Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization
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/10198/18643 |
Resumo: | A two years’ experiment (2015–2016) was set in a factorial design in which the effect of two application forms of nitrogen (N) (soil and soil + foliar spray) in different doses (0, 25, 50, and 100 kg N ha-1) on almond (Prunus dulcis Mill. cv. “Masbovera”) was evaluated. Kernel yield, biometric properties, phytochemicals, and antioxidant activities were assessed. The results showed that almond kernel yield increases with an increment in N rate doses and was positively correlated with kernel weight and thickness, and negatively with fruit weight. The levels of α-tocopherol and total polyphenol content were higher with lower N doses (25 and 50 kg N ha–1). The antioxidant activities were positively correlated with polyphenol content. Based on our results, excessive N rates over 50 kg/ha depreciate the levels of α-tocopherol, total polyphenols, and antioxidant bioactivities of kernels. Practical applications Almond is an important nut (dry) fruit that contains high levels of α-tocopherol, moderate levels of polyphenols, and high antioxidant activities, all responsible for their claimed health-promoting properties. Almond trees are known by their alternate behavior in which kernel yield and levels of phytochemicals and other compounds are highly variable between years. This article studies the usage of a sustainable nitrogen fertilization program toward a reduction of their alternate behavior, preserving and promoting their antioxidant properties and their levels of phytochemicals, particularly α-tocopherol and polyphenols. Our findings may provide a useful guide for adequate nitrogen fertilization program toward a better almond kernel quality |
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Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilizationAlmondsAntioxidantsFertilizersNitrogenPhytonutrientsA two years’ experiment (2015–2016) was set in a factorial design in which the effect of two application forms of nitrogen (N) (soil and soil + foliar spray) in different doses (0, 25, 50, and 100 kg N ha-1) on almond (Prunus dulcis Mill. cv. “Masbovera”) was evaluated. Kernel yield, biometric properties, phytochemicals, and antioxidant activities were assessed. The results showed that almond kernel yield increases with an increment in N rate doses and was positively correlated with kernel weight and thickness, and negatively with fruit weight. The levels of α-tocopherol and total polyphenol content were higher with lower N doses (25 and 50 kg N ha–1). The antioxidant activities were positively correlated with polyphenol content. Based on our results, excessive N rates over 50 kg/ha depreciate the levels of α-tocopherol, total polyphenols, and antioxidant bioactivities of kernels. Practical applications Almond is an important nut (dry) fruit that contains high levels of α-tocopherol, moderate levels of polyphenols, and high antioxidant activities, all responsible for their claimed health-promoting properties. Almond trees are known by their alternate behavior in which kernel yield and levels of phytochemicals and other compounds are highly variable between years. This article studies the usage of a sustainable nitrogen fertilