-0124236337910.11144/Javeriana.SC24-2.adotAmperometric detection of triclosan with screen-printed carbon nanotube electrodes modified with Guinea Grass (Panicum maximum) peroxidaseAngie E Orduz, Angie E Orduz, Sergio I Blanco, John J Castillo0Escuela de Química, Grupo de investigación en Bioquímica y Microbiología (gibim), Universidad Industrial de Santander, Bucaramanga, Colombia, Programa de Seguridad y Salud en el trabajo, Facultad de Ciencias de la Salud, Universidad del Quindío, Escuela de Ingeniería Metalúrgica, Universidad Industrial de Santander, Bucaramanga, Colombia.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.https://revistas.javeriana.edu.co/index.php/scientarium/article/view/Javeriana.SC24-2.adotamperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. |
| spellingShingle | 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 Universitas Scientiarum amperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. |
| title | 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_short | 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 |
| topic | amperometric biosensor; carbon nanotubes; guinea grass peroxidase; screen printed electrodes; triclosan. |
| url | https://revistas.javeriana.edu.co/index.php/scientarium/article/view/Javeriana.SC24-2.adot |
| work_keys_str_mv | AT angieeorduzangieeorduzsergioiblancojohnjcastillo amperometricdetectionoftriclosanwithscreenprintedcarbonnanotubeelectrodesmodifiedwithguineagrasspanicummaximumperoxidase |