Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification
- Autores
- Viacava, Gabriela Elena; Roura, Sara Ines; Agüero, Maria Victoria
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This work presents a standardized methodology for both the extraction of antioxidants from butterhead lettuce and the evaluation of the antioxidant capacity through DPPH methodology. The standardized extraction of antioxidants requires processing the fresh lettuce leaves (1 g) for 1 min, mixing with 10 mL of acidified ethanol (0.5 or 1 % citric acid) maintaining this mixture with continuous shaking during 1 h at 2 °C. After that, a centrifugation at 8,000 rpm for 15 min is necessary to obtain a fist supernatant (antioxidant source). A second extraction step with acetone:water (70:30 v/v) improves the extraction yield. Extracts can be stored for 14 days at −20 °C without changes in its antioxidant capacity. For quantification, a mixture 1:4 of lettuce extract and DPPH (100 μM) must be incubated for 60 min at 2 °C in dark before reading at 517 nm. Expression of results in terms of mg ascorbic acid equivalents/100 g fresh weight is recommended in order to compare results from different studies. A kinetic study of the reaction between lettuce antioxidants and DPPH was adjusted to a biphasic first-order kinetic model and showed evidence of the presence of antioxidants of slow and rapid antioxidants in lettuce extracts.
Fil: Viacava, Gabriela Elena. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Roura, Sara Ines. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Agüero, Maria Victoria. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Antioxidants
Dpph
Lettuce
Radical Scavenging Capacity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/52055
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Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantificationViacava, Gabriela ElenaRoura, Sara InesAgüero, Maria VictoriaAntioxidantsDpphLettuceRadical Scavenging Capacityhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2This work presents a standardized methodology for both the extraction of antioxidants from butterhead lettuce and the evaluation of the antioxidant capacity through DPPH methodology. The standardized extraction of antioxidants requires processing the fresh lettuce leaves (1 g) for 1 min, mixing with 10 mL of acidified ethanol (0.5 or 1 % citric acid) maintaining this mixture with continuous shaking during 1 h at 2 °C. After that, a centrifugation at 8,000 rpm for 15 min is necessary to obtain a fist supernatant (antioxidant source). A second extraction step with acetone:water (70:30 v/v) improves the extraction yield. Extracts can be stored for 14 days at −20 °C without changes in its antioxidant capacity. For quantification, a mixture 1:4 of lettuce extract and DPPH (100 μM) must be incubated for 60 min at 2 °C in dark before reading at 517 nm. Expression of results in terms of mg ascorbic acid equivalents/100 g fresh weight is recommended in order to compare results from different studies. A kinetic study of the reaction between lettuce antioxidants and DPPH was adjusted to a biphasic first-order kinetic model and showed evidence of the presence of antioxidants of slow and rapid antioxidants in lettuce extracts.Fil: Viacava, Gabriela Elena. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Roura, Sara Ines. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Agüero, Maria Victoria. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaSpringer2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/52055Viacava, Gabriela Elena; Roura, Sara Ines; Agüero, Maria Victoria; Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification; Springer; Journal of Food Measurement and Characterization; 9; 2; 6-2015; 206-2142193-41262193-4134CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s11694-015-9225-8info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11694-015-9225-8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:16:09Zoai:ri.conicet.gov.ar:11336/52055instacron: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 10:16:10.155CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
title |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
spellingShingle |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification Viacava, Gabriela Elena Antioxidants Dpph Lettuce Radical Scavenging Capacity |
title_short |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
title_full |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
title_fullStr |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
title_full_unstemmed |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
title_sort |
Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification |
dc.creator.none.fl_str_mv |
Viacava, Gabriela Elena Roura, Sara Ines Agüero, Maria Victoria |
author |
Viacava, Gabriela Elena |
author_facet |
Viacava, Gabriela Elena Roura, Sara Ines Agüero, Maria Victoria |
author_role |
author |
author2 |
Roura, Sara Ines Agüero, Maria Victoria |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Antioxidants Dpph Lettuce Radical Scavenging Capacity |
topic |
Antioxidants Dpph Lettuce Radical Scavenging Capacity |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
This work presents a standardized methodology for both the extraction of antioxidants from butterhead lettuce and the evaluation of the antioxidant capacity through DPPH methodology. The standardized extraction of antioxidants requires processing the fresh lettuce leaves (1 g) for 1 min, mixing with 10 mL of acidified ethanol (0.5 or 1 % citric acid) maintaining this mixture with continuous shaking during 1 h at 2 °C. After that, a centrifugation at 8,000 rpm for 15 min is necessary to obtain a fist supernatant (antioxidant source). A second extraction step with acetone:water (70:30 v/v) improves the extraction yield. Extracts can be stored for 14 days at −20 °C without changes in its antioxidant capacity. For quantification, a mixture 1:4 of lettuce extract and DPPH (100 μM) must be incubated for 60 min at 2 °C in dark before reading at 517 nm. Expression of results in terms of mg ascorbic acid equivalents/100 g fresh weight is recommended in order to compare results from different studies. A kinetic study of the reaction between lettuce antioxidants and DPPH was adjusted to a biphasic first-order kinetic model and showed evidence of the presence of antioxidants of slow and rapid antioxidants in lettuce extracts. Fil: Viacava, Gabriela Elena. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Roura, Sara Ines. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Investigación en Ingeniería en Alimentos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Agüero, Maria Victoria. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
description |
This work presents a standardized methodology for both the extraction of antioxidants from butterhead lettuce and the evaluation of the antioxidant capacity through DPPH methodology. The standardized extraction of antioxidants requires processing the fresh lettuce leaves (1 g) for 1 min, mixing with 10 mL of acidified ethanol (0.5 or 1 % citric acid) maintaining this mixture with continuous shaking during 1 h at 2 °C. After that, a centrifugation at 8,000 rpm for 15 min is necessary to obtain a fist supernatant (antioxidant source). A second extraction step with acetone:water (70:30 v/v) improves the extraction yield. Extracts can be stored for 14 days at −20 °C without changes in its antioxidant capacity. For quantification, a mixture 1:4 of lettuce extract and DPPH (100 μM) must be incubated for 60 min at 2 °C in dark before reading at 517 nm. Expression of results in terms of mg ascorbic acid equivalents/100 g fresh weight is recommended in order to compare results from different studies. A kinetic study of the reaction between lettuce antioxidants and DPPH was adjusted to a biphasic first-order kinetic model and showed evidence of the presence of antioxidants of slow and rapid antioxidants in lettuce extracts. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06 |
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/11336/52055 Viacava, Gabriela Elena; Roura, Sara Ines; Agüero, Maria Victoria; Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification; Springer; Journal of Food Measurement and Characterization; 9; 2; 6-2015; 206-214 2193-4126 2193-4134 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/52055 |
identifier_str_mv |
Viacava, Gabriela Elena; Roura, Sara Ines; Agüero, Maria Victoria; Antioxidant activity of butterhead lettuce: evaluation of significant factors affecting antioxidant extraction and quantification; Springer; Journal of Food Measurement and Characterization; 9; 2; 6-2015; 206-214 2193-4126 2193-4134 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11694-015-9225-8 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs11694-015-9225-8 |
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 |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
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 |
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1844614103962746880 |
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13.070432 |