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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/34831
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/34831
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-15T15:43:11Zoai: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:34982025-10-15 15:43:11.478CONICET 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
_version_ 1846083537834344448
score 13.22299

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