Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10198/13551 |
Resumo: | Studies with well-established cultivation conditions are of utmost importance in order to standardize the plants production and, therefore, its chemical composition. However, the conservation conditions may influence some of the bioactive compounds present in those plants. Stevia rebaudiana Bertoni samples cultivated in the north-eastern of Portugal, were exposed to different conservation conditions (oven-dried at 30 °C, for six days, or kept fresh by freezing (-20 °C) in the same period), and then studied for their antioxidant potential (including antioxidant compounds such as reducing sugars, tocopherols and phenolic compounds, free radical scavenging activity (DPPH) and reducing power (RP)). Oven-dried samples gave the highest antioxidant activity (DPPH EC50 = 22.87 µg/mL and RP EC50 = 28.79 µg/mL) and the highest total phenolic compounds concentration. The most abundant phenolic compounds in both samples were two caffeic acid derivatives, 5-O-caffeoylquinic acid (chlorogenic acid) and 3,5-O-dicaffeoylquinic acid. Otherwise, the highest values of total tocopherols and total sugars were registered in frozen fresh samples. This study gives clues to choose the most appropriate methodology to preserve primary or secondary metabolites of S. rebaudiana, involved in its antioxidant activity. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditionsSteviaStorage conditionsTocopherolsSugarsPhenolic compoundsAntioxidant activityStudies with well-established cultivation conditions are of utmost importance in order to standardize the plants production and, therefore, its chemical composition. However, the conservation conditions may influence some of the bioactive compounds present in those plants. Stevia rebaudiana Bertoni samples cultivated in the north-eastern of Portugal, were exposed to different conservation conditions (oven-dried at 30 °C, for six days, or kept fresh by freezing (-20 °C) in the same period), and then studied for their antioxidant potential (including antioxidant compounds such as reducing sugars, tocopherols and phenolic compounds, free radical scavenging activity (DPPH) and reducing power (RP)). Oven-dried samples gave the highest antioxidant activity (DPPH EC50 = 22.87 µg/mL and RP EC50 = 28.79 µg/mL) and the highest total phenolic compounds concentration. The most abundant phenolic compounds in both samples were two caffeic acid derivatives, 5-O-caffeoylquinic acid (chlorogenic acid) and 3,5-O-dicaffeoylquinic acid. Otherwise, the highest values of total tocopherols and total sugars were registered in frozen fresh samples. This study gives clues to choose the most appropriate methodology to preserve primary or secondary metabolites of S. rebaudiana, involved in its antioxidant activity.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programe PT2020 for financial support to CIMO (UID/AGR/00690/2013), LSRE (Project UID/EQU/50020/2013) and L. Barros (SFRH/BPD/107855/2015) grant.Biblioteca Digital do IPBBarroso, MarisaBarros, LillianRodrigues, M.A.Sousa, Maria JoãoSantos-Buelga, CelestinoFerreira, Isabel C.F.R.2016-11-30T11:02:46Z20162016-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10198/13551engBarroso, Marisa; Barros, Lillian; Rodrigues, M.A.; Sousa, Maria João; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2016). Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions. Industrial Crops and Products. ISSN 0926-6690. 90, p. 49-550926-669010.1016/j.indcrop.2016.06.013info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-21T10:31:15Zoai:bibliotecadigital.ipb.pt:10198/13551Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:03:27.619903Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
title |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
spellingShingle |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions Barroso, Marisa Stevia Storage conditions Tocopherols Sugars Phenolic compounds Antioxidant activity |
title_short |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
title_full |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
title_fullStr |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
title_full_unstemmed |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
title_sort |
Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions |
author |
Barroso, Marisa |
author_facet |
Barroso, Marisa Barros, Lillian Rodrigues, M.A. Sousa, Maria João Santos-Buelga, Celestino Ferreira, Isabel C.F.R. |
author_role |
author |
author2 |
Barros, Lillian Rodrigues, M.A. Sousa, Maria João Santos-Buelga, Celestino Ferreira, Isabel C.F.R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Barroso, Marisa Barros, Lillian Rodrigues, M.A. Sousa, Maria João Santos-Buelga, Celestino Ferreira, Isabel C.F.R. |
dc.subject.por.fl_str_mv |
Stevia Storage conditions Tocopherols Sugars Phenolic compounds Antioxidant activity |
topic |
Stevia Storage conditions Tocopherols Sugars Phenolic compounds Antioxidant activity |
description |
Studies with well-established cultivation conditions are of utmost importance in order to standardize the plants production and, therefore, its chemical composition. However, the conservation conditions may influence some of the bioactive compounds present in those plants. Stevia rebaudiana Bertoni samples cultivated in the north-eastern of Portugal, were exposed to different conservation conditions (oven-dried at 30 °C, for six days, or kept fresh by freezing (-20 °C) in the same period), and then studied for their antioxidant potential (including antioxidant compounds such as reducing sugars, tocopherols and phenolic compounds, free radical scavenging activity (DPPH) and reducing power (RP)). Oven-dried samples gave the highest antioxidant activity (DPPH EC50 = 22.87 µg/mL and RP EC50 = 28.79 µg/mL) and the highest total phenolic compounds concentration. The most abundant phenolic compounds in both samples were two caffeic acid derivatives, 5-O-caffeoylquinic acid (chlorogenic acid) and 3,5-O-dicaffeoylquinic acid. Otherwise, the highest values of total tocopherols and total sugars were registered in frozen fresh samples. This study gives clues to choose the most appropriate methodology to preserve primary or secondary metabolites of S. rebaudiana, involved in its antioxidant activity. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-11-30T11:02:46Z 2016 2016-01-01T00:00:00Z |
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://hdl.handle.net/10198/13551 |
url |
http://hdl.handle.net/10198/13551 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Barroso, Marisa; Barros, Lillian; Rodrigues, M.A.; Sousa, Maria João; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2016). Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions. Industrial Crops and Products. ISSN 0926-6690. 90, p. 49-55 0926-6690 10.1016/j.indcrop.2016.06.013 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799135277681213440 |