Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position
- Autores
- Viacava, Gabriela Elena; González Aguilar, Gustavo A; Roura, Sara Ines
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The effect of leaf position on phytochemical distribution in butterhead lettuce was assessed by rings (from ring 1: outer leaves, to ring 6: inner leaves) or by zones (external, middle, internal). Maximum ascorbic acid was found in middle rings while chlorophyll and carotenoids gradually decreased from external to internal rings. Outermost leaves accumulate more phenolics and present more antioxidant activity as determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and trolox-equivalent antioxidant capacity methods. However, the presence of phenolics in this zone also contributes to the enzymatic browning. Quantitative but not qualitative differences were found in the phenolic profiles between inner and outer lettuce zones. The major phenolic compounds identified were the phenolic acids chicoric, chlorogenic and isochlorogenic. For all phenolic compounds, greater content was always found in the external zone except for caffeic acid. A high correlation between DPPH and total phenolics, chlorophyll and carotenes indicated that these compounds were major contributors of antioxidant activity in lettuce.
Fil: Viacava, Gabriela Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; Argentina
Fil: González Aguilar, Gustavo A. Centro de Investigación en Alimentación y Desarrollo. Sonora; México
Fil: Roura, Sara Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; Argentina - Materia
-
Lactuca Sativa
Phenolics
Ascorbic Acid
Chlorophyll
Dpph
Hplc - 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:11336/34831
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Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and PositionViacava, Gabriela ElenaGonzález Aguilar, Gustavo ARoura, Sara InesLactuca SativaPhenolicsAscorbic AcidChlorophyllDpphHplchttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2The effect of leaf position on phytochemical distribution in butterhead lettuce was assessed by rings (from ring 1: outer leaves, to ring 6: inner leaves) or by zones (external, middle, internal). Maximum ascorbic acid was found in middle rings while chlorophyll and carotenoids gradually decreased from external to internal rings. Outermost leaves accumulate more phenolics and present more antioxidant activity as determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and trolox-equivalent antioxidant capacity methods. However, the presence of phenolics in this zone also contributes to the enzymatic browning. Quantitative but not qualitative differences were found in the phenolic profiles between inner and outer lettuce zones. The major phenolic compounds identified were the phenolic acids chicoric, chlorogenic and isochlorogenic. For all phenolic compounds, greater content was always found in the external zone except for caffeic acid. A high correlation between DPPH and total phenolics, chlorophyll and carotenes indicated that these compounds were major contributors of antioxidant activity in lettuce.Fil: Viacava, Gabriela Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; ArgentinaFil: González Aguilar, Gustavo A. Centro de Investigación en Alimentación y Desarrollo. Sonora; MéxicoFil: Roura, Sara Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; ArgentinaWiley Blackwell Publishing, Inc2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/34831Viacava, Gabriela Elena; González Aguilar, Gustavo A; Roura, Sara Ines; Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position; Wiley Blackwell Publishing, Inc; Journal Of Food Biochemistry; 38; 3; 6-2014; 352-3620145-8884CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/jfbc.12060info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/jfbc.12060/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:44:46Zoai:ri.conicet.gov.ar:11336/34831instacron: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 10:44:47.028CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
title |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
spellingShingle |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position Viacava, Gabriela Elena Lactuca Sativa Phenolics Ascorbic Acid Chlorophyll Dpph Hplc |
title_short |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
title_full |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
title_fullStr |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
title_full_unstemmed |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
title_sort |
Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position |
dc.creator.none.fl_str_mv |
Viacava, Gabriela Elena González Aguilar, Gustavo A Roura, Sara Ines |
author |
Viacava, Gabriela Elena |
author_facet |
Viacava, Gabriela Elena González Aguilar, Gustavo A Roura, Sara Ines |
author_role |
author |
author2 |
González Aguilar, Gustavo A Roura, Sara Ines |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Lactuca Sativa Phenolics Ascorbic Acid Chlorophyll Dpph Hplc |
topic |
Lactuca Sativa Phenolics Ascorbic Acid Chlorophyll Dpph Hplc |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.11 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
The effect of leaf position on phytochemical distribution in butterhead lettuce was assessed by rings (from ring 1: outer leaves, to ring 6: inner leaves) or by zones (external, middle, internal). Maximum ascorbic acid was found in middle rings while chlorophyll and carotenoids gradually decreased from external to internal rings. Outermost leaves accumulate more phenolics and present more antioxidant activity as determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and trolox-equivalent antioxidant capacity methods. However, the presence of phenolics in this zone also contributes to the enzymatic browning. Quantitative but not qualitative differences were found in the phenolic profiles between inner and outer lettuce zones. The major phenolic compounds identified were the phenolic acids chicoric, chlorogenic and isochlorogenic. For all phenolic compounds, greater content was always found in the external zone except for caffeic acid. A high correlation between DPPH and total phenolics, chlorophyll and carotenes indicated that these compounds were major contributors of antioxidant activity in lettuce. Fil: Viacava, Gabriela Elena. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; Argentina Fil: González Aguilar, Gustavo A. Centro de Investigación en Alimentación y Desarrollo. Sonora; México Fil: Roura, Sara Ines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Departamento de Ingeniería Química. Grupo de Inv En Ingeniería En Alimentos; Argentina |
description |
The effect of leaf position on phytochemical distribution in butterhead lettuce was assessed by rings (from ring 1: outer leaves, to ring 6: inner leaves) or by zones (external, middle, internal). Maximum ascorbic acid was found in middle rings while chlorophyll and carotenoids gradually decreased from external to internal rings. Outermost leaves accumulate more phenolics and present more antioxidant activity as determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) and trolox-equivalent antioxidant capacity methods. However, the presence of phenolics in this zone also contributes to the enzymatic browning. Quantitative but not qualitative differences were found in the phenolic profiles between inner and outer lettuce zones. The major phenolic compounds identified were the phenolic acids chicoric, chlorogenic and isochlorogenic. For all phenolic compounds, greater content was always found in the external zone except for caffeic acid. A high correlation between DPPH and total phenolics, chlorophyll and carotenes indicated that these compounds were major contributors of antioxidant activity in lettuce. |
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/11336/34831 Viacava, Gabriela Elena; González Aguilar, Gustavo A; Roura, Sara Ines; Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position; Wiley Blackwell Publishing, Inc; Journal Of Food Biochemistry; 38; 3; 6-2014; 352-362 0145-8884 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/34831 |
identifier_str_mv |
Viacava, Gabriela Elena; González Aguilar, Gustavo A; Roura, Sara Ines; Determination of Phytochemicals and Antioxidant Activity in Butterhead Lettuce Related to Leaf Age and Position; Wiley Blackwell Publishing, Inc; Journal Of Food Biochemistry; 38; 3; 6-2014; 352-362 0145-8884 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1111/jfbc.12060 info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/jfbc.12060/abstract |
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 |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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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1844614485795405824 |
score |
13.070432 |