Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B

Autores
Talio, María Carolina; Acosta, Maria Gimena; Alesso, Magdalena; Luconi, Marta Olga; Fernandez, Liliana Patricia
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new method for the determination of caffeine, a non-fluorescent analyte, based on the enhancement of the fluorescence of Rhodamine B dye on a membrane filter modified with multi-walled carbon nanotubes is proposed. The method comprises the preconcentration of caffeine on solid support by chemofiltration in buffered solution onto multi-walled carbon nanotubes previously oxided and dispersed in a cationic surfactant admicelles. The effect of experimental parameters, included buffer nature and pH, solid support nature, filtration flow rate, dye and carbon nanotubes concentration, surfactant nature and concentration were investigated by means uni-variation assays. At the best experimental conditions, the preconcentration system provided the detection and quantification limits of is 0.3 µg L-1 and 1.1 µg L-1, respectively. A wide linear range varying from 1.1- 9.7x103 µg L-1 concentration (r2 = 0.999). The satisfactory recovery values obtains using standard addition method confirms the feasibility of this method for caffeine determination in energizing dietary supplements and energy drinks.
Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Materia
Caffeine Monitoring
Rhodamine B
Nylon Membranes
Multi-Walled Carbon Nanotubes
Solid Surface Fluorescence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5787
Acceder
id CONICETDig_966de5911ca08ff5d0c2391f3a9cceb4
oai_identifier_str oai:ri.conicet.gov.ar:11336/5787
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine BTalio, María CarolinaAcosta, Maria GimenaAlesso, MagdalenaLuconi, Marta OlgaFernandez, Liliana PatriciaCaffeine MonitoringRhodamine BNylon MembranesMulti-Walled Carbon NanotubesSolid Surface Fluorescencehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new method for the determination of caffeine, a non-fluorescent analyte, based on the enhancement of the fluorescence of Rhodamine B dye on a membrane filter modified with multi-walled carbon nanotubes is proposed. The method comprises the preconcentration of caffeine on solid support by chemofiltration in buffered solution onto multi-walled carbon nanotubes previously oxided and dispersed in a cationic surfactant admicelles. The effect of experimental parameters, included buffer nature and pH, solid support nature, filtration flow rate, dye and carbon nanotubes concentration, surfactant nature and concentration were investigated by means uni-variation assays. At the best experimental conditions, the preconcentration system provided the detection and quantification limits of is 0.3 µg L-1 and 1.1 µg L-1, respectively. A wide linear range varying from 1.1- 9.7x103 µg L-1 concentration (r2 = 0.999). The satisfactory recovery values obtains using standard addition method confirms the feasibility of this method for caffeine determination in energizing dietary supplements and energy drinks.Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; ArgentinaFil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; ArgentinaFil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; ArgentinaFil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; ArgentinaTaylor & Francis2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5787Talio, María Carolina; Acosta, Maria Gimena; Alesso, Magdalena; Luconi, Marta Olga; Fernandez, Liliana Patricia; Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B; Taylor & Francis; Food Additives & Contaminants: Part A; 31; 8; 6-2014; 1367-13741944-0049enginfo:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/pdf/10.1080/19440049.2014.928831info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1080/19440049.2014.928831info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:19Zoai:ri.conicet.gov.ar:11336/5787instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:59:20.054CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
title Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
spellingShingle Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
Talio, María Carolina
Caffeine Monitoring
Rhodamine B
Nylon Membranes
Multi-Walled Carbon Nanotubes
Solid Surface Fluorescence
title_short Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
title_full Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
title_fullStr Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
title_full_unstemmed Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
title_sort Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B
dc.creator.none.fl_str_mv Talio, María Carolina
Acosta, Maria Gimena
Alesso, Magdalena
Luconi, Marta Olga
Fernandez, Liliana Patricia
author Talio, María Carolina
author_facet Talio, María Carolina
Acosta, Maria Gimena
Alesso, Magdalena
Luconi, Marta Olga
Fernandez, Liliana Patricia
author_role author
author2 Acosta, Maria Gimena
Alesso, Magdalena
Luconi, Marta Olga
Fernandez, Liliana Patricia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Caffeine Monitoring
Rhodamine B
Nylon Membranes
Multi-Walled Carbon Nanotubes
Solid Surface Fluorescence
topic Caffeine Monitoring
Rhodamine B
Nylon Membranes
Multi-Walled Carbon Nanotubes
Solid Surface Fluorescence
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new method for the determination of caffeine, a non-fluorescent analyte, based on the enhancement of the fluorescence of Rhodamine B dye on a membrane filter modified with multi-walled carbon nanotubes is proposed. The method comprises the preconcentration of caffeine on solid support by chemofiltration in buffered solution onto multi-walled carbon nanotubes previously oxided and dispersed in a cationic surfactant admicelles. The effect of experimental parameters, included buffer nature and pH, solid support nature, filtration flow rate, dye and carbon nanotubes concentration, surfactant nature and concentration were investigated by means uni-variation assays. At the best experimental conditions, the preconcentration system provided the detection and quantification limits of is 0.3 µg L-1 and 1.1 µg L-1, respectively. A wide linear range varying from 1.1- 9.7x103 µg L-1 concentration (r2 = 0.999). The satisfactory recovery values obtains using standard addition method confirms the feasibility of this method for caffeine determination in energizing dietary supplements and energy drinks.
Fil: Talio, María Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Acosta, Maria Gimena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina
Fil: Alesso, Magdalena. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Luconi, Marta Olga. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
Fil: Fernandez, Liliana Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Luis. Instituto de Química de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de Quimica, Bioquimica y Farmacia. Departamento de Quimica. Area de Quimica Analitica; Argentina
description A new method for the determination of caffeine, a non-fluorescent analyte, based on the enhancement of the fluorescence of Rhodamine B dye on a membrane filter modified with multi-walled carbon nanotubes is proposed. The method comprises the preconcentration of caffeine on solid support by chemofiltration in buffered solution onto multi-walled carbon nanotubes previously oxided and dispersed in a cationic surfactant admicelles. The effect of experimental parameters, included buffer nature and pH, solid support nature, filtration flow rate, dye and carbon nanotubes concentration, surfactant nature and concentration were investigated by means uni-variation assays. At the best experimental conditions, the preconcentration system provided the detection and quantification limits of is 0.3 µg L-1 and 1.1 µg L-1, respectively. A wide linear range varying from 1.1- 9.7x103 µg L-1 concentration (r2 = 0.999). The satisfactory recovery values obtains using standard addition method confirms the feasibility of this method for caffeine determination in energizing dietary supplements and energy drinks.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/5787
Talio, María Carolina; Acosta, Maria Gimena; Alesso, Magdalena; Luconi, Marta Olga; Fernandez, Liliana Patricia; Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B; Taylor & Francis; Food Additives & Contaminants: Part A; 31; 8; 6-2014; 1367-1374
1944-0049
url http://hdl.handle.net/11336/5787
identifier_str_mv Talio, María Carolina; Acosta, Maria Gimena; Alesso, Magdalena; Luconi, Marta Olga; Fernandez, Liliana Patricia; Quantification of caffeine in dietary supplements and energy drinks by solid-surface fluorescence using a pre-concentration step on multi-walled carbon nanotubes and Rhodamine B; Taylor & Francis; Food Additives & Contaminants: Part A; 31; 8; 6-2014; 1367-1374
1944-0049
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.tandfonline.com/doi/pdf/10.1080/19440049.2014.928831
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1080/19440049.2014.928831
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613761022820352
score 13.070432

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