Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees
Autor(a) principal: | |
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Data de Publicação: | 2023 |
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/10198/29511 |
Resumo: | In recent years, occurrences of heat waves and drought have become increasingly frequent, highlighting the undeniable impact of climate change. The rise in temperatures and decline in rainfall have had severe repercussions on olive trees’ behavior and olive oil production. This study aims to evaluate the effects of two-year climate variations on olive oils from centenarian olive trees situated in the Côa Valley region of Northern Portugal. A selection of 25 centenarian plants was made, and the climate influence on fatty acid content, tocopherols, individual phenols, oxidative stability, and antioxidant activity was assessed over two consecutive years. During the second year of the study, a significant variation (p-value < 0.05) in the proportion of palmitic acid was observed, which increased from 12.9% to 13.6%. Conversely, stearic and arachidic acids exhibited a decrease from 2.7% to 2.3% and from 0.37% to 0.35%, respectively. Analysis of the oils revealed a noteworthy difference (p-value < 0.05) in the concentration of -tocopherol. The concentration of oils derived from hydroxytyrosol and tyrosol significantly decreases (p-value < 0.005) during the second year. Additionally, significant differences (p-value < 0.005) were observed in the total phenol content and the percentage of ABTS inhibition, both of which decreased in the second year. These findings reinforce the notion that climatic conditions play a key role in shaping the composition of olive oils. |
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Influence of interannual climate conditions on the composition of olive oil from centenarian olive treesClimate changeOlive oilCompositionInterannual variationsIn recent years, occurrences of heat waves and drought have become increasingly frequent, highlighting the undeniable impact of climate change. The rise in temperatures and decline in rainfall have had severe repercussions on olive trees’ behavior and olive oil production. This study aims to evaluate the effects of two-year climate variations on olive oils from centenarian olive trees situated in the Côa Valley region of Northern Portugal. A selection of 25 centenarian plants was made, and the climate influence on fatty acid content, tocopherols, individual phenols, oxidative stability, and antioxidant activity was assessed over two consecutive years. During the second year of the study, a significant variation (p-value < 0.05) in the proportion of palmitic acid was observed, which increased from 12.9% to 13.6%. Conversely, stearic and arachidic acids exhibited a decrease from 2.7% to 2.3% and from 0.37% to 0.35%, respectively. Analysis of the oils revealed a noteworthy difference (p-value < 0.05) in the concentration of -tocopherol. The concentration of oils derived from hydroxytyrosol and tyrosol significantly decreases (p-value < 0.005) during the second year. Additionally, significant differences (p-value < 0.005) were observed in the total phenol content and the percentage of ABTS inhibition, both of which decreased in the second year. These findings reinforce the notion that climatic conditions play a key role in shaping the composition of olive oils.This research was funded by Foundation for Science and Technology (FCT, Portugal) financial support from national funds FCT/MCTES to CIMO (UIDB/00690/2020 and UIDP/00690/2020), SusTEC (LA/P/0007/2020) and to LAQV/Requimte (UIDB/50006/2020 and UIDP/50006/2020); to the Project “OLIVECOA—Centennial Olive Trees in the Côa Valley Region: rediscovering the past to enhance the future” (ref.COA/BRB/0035/2019). Nuno Rodrigues and Rebeca Cruz thanks the FCT- Foundation for Science and Technology, P.I., for the National funding through the institutional program contract for scientific employment.MDPIBiblioteca Digital do IPBBortoluzzi, Letícia Cabrera ParraCasal, SusanaCruz, RebecaPeres, António M.Baptista, PaulaRodrigues, Nuno2024-02-16T15:10:16Z20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/29511engBortoluzzi, Letícia Cabrera Parra; Casal, Susana; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Rodrigues, Nuno (2023). Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees. Agronomy. ISSN 2073-4395. 13:12, p. 1-162073-439510.3390/agronomy13122884info: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:RCAAP2024-02-21T01:19:30Zoai:bibliotecadigital.ipb.pt:10198/29511Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:39:17.016393Repositório 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 |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
title |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
spellingShingle |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees Bortoluzzi, Letícia Cabrera Parra Climate change Olive oil Composition Interannual variations |
title_short |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
title_full |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
title_fullStr |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
title_full_unstemmed |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
title_sort |
Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees |
author |
Bortoluzzi, Letícia Cabrera Parra |
author_facet |
Bortoluzzi, Letícia Cabrera Parra Casal, Susana Cruz, Rebeca Peres, António M. Baptista, Paula Rodrigues, Nuno |
author_role |
author |
author2 |
Casal, Susana Cruz, Rebeca Peres, António M. Baptista, Paula Rodrigues, Nuno |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Bortoluzzi, Letícia Cabrera Parra Casal, Susana Cruz, Rebeca Peres, António M. Baptista, Paula Rodrigues, Nuno |
dc.subject.por.fl_str_mv |
Climate change Olive oil Composition Interannual variations |
topic |
Climate change Olive oil Composition Interannual variations |
description |
In recent years, occurrences of heat waves and drought have become increasingly frequent, highlighting the undeniable impact of climate change. The rise in temperatures and decline in rainfall have had severe repercussions on olive trees’ behavior and olive oil production. This study aims to evaluate the effects of two-year climate variations on olive oils from centenarian olive trees situated in the Côa Valley region of Northern Portugal. A selection of 25 centenarian plants was made, and the climate influence on fatty acid content, tocopherols, individual phenols, oxidative stability, and antioxidant activity was assessed over two consecutive years. During the second year of the study, a significant variation (p-value < 0.05) in the proportion of palmitic acid was observed, which increased from 12.9% to 13.6%. Conversely, stearic and arachidic acids exhibited a decrease from 2.7% to 2.3% and from 0.37% to 0.35%, respectively. Analysis of the oils revealed a noteworthy difference (p-value < 0.05) in the concentration of -tocopherol. The concentration of oils derived from hydroxytyrosol and tyrosol significantly decreases (p-value < 0.005) during the second year. Additionally, significant differences (p-value < 0.005) were observed in the total phenol content and the percentage of ABTS inhibition, both of which decreased in the second year. These findings reinforce the notion that climatic conditions play a key role in shaping the composition of olive oils. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 2023-01-01T00:00:00Z 2024-02-16T15:10:16Z |
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/10198/29511 |
url |
http://hdl.handle.net/10198/29511 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bortoluzzi, Letícia Cabrera Parra; Casal, Susana; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Rodrigues, Nuno (2023). Influence of interannual climate conditions on the composition of olive oil from centenarian olive trees. Agronomy. ISSN 2073-4395. 13:12, p. 1-16 2073-4395 10.3390/agronomy13122884 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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