Development of miniaturized fluorimetric device for caffeine determination using a smartphone
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1039/c9ra06220c http://hdl.handle.net/11449/199630 |
Resumo: | Caffeine is an element that is consumed worldwide. It is present in many products such as beverages, chocolate, coffee, tea, energy drinks and medicines. Portable 3D devices working together with colorimetric and fluorimetric reactions have been able to determine the presence of caffeine in different kinds of samples. Also, digital image-based methods using smartphones have conferred portability and accessibility to miniaturized devices that are innovative and promising options for quick and low cost analyses. This study proposes a miniaturized fluorimetric device to determine caffeine by digital image using a smartphone. The OpenCamera app was used to capture images that were processed using ImageJ software to obtain RGB channels values. The red (R) channel signal intensity was selected as the analytical response. The device developed was applied to determine caffeine in an energy drink and medicines. The method developed presented a linear range from 100 to 600 mg L-1 of caffeine, and quantification (LOQ) and detection (LOD) limits of 100 mg L-1 and 30.0 mg L-1, respectively. The caffeine concentration found in the products analyzed was 328 mg L-1 (±2.5%) for the energy drink, 345 mg L-1 (±15%) for medicine A and 322 mg L-1 (±7.3%) for medicine B. The proposed device presented important characteristics such as low cost, required small volumes of reagents and samples, quick analysis, portability and suitable to be applied in complex matrices. |
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Repositório Institucional da UNESP |
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spelling |
Development of miniaturized fluorimetric device for caffeine determination using a smartphoneCaffeine is an element that is consumed worldwide. It is present in many products such as beverages, chocolate, coffee, tea, energy drinks and medicines. Portable 3D devices working together with colorimetric and fluorimetric reactions have been able to determine the presence of caffeine in different kinds of samples. Also, digital image-based methods using smartphones have conferred portability and accessibility to miniaturized devices that are innovative and promising options for quick and low cost analyses. This study proposes a miniaturized fluorimetric device to determine caffeine by digital image using a smartphone. The OpenCamera app was used to capture images that were processed using ImageJ software to obtain RGB channels values. The red (R) channel signal intensity was selected as the analytical response. The device developed was applied to determine caffeine in an energy drink and medicines. The method developed presented a linear range from 100 to 600 mg L-1 of caffeine, and quantification (LOQ) and detection (LOD) limits of 100 mg L-1 and 30.0 mg L-1, respectively. The caffeine concentration found in the products analyzed was 328 mg L-1 (±2.5%) for the energy drink, 345 mg L-1 (±15%) for medicine A and 322 mg L-1 (±7.3%) for medicine B. The proposed device presented important characteristics such as low cost, required small volumes of reagents and samples, quick analysis, portability and suitable to be applied in complex matrices.Department of Analytical Chemistry Unesp National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry, P.O. Box 355Department of Analytical Chemistry Unesp National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM) Institute of Chemistry, P.O. Box 355Universidade Estadual Paulista (Unesp)Luchiari, Natália da Costa [UNESP]Da Silva, Gabrielen Alves [UNESP]Marasco Júnior, César Augusto [UNESP]Lima Gomes, Paulo Clairmont Feitosa de [UNESP]2020-12-12T01:45:07Z2020-12-12T01:45:07Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article35033-35038http://dx.doi.org/10.1039/c9ra06220cRSC Advances, v. 9, n. 60, p. 35033-35038, 2019.2046-2069http://hdl.handle.net/11449/19963010.1039/c9ra06220c2-s2.0-85074709136Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRSC Advancesinfo:eu-repo/semantics/openAccess2021-10-23T08:53:31Zoai:repositorio.unesp.br:11449/199630Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:02:38.084619Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
title |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
spellingShingle |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone Luchiari, Natália da Costa [UNESP] |
title_short |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
title_full |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
title_fullStr |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
title_full_unstemmed |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
title_sort |
Development of miniaturized fluorimetric device for caffeine determination using a smartphone |
author |
Luchiari, Natália da Costa [UNESP] |
author_facet |
Luchiari, Natália da Costa [UNESP] Da Silva, Gabrielen Alves [UNESP] Marasco Júnior, César Augusto [UNESP] Lima Gomes, Paulo Clairmont Feitosa de [UNESP] |
author_role |
author |
author2 |
Da Silva, Gabrielen Alves [UNESP] Marasco Júnior, César Augusto [UNESP] Lima Gomes, Paulo Clairmont Feitosa de [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Luchiari, Natália da Costa [UNESP] Da Silva, Gabrielen Alves [UNESP] Marasco Júnior, César Augusto [UNESP] Lima Gomes, Paulo Clairmont Feitosa de [UNESP] |
description |
Caffeine is an element that is consumed worldwide. It is present in many products such as beverages, chocolate, coffee, tea, energy drinks and medicines. Portable 3D devices working together with colorimetric and fluorimetric reactions have been able to determine the presence of caffeine in different kinds of samples. Also, digital image-based methods using smartphones have conferred portability and accessibility to miniaturized devices that are innovative and promising options for quick and low cost analyses. This study proposes a miniaturized fluorimetric device to determine caffeine by digital image using a smartphone. The OpenCamera app was used to capture images that were processed using ImageJ software to obtain RGB channels values. The red (R) channel signal intensity was selected as the analytical response. The device developed was applied to determine caffeine in an energy drink and medicines. The method developed presented a linear range from 100 to 600 mg L-1 of caffeine, and quantification (LOQ) and detection (LOD) limits of 100 mg L-1 and 30.0 mg L-1, respectively. The caffeine concentration found in the products analyzed was 328 mg L-1 (±2.5%) for the energy drink, 345 mg L-1 (±15%) for medicine A and 322 mg L-1 (±7.3%) for medicine B. The proposed device presented important characteristics such as low cost, required small volumes of reagents and samples, quick analysis, portability and suitable to be applied in complex matrices. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:45:07Z 2020-12-12T01:45:07Z |
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/10.1039/c9ra06220c RSC Advances, v. 9, n. 60, p. 35033-35038, 2019. 2046-2069 http://hdl.handle.net/11449/199630 10.1039/c9ra06220c 2-s2.0-85074709136 |
url |
http://dx.doi.org/10.1039/c9ra06220c http://hdl.handle.net/11449/199630 |
identifier_str_mv |
RSC Advances, v. 9, n. 60, p. 35033-35038, 2019. 2046-2069 10.1039/c9ra06220c 2-s2.0-85074709136 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
RSC Advances |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
35033-35038 |
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_ |
1808129154467495936 |