Quantification and characterization of the phenolic compounds of kenaf leaves

Detalhes bibliográficos
Autor(a) principal: Pascoal, Andreia Sofia do Cabo
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/10362/11002
Resumo: Dissertation for the Master Degree in Technology and Food Security
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spelling Quantification and characterization of the phenolic compounds of kenaf leavesFood qualityPhenolic compoundsLiquid extractionAntioxidant capacityHPLC-ESI-MSKenafDissertation for the Master Degree in Technology and Food SecurityIn the food industry is necessary to bring new ways to improve the taste and quality of food and add health benefits for the consumer, some herbs and plants are a good natural source of antioxidants having the ability to protect the human system from many chronicle diseases, such as Parkinson and inflammatory processes. Combining these two worlds there is a way to acquire a new product. To know if the plant chosen is suitable to be a future add to a certain food it’s necessary to study the components of the plant and determinate the quantitative and qualitative composition of the metabolite group of interest, in this case phenolic compounds. The plant of interest was Hibiscus cannabinus L. (Kenaf), from Malvaceae family that it’s known for its fibres but it is also used as an infusion or condimental herb and in traditional medicine as an antidote to poisoning with chemicals and venomous mushrooms, it’s known in Asia and Africa but still barely approached by European countries. In order to separate and identify the phenolic compounds a liquid extraction with a polar solvent was the first step, it was chosen MeOH/H2O and MeOH (80% w/w; 100%). Was determinate the antioxidant capacity and the quantification of the phenolic content of the plant samples, for Everglades 41 the DPPH value of Ec50 was 27,33, The ORAC value was 1273,7 (μmol Trolox/mg sample) and the Folin-Ciocalteu 26,40 EAG (mg)/Sample (g)). For the Tainung 2 type was 43,00, 307.54 and 18,67, respectively. The final step was the identification of the compounds by liquid chromatography followed by mass spectrometry with time of fly analyzer and quadrupole time of fly (HPLC-ESI-MS), were obtained 47 compounds for Everglades leaf and 37 for Tainung 2.Faculdade de Ciências e TecnologiaCarretero, AntónioFernando, Ana LuísaRUNPascoal, Andreia Sofia do Cabo2014-01-14T10:43:22Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/11002enginfo: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:RCAAP2024-03-11T03:45:15Zoai:run.unl.pt:10362/11002Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:19:57.640881Repositório 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 Quantification and characterization of the phenolic compounds of kenaf leaves
title Quantification and characterization of the phenolic compounds of kenaf leaves
spellingShingle Quantification and characterization of the phenolic compounds of kenaf leaves
Pascoal, Andreia Sofia do Cabo
Food quality
Phenolic compounds
Liquid extraction
Antioxidant capacity
HPLC-ESI-MS
Kenaf
title_short Quantification and characterization of the phenolic compounds of kenaf leaves
title_full Quantification and characterization of the phenolic compounds of kenaf leaves
title_fullStr Quantification and characterization of the phenolic compounds of kenaf leaves
title_full_unstemmed Quantification and characterization of the phenolic compounds of kenaf leaves
title_sort Quantification and characterization of the phenolic compounds of kenaf leaves
author Pascoal, Andreia Sofia do Cabo
author_facet Pascoal, Andreia Sofia do Cabo
author_role author
dc.contributor.none.fl_str_mv Carretero, António
Fernando, Ana Luísa
RUN
dc.contributor.author.fl_str_mv Pascoal, Andreia Sofia do Cabo
dc.subject.por.fl_str_mv Food quality
Phenolic compounds
Liquid extraction
Antioxidant capacity
HPLC-ESI-MS
Kenaf
topic Food quality
Phenolic compounds
Liquid extraction
Antioxidant capacity
HPLC-ESI-MS
Kenaf
description Dissertation for the Master Degree in Technology and Food Security
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
2014-01-14T10:43:22Z
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/10362/11002
url http://hdl.handle.net/10362/11002
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.publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
publisher.none.fl_str_mv Faculdade de Ciências e Tecnologia
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
_version_ 1799137842075533312

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