Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/10198/24229 |
Resumo: | The high proportions of monounsaturated fatty acids (MUFA) represent one of the most important technological and nutritional features of olive oils. The present study details the fatty acid (FA) composition of autochthonous cultivars (Lentisca, Madural, Redondal, Rebolã, Verdeal, and Verdeal Transmontana) produced from centenarian trees during five crop years (2013–2017). Olive cultivar highly influenced the FA composition, namely, oleic acid (70.3% for Madural to 80.7% for Redondal) and palmitic acid (10.4% for Lentisca to 13.5% for Verdeal). Similarly, crop year significantly influenced the individual FA contents. Principal component analysis of FA data enabled the unsupervised classification by cultivar and, within each cultivar, by crop year. Furthermore, the levels of nine individual FAs, together with the polyunsaturated fatty acid contents, selected using the simulated annealing algorithm, allowed for their correct classification, on the basis of linear discriminant analysis, according to the olive cultivar, with an overall sensitivity of 92%, for leave-one-out cross-validation procedure. Globally, the cultivar effect superimposed that of crop year, showing that some cultivars, such as Redondal and Verdeal Transmontana, have consistently high and homogeneous proportions of MUFA, indicating that they are worth exploring in terms of future selection of cultivars that are able to produce olive oils with increased nutritional value and that are less prone to oxidation. |
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Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop yearChemical characterizationChemometricsCrop yearMonounsaturated fatty acidsOlive heritageThe high proportions of monounsaturated fatty acids (MUFA) represent one of the most important technological and nutritional features of olive oils. The present study details the fatty acid (FA) composition of autochthonous cultivars (Lentisca, Madural, Redondal, Rebolã, Verdeal, and Verdeal Transmontana) produced from centenarian trees during five crop years (2013–2017). Olive cultivar highly influenced the FA composition, namely, oleic acid (70.3% for Madural to 80.7% for Redondal) and palmitic acid (10.4% for Lentisca to 13.5% for Verdeal). Similarly, crop year significantly influenced the individual FA contents. Principal component analysis of FA data enabled the unsupervised classification by cultivar and, within each cultivar, by crop year. Furthermore, the levels of nine individual FAs, together with the polyunsaturated fatty acid contents, selected using the simulated annealing algorithm, allowed for their correct classification, on the basis of linear discriminant analysis, according to the olive cultivar, with an overall sensitivity of 92%, for leave-one-out cross-validation procedure. Globally, the cultivar effect superimposed that of crop year, showing that some cultivars, such as Redondal and Verdeal Transmontana, have consistently high and homogeneous proportions of MUFA, indicating that they are worth exploring in terms of future selection of cultivars that are able to produce olive oils with increased nutritional value and that are less prone to oxidation.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support by national funds FCT/MCTES to CIMO (UIDB/00690/2020), and to REQUIMTE (NORTE-01-0145-FEDER-LAQV (UIDB/50006/2020). This work was also supported by PRODER project OliveOld—“Identificação e caraterização de oliveiras centenárias para obtenção de produtos diferenciados” no. 53988. Nuno Rodrigues thanks national funding by FCT—Foundation for Science and Technology, P.I., through the institutional scientific employment program-contract.Biblioteca Digital do IPBRodrigues, NunoCasal, SusanaPinho, TeresaCruz, RebecaPeres, António M.Baptista, PaulaPereira, J.A.2018-01-19T10:00:00Z20212021-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/24229engRodrigues, Nuno; Casal, Susana; Pinho, Teresa; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Pereira, José Alberto (2021). Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year. Foods. ISSN 2304-8158. 10:3, p. 1-1310.3390/foods10030496info: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:RCAAP2023-11-21T10:54:09Zoai:bibliotecadigital.ipb.pt:10198/24229Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:15:04.997573Repositório 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 |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
title |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
spellingShingle |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year Rodrigues, Nuno Chemical characterization Chemometrics Crop year Monounsaturated fatty acids Olive heritage |
title_short |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
title_full |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
title_fullStr |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
title_full_unstemmed |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
title_sort |
Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year |
author |
Rodrigues, Nuno |
author_facet |
Rodrigues, Nuno Casal, Susana Pinho, Teresa Cruz, Rebeca Peres, António M. Baptista, Paula Pereira, J.A. |
author_role |
author |
author2 |
Casal, Susana Pinho, Teresa Cruz, Rebeca Peres, António M. Baptista, Paula Pereira, J.A. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Rodrigues, Nuno Casal, Susana Pinho, Teresa Cruz, Rebeca Peres, António M. Baptista, Paula Pereira, J.A. |
dc.subject.por.fl_str_mv |
Chemical characterization Chemometrics Crop year Monounsaturated fatty acids Olive heritage |
topic |
Chemical characterization Chemometrics Crop year Monounsaturated fatty acids Olive heritage |
description |
The high proportions of monounsaturated fatty acids (MUFA) represent one of the most important technological and nutritional features of olive oils. The present study details the fatty acid (FA) composition of autochthonous cultivars (Lentisca, Madural, Redondal, Rebolã, Verdeal, and Verdeal Transmontana) produced from centenarian trees during five crop years (2013–2017). Olive cultivar highly influenced the FA composition, namely, oleic acid (70.3% for Madural to 80.7% for Redondal) and palmitic acid (10.4% for Lentisca to 13.5% for Verdeal). Similarly, crop year significantly influenced the individual FA contents. Principal component analysis of FA data enabled the unsupervised classification by cultivar and, within each cultivar, by crop year. Furthermore, the levels of nine individual FAs, together with the polyunsaturated fatty acid contents, selected using the simulated annealing algorithm, allowed for their correct classification, on the basis of linear discriminant analysis, according to the olive cultivar, with an overall sensitivity of 92%, for leave-one-out cross-validation procedure. Globally, the cultivar effect superimposed that of crop year, showing that some cultivars, such as Redondal and Verdeal Transmontana, have consistently high and homogeneous proportions of MUFA, indicating that they are worth exploring in terms of future selection of cultivars that are able to produce olive oils with increased nutritional value and that are less prone to oxidation. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-19T10:00:00Z 2021 2021-01-01T00:00:00Z |
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/10198/24229 |
url |
http://hdl.handle.net/10198/24229 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Rodrigues, Nuno; Casal, Susana; Pinho, Teresa; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Pereira, José Alberto (2021). Fatty acid composition from olive oils of portuguese centenarian trees is highly dependent on olive cultivar and crop year. Foods. ISSN 2304-8158. 10:3, p. 1-13 10.3390/foods10030496 |
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.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 |
institution |
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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1799135432157429760 |