Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.

Detalhes bibliográficos
Autor(a) principal: Jorge, Neuza [UNESP]
Data de Publicação: 2018
Outros Autores: Pietro, Taísa Attuy [UNESP], Luzia, Débora Maria Moreno, Veronezi, Carolina Médici [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/0034-737X201865010001
http://hdl.handle.net/11449/212517
Resumo: The main objective of the present work was to measure the total phenolic compound content and antioxidant activity of Portulaca oleracea L. extract, besides evaluating the oxidative stability and phytochemical compound retention present in soybean oil plus synthetic (TBHQ and BHT) and natural (Portulaca oleracea L. extract) antioxidants. The treatments soybean oil (SO), soybean oil plus 100 mg/kg TBHQ (TBHQ), soybean oil plus 100 mg/kg BHT (BHT), and soybean oil plus 100 mg/kg extract (Extract) were subjected to thermo-oxidation at 180 ºC/5 h. The extract presented 99.5 mg EAG/100 g of total phenolic compounds and 84.6, 35.5, and 1.8µM Trolox/100 g of antioxidant activity to DPPH, β-carotene/linoleic acid system, and FRAP, respectively. The oxidative stability for the Extract treatment was inferior to TBHQ, which showed the longest induction period (7.6 h). After heating, TBHQ and Extract treatments presented higher capacity of tocopherol and phytosterol retention, reaching values over 88 and 87%, respectively. Similar percentages of polyunsaturated fatty acids were found in SO and Extract treatments. The purslane extract in the 100 mg/kg concentration reduced the alterations suffered by soybean oil after heating and it can be used as a natural substitute for synthetic antioxidants.
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spelling Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.Phytochemical characterization of soybean oil with addition of Portulaca oleracea L. extractpurslaneantioxidantsoxidative stabilitybioactive compoundsbeldroegaantioxidantesestabilidade oxidativacompostos bioativosThe main objective of the present work was to measure the total phenolic compound content and antioxidant activity of Portulaca oleracea L. extract, besides evaluating the oxidative stability and phytochemical compound retention present in soybean oil plus synthetic (TBHQ and BHT) and natural (Portulaca oleracea L. extract) antioxidants. The treatments soybean oil (SO), soybean oil plus 100 mg/kg TBHQ (TBHQ), soybean oil plus 100 mg/kg BHT (BHT), and soybean oil plus 100 mg/kg extract (Extract) were subjected to thermo-oxidation at 180 ºC/5 h. The extract presented 99.5 mg EAG/100 g of total phenolic compounds and 84.6, 35.5, and 1.8µM Trolox/100 g of antioxidant activity to DPPH, β-carotene/linoleic acid system, and FRAP, respectively. The oxidative stability for the Extract treatment was inferior to TBHQ, which showed the longest induction period (7.6 h). After heating, TBHQ and Extract treatments presented higher capacity of tocopherol and phytosterol retention, reaching values over 88 and 87%, respectively. Similar percentages of polyunsaturated fatty acids were found in SO and Extract treatments. The purslane extract in the 100 mg/kg concentration reduced the alterations suffered by soybean oil after heating and it can be used as a natural substitute for synthetic antioxidants.Este trabalho teve como principais objetivos medir o teor de compostos fenólicos totais e a atividade antioxidante do extrato de Portulaca oleracea L., além de avaliar a estabilidade oxidativa e a retenção dos compostos fitoquímicos presentes no óleo de soja adicionado de antioxidantes sintéticos (TBHQ e BHT) e naturais (Extrato de Portulaca oleracea L.). Os tratamentos: óleo de soja (OS), óleo de soja adicionado de 100 mg/kg TBHQ (TBHQ), óleo de soja adicionado de 100 mg/kg BHT (BHT) e óleo de soja adicionado de 100 mg/kg extrato (Extrato) foram submetidos à termoxidação a 180 oC, por cinco horas. O extrato apresentou 99,5 mg EAG/100 g de compostos fenólicos totais e 84,6%, 35,5% e 1,8 µM Trolox/100 g de atividade antioxidante para DPPH, sistema β-caroteno/ácido linoleico e FRAP, respectivamente. A estabilidade oxidativa do tratamento Extrato foi inferior à do TBHQ, que apresentou o maior período de indução (7,6 h). Após aquecimento, os tratamentos TBHQ e Extrato apresentaram maior capacidade de retenção de tocoferóis e fitosteróis, atingindo valores acima de 88 e 87%, respectivamente. Percentagens similares de ácidos graxos poli-insaturados foram encontradas nos tratamentos OS e Extrato. O extrato de beldroega na concentração 100 mg/kg foi capaz de reduzir as alterações sofridas pelo óleo de soja após aquecimento e pode ser utilizado como substituto natural de antioxidantes sintéticos.Universidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia e Tecnologia de AlimentosUniversidade do Estado de Minas Gerais, Departamento de Ciências Exatas e da TerraUniversidade Estadual Paulista Júlio de Mesquita Filho, Departamento de Engenharia e Tecnologia de AlimentosUniversidade Federal de ViçosaUniversidade Estadual Paulista (Unesp)Universidade do Estado de Minas GeraisJorge, Neuza [UNESP]Pietro, Taísa Attuy [UNESP]Luzia, Débora Maria MorenoVeronezi, Carolina Médici [UNESP]2021-07-14T10:41:14Z2021-07-14T10:41:14Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article01-06application/pdfhttp://dx.doi.org/10.1590/0034-737X201865010001Revista Ceres. Universidade Federal de Viçosa, v. 65, n. 01, p. 01-06, 2018.0034-737Xhttp://hdl.handle.net/11449/21251710.1590/0034-737X201865010001S0034-737X2018000100001S0034-737X2018000100001.