Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10800-022-01703-z http://hdl.handle.net/11449/239940 |
Resumo: | The present work reports the development of screen-printed electrode (SPE) using flexible polyester sheets modified with nanodiamond (ND), Au nanoparticles (AuNPs), and poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS), and its application for the detection of tryptophan in synthetic urine, milk, and dark chocolate samples. The ND/AuNPs/PEDOT:PSS nanocomposite was characterized by cyclic voltammetry, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The proposed ND/AuNPs/PEDOT:PSS-based SPE was applied for the detection of tryptophan using square-wave voltammetry in a linear detection range of 0.8 µmol L−1–18 µmol L−1, with limits of detection (LOD) and quantification (LOQ) of 0.2 µmol L−1 and 0.8 µmol L−1, respectively. The sensor was successfully applied for tryptophan quantification in dark chocolate, milk and synthetic urine where good recovery percentages were obtained. The results obtained from the analysis of interference in the presence of dopamine and caffeine showed that the ND/AuNPs/PEDOT:PSS-based SPE exhibited excellent selectivity toward tryptophan. The findings of this study show that metallic nanoparticles, nanodiamonds and biocompatible conductive composites can be used as a suitable, affordable alternative tool for fast, simple, and low-cost detection of tryptophan in non-invasive testing and analysis of food products. Graphical abstract: [Figure not available: see fulltext.] |
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Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeineElectrochemical sensorsMetallic nanoparticlesNanodiamondScreen-printed electrodesTryptophanThe present work reports the development of screen-printed electrode (SPE) using flexible polyester sheets modified with nanodiamond (ND), Au nanoparticles (AuNPs), and poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS), and its application for the detection of tryptophan in synthetic urine, milk, and dark chocolate samples. The ND/AuNPs/PEDOT:PSS nanocomposite was characterized by cyclic voltammetry, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The proposed ND/AuNPs/PEDOT:PSS-based SPE was applied for the detection of tryptophan using square-wave voltammetry in a linear detection range of 0.8 µmol L−1–18 µmol L−1, with limits of detection (LOD) and quantification (LOQ) of 0.2 µmol L−1 and 0.8 µmol L−1, respectively. The sensor was successfully applied for tryptophan quantification in dark chocolate, milk and synthetic urine where good recovery percentages were obtained. The results obtained from the analysis of interference in the presence of dopamine and caffeine showed that the ND/AuNPs/PEDOT:PSS-based SPE exhibited excellent selectivity toward tryptophan. The findings of this study show that metallic nanoparticles, nanodiamonds and biocompatible conductive composites can be used as a suitable, affordable alternative tool for fast, simple, and low-cost detection of tryptophan in non-invasive testing and analysis of food products. Graphical abstract: [Figure not available: see fulltext.]Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Institute of Chemistry State University of São Paulo (UNESP), SPToxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) National Institute for Detection of Alternative Technologies, SPDepartment of Chemistry Federal University of São Carlos, SPSão Carlos Institute of Physics University of São Paulo, P.O Box 369, SPInstitute of Chemistry State University of São Paulo (UNESP), SPFAPESP: 2014/50945-4CNPq: 465571/2014-0CAPES: PROJ. AUX/PE/PROEX Nº 0674/2018Universidade Estadual Paulista (UNESP)National Institute for Detection of Alternative TechnologiesUniversidade Federal de São Carlos (UFSCar)Universidade de São Paulo (USP)Wong, Ademar [UNESP]Materón, Elsa MaríaFreitas, Tayane A.Faria, Ronaldo C.Gonçalves, DéboraSotomayor, Maria Del Pilar Taboada [UNESP]2023-03-01T19:54:21Z2023-03-01T19:54:21Z2022-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1249-1257http://dx.doi.org/10.1007/s10800-022-01703-zJournal of Applied Electrochemistry, v. 52, n. 8, p. 1249-1257, 2022.1572-88380021-891Xhttp://hdl.handle.net/11449/23994010.1007/s10800-022-01703-z2-s2.0-85128825951Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Applied Electrochemistryinfo:eu-repo/semantics/openAccess2023-03-01T19:54:21Zoai:repositorio.unesp.br:11449/239940Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:18:57.644229Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
