Caracterização fitoquímica do óleo de soja adicionado de extrato de Portulaca oleracea L.
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
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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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 |