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Ceresinfo:eu-repo/semantics/openAccess2023-10-04T06:05:41Zoai:repositorio.unesp.br:11449/212517Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:59:03.645213Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
Phytochemical characterization of soybean oil with addition of Portulaca oleracea L. extract
title Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
spellingShingle Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
Jorge, Neuza [UNESP]
purslane
antioxidants
oxidative stability
bioactive compounds
beldroega
antioxidantes
estabilidade oxidativa
compostos bioativos
title_short Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
title_full Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
title_fullStr Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
title_full_unstemmed Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
title_sort Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
author Jorge, Neuza [UNESP]
author_facet Jorge, Neuza [UNESP]
Pietro, Taísa Attuy [UNESP]
Luzia, Débora Maria Moreno
Veronezi, Carolina Médici [UNESP]
author_role author
author2 Pietro, Taísa Attuy [UNESP]
Luzia, Débora Maria Moreno
Veronezi, Carolina Médici [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade do Estado de Minas Gerais
dc.contributor.author.fl_str_mv Jorge, Neuza [UNESP]
Pietro, Taísa Attuy [UNESP]
Luzia, Débora Maria Moreno
Veronezi, Carolina Médici [UNESP]
dc.subject.por.fl_str_mv purslane
antioxidants
oxidative stability
bioactive compounds
beldroega
antioxidantes
estabilidade oxidativa
compostos bioativos
topic purslane
antioxidants
oxidative stability
bioactive compounds
beldroega
antioxidantes
estabilidade oxidativa
compostos bioativos
description The main objective of the present work was to measure the total phenolic compound content and antioxidant activity of Portulaca oleracea L. extract, besides evaluating the oxidative stability and phytochemical compound retention present in soybean oil plus synthetic (TBHQ and BHT) and natural (Portulaca oleracea L. extract) antioxidants. The treatments soybean oil (SO), soybean oil plus 100 mg/kg TBHQ (TBHQ), soybean oil plus 100 mg/kg BHT (BHT), and soybean oil plus 100 mg/kg extract (Extract) were subjected to thermo-oxidation at 180 ºC/5 h. The extract presented 99.5 mg EAG/100 g of total phenolic compounds and 84.6, 35.5, and 1.8µM Trolox/100 g of antioxidant activity to DPPH, β-carotene/linoleic acid system, and FRAP, respectively. The oxidative stability for the Extract treatment was inferior to TBHQ, which showed the longest induction period (7.6 h). After heating, TBHQ and Extract treatments presented higher capacity of tocopherol and phytosterol retention, reaching values over 88 and 87%, respectively. Similar percentages of polyunsaturated fatty acids were found in SO and Extract treatments. The purslane extract in the 100 mg/kg concentration reduced the alterations suffered by soybean oil after heating and it can be used as a natural substitute for synthetic antioxidants.
publishDate 2018
dc.date.none.fl_str_mv 2018
2021-07-14T10:41:14Z
2021-07-14T10:41:14Z
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/10.1590/0034-737X201865010001
Revista Ceres. Universidade Federal de Viçosa, v. 65, n. 01, p. 01-06, 2018.
0034-737X
http://hdl.handle.net/11449/212517
10.1590/0034-737X201865010001
S0034-737X2018000100001
S0034-737X2018000100001.pdf
url http://dx.doi.org/10.1590/0034-737X201865010001
http://hdl.handle.net/11449/212517
identifier_str_mv Revista Ceres. Universidade Federal de Viçosa, v. 65, n. 01, p. 01-06, 2018.
0034-737X
10.1590/0034-737X201865010001
S0034-737X2018000100001
S0034-737X2018000100001.pdf
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Revista Ceres
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 01-06
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Viçosa
publisher.none.fl_str_mv Universidade Federal de Viçosa
dc.source.none.fl_str_mv SciELO
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_ 1808128300592136192

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