title |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
spellingShingle |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine Wong, Ademar [UNESP] Electrochemical sensors Metallic nanoparticles Nanodiamond Screen-printed electrodes Tryptophan |
title_short |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
title_full |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
title_fullStr |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
title_full_unstemmed |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
title_sort |
Voltammetric sensing of tryptophan in dark chocolate bars, skimmed milk and urine samples in the presence of dopamine and caffeine |
author |
Wong, Ademar [UNESP] |
author_facet |
Wong, Ademar [UNESP] Materón, Elsa María Freitas, Tayane A. Faria, Ronaldo C. Gonçalves, Débora Sotomayor, Maria Del Pilar Taboada [UNESP] |
author_role |
author |
author2 |
Materón, Elsa María Freitas, Tayane A. Faria, Ronaldo C. Gonçalves, Débora Sotomayor, Maria Del Pilar Taboada [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) National Institute for Detection of Alternative Technologies Universidade Federal de São Carlos (UFSCar) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Wong, Ademar [UNESP] Materón, Elsa María Freitas, Tayane A. Faria, Ronaldo C. Gonçalves, Débora Sotomayor, Maria Del Pilar Taboada [UNESP] |
dc.subject.por.fl_str_mv |
Electrochemical sensors Metallic nanoparticles Nanodiamond Screen-printed electrodes Tryptophan |
topic |
Electrochemical sensors Metallic nanoparticles Nanodiamond Screen-printed electrodes Tryptophan |
description |
The present work reports the development of screen-printed electrode (SPE) using flexible polyester sheets modified with nanodiamond (ND), Au nanoparticles (AuNPs), and poly(3,4-ethylene dioxythiophene):polystyrene sulfonate (PEDOT:PSS), and its application for the detection of tryptophan in synthetic urine, milk, and dark chocolate samples. The ND/AuNPs/PEDOT:PSS nanocomposite was characterized by cyclic voltammetry, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The proposed ND/AuNPs/PEDOT:PSS-based SPE was applied for the detection of tryptophan using square-wave voltammetry in a linear detection range of 0.8 µmol L−1–18 µmol L−1, with limits of detection (LOD) and quantification (LOQ) of 0.2 µmol L−1 and 0.8 µmol L−1, respectively. The sensor was successfully applied for tryptophan quantification in dark chocolate, milk and synthetic urine where good recovery percentages were obtained. The results obtained from the analysis of interference in the presence of dopamine and caffeine showed that the ND/AuNPs/PEDOT:PSS-based SPE exhibited excellent selectivity toward tryptophan. The findings of this study show that metallic nanoparticles, nanodiamonds and biocompatible conductive composites can be used as a suitable, affordable alternative tool for fast, simple, and low-cost detection of tryptophan in non-invasive testing and analysis of food products. Graphical abstract: [Figure not available: see fulltext.] |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-08-01 2023-03-01T19:54:21Z 2023-03-01T19:54:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10800-022-01703-z Journal of Applied Electrochemistry, v. 52, n. 8, p. 1249-1257, 2022. 1572-8838 0021-891X http://hdl.handle.net/11449/239940 10.1007/s10800-022-01703-z 2-s2.0-85128825951 |
url |
http://dx.doi.org/10.1007/s10800-022-01703-z http://hdl.handle.net/11449/239940 |
identifier_str_mv |
Journal of Applied Electrochemistry, v. 52, n. 8, p. 1249-1257, 2022. 1572-8838 0021-891X 10.1007/s10800-022-01703-z 2-s2.0-85128825951 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Applied Electrochemistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1249-1257 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128346787151872 |