Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils

Detalhes bibliográficos
Autor(a) principal: Ferro, Miguel Duarte
Data de Publicação: 2013
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/3643
Resumo: Dissertação de mest., Qualidade em Análises, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2013
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spelling Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oilsDieta mediterrânicaDissertação de mest., Qualidade em Análises, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2013Olive oil is a well known vegetable oil due to its beneficial effects on human’s health and its strong economic importance in the Mediterranean area, being this region alone responsible for more than 90% of the olive oil’s world production. In other regions such as the Chinese one, olive oil is not that commonly used, and other vegetable oils such as tea seed oil, rapeseed oil, sesame oil, corn oil, sunflower oil and peanut oil are rather used to prepare the daily meals. The unique characteristics of each type of vegetable oil is directly related to their fatty acid distribution, being this way the study of the fatty acid composition a good way to characterize them. So, GC-MS fingerprinting technique was applied for the characterization of the different oils, being able to identify a total of 22 fatty acids among the seven tested oils in the CSU’s laboratory. Then, chemometrics were applied for data analysis, which included Principal Component Analysis (PCA) and Partial Least Squares – Linear Discriminant Analysis (PLS-LDA), in order to see if (1) it was possible to group the olive oils according to their region of production in the Iberian Peninsula, and (2) this fingerprinting method could be validated for the analyses of vegetable oils through its both inter- and intra-laboratorial comparison. With PLS-LDA we were able to group the olive oil samples according to their region of production, and also a clear distinction could be made between olive oil and tea seed oil by means of a PCA model. In terms of repeatability and intermediate precision, good results were also obtained from the analyses performed both in CSU and HAPPI. The same analyses were then performed resorting to a group of 12 fatty acids, and similar results could be observed as when using all the fatty acids, meaning that these 12 fatty acids posses sufficient information to characterize the different types of oil. The use of Palmitic acid as a reference peak instead an internal standard was also tested, proving to be a good way to perform these analyses.Cavaco, Isabel Maria Palma AntunesLiang, YizengSapientiaFerro, Miguel Duarte2014-03-17T09:38:00Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.1/3643TID:201597527enginfo: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:RCAAP2023-07-24T10:14:45Zoai:sapientia.ualg.pt:10400.1/3643Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:57:12.046092Repositório 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 Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
title Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
spellingShingle Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
Ferro, Miguel Duarte
Dieta mediterrânica
title_short Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
title_full Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
title_fullStr Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
title_full_unstemmed Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
title_sort Chromatographic analysis and comparison of chemical composition of the samples between olive oils in Europe and some chinese oils
author Ferro, Miguel Duarte
author_facet Ferro, Miguel Duarte
author_role author
dc.contributor.none.fl_str_mv Cavaco, Isabel Maria Palma Antunes
Liang, Yizeng
Sapientia
dc.contributor.author.fl_str_mv Ferro, Miguel Duarte
dc.subject.por.fl_str_mv Dieta mediterrânica
topic Dieta mediterrânica
description Dissertação de mest., Qualidade em Análises, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2013
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
2014-03-17T09:38:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/3643
TID:201597527
url http://hdl.handle.net/10400.1/3643
identifier_str_mv TID:201597527
dc.language.iso.fl_str_mv eng
language eng
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
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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