Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars
Autor(a) principal: | |
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Data de Publicação: | 2008 |
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/10198/778 |
Resumo: | The chemical composition, antioxidant potential and antimicrobial activity were studied in six walnuts (Juglans regia L.) cultivars (cv. Franquette, Lara, Marbot, Mayette, Mellanaise and Parisienne) produced in Portugal. Concerning their chemical composition the main constituent of fruits was fat ranging from 78.83% to 82.14%, being the nutritional value around 720 kcal per 100 g of fruits. Linoleic acid was the major fatty acid reaching the maximum value of 60.30% (cv. Lara) followed by oleic, linolenic and palmitic acids. The aqueous extracts of walnut cultivars were investigated by the reducing power assay, the scavenging effect on DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals and b-carotene linoleate model system. All the walnut extracts exhibited antioxidant capacity in a concentration- dependent manner being the lowest EC50 values obtained with extracts of cv. Parisienne. Their antimicrobial capacity was also checked against gram positive (Bacillus cereus, Bacillus subtilis, Staphylococcus aureus) and gram negative bacteria (Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae) and fungi (Candida albicans, Cryptococcus neoformans), revealing activity against the different tested microorganisms. |
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Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivarsJuglans regia L.Fatty acidsNutritional valueAntioxidant propertiesAntimicrobial activityThe chemical composition, antioxidant potential and antimicrobial activity were studied in six walnuts (Juglans regia L.) cultivars (cv. Franquette, Lara, Marbot, Mayette, Mellanaise and Parisienne) produced in Portugal. Concerning their chemical composition the main constituent of fruits was fat ranging from 78.83% to 82.14%, being the nutritional value around 720 kcal per 100 g of fruits. Linoleic acid was the major fatty acid reaching the maximum value of 60.30% (cv. Lara) followed by oleic, linolenic and palmitic acids. The aqueous extracts of walnut cultivars were investigated by the reducing power assay, the scavenging effect on DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals and b-carotene linoleate model system. All the walnut extracts exhibited antioxidant capacity in a concentration- dependent manner being the lowest EC50 values obtained with extracts of cv. Parisienne. Their antimicrobial capacity was also checked against gram positive (Bacillus cereus, Bacillus subtilis, Staphylococcus aureus) and gram negative bacteria (Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae) and fungi (Candida albicans, Cryptococcus neoformans), revealing activity against the different tested microorganisms.ElsevierBiblioteca Digital do IPBPereira, J.A.Oliveira, IvoSousa, AnabelaFerreira, Isabel C.F.R.Bento, AlbinoEstevinho, Leticia M.2008-09-08T08:54:34Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/778engPereira, J.A.; Oliveira, I.; Sousa, A.; Ferreira, Isabel C.F.R.; Bento, Albino; Estevinho, Letícia M. (2008). Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars. Food and Chemical Toxicology. ISSN 0278-6915. 46:6, p. 2103-21110278-691510.1016/j.fct.2008.02.002info: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:RCAAP2023-11-21T10:03:51Zoai:bibliotecadigital.ipb.pt:10198/778Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:54:26.032121Repositório 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 |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
title |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
spellingShingle |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars Pereira, J.A. Juglans regia L. Fatty acids Nutritional value Antioxidant properties Antimicrobial activity |
title_short |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
title_full |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
title_fullStr |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
title_full_unstemmed |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
title_sort |
Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars |
author |
Pereira, J.A. |
author_facet |
Pereira, J.A. Oliveira, Ivo Sousa, Anabela Ferreira, Isabel C.F.R. Bento, Albino Estevinho, Leticia M. |
author_role |
author |
author2 |
Oliveira, Ivo Sousa, Anabela Ferreira, Isabel C.F.R. Bento, Albino Estevinho, Leticia M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Pereira, J.A. Oliveira, Ivo Sousa, Anabela Ferreira, Isabel C.F.R. Bento, Albino Estevinho, Leticia M. |
dc.subject.por.fl_str_mv |
Juglans regia L. Fatty acids Nutritional value Antioxidant properties Antimicrobial activity |
topic |
Juglans regia L. Fatty acids Nutritional value Antioxidant properties Antimicrobial activity |
description |
The chemical composition, antioxidant potential and antimicrobial activity were studied in six walnuts (Juglans regia L.) cultivars (cv. Franquette, Lara, Marbot, Mayette, Mellanaise and Parisienne) produced in Portugal. Concerning their chemical composition the main constituent of fruits was fat ranging from 78.83% to 82.14%, being the nutritional value around 720 kcal per 100 g of fruits. Linoleic acid was the major fatty acid reaching the maximum value of 60.30% (cv. Lara) followed by oleic, linolenic and palmitic acids. The aqueous extracts of walnut cultivars were investigated by the reducing power assay, the scavenging effect on DPPH (2,2-diphenyl-1-picrylhydrazyl) radicals and b-carotene linoleate model system. All the walnut extracts exhibited antioxidant capacity in a concentration- dependent manner being the lowest EC50 values obtained with extracts of cv. Parisienne. Their antimicrobial capacity was also checked against gram positive (Bacillus cereus, Bacillus subtilis, Staphylococcus aureus) and gram negative bacteria (Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae) and fungi (Candida albicans, Cryptococcus neoformans), revealing activity against the different tested microorganisms. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-08T08:54:34Z 2008 2008-01-01T00:00:00Z |
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/10198/778 |
url |
http://hdl.handle.net/10198/778 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Pereira, J.A.; Oliveira, I.; Sousa, A.; Ferreira, Isabel C.F.R.; Bento, Albino; Estevinho, Letícia M. (2008). Bioactive properties and chemical composition of six walnut (Juglans regia L.) cultivars. Food and Chemical Toxicology. ISSN 0278-6915. 46:6, p. 2103-2111 0278-6915 10.1016/j.fct.2008.02.002 |
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 |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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 |
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 |
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1799135142744162304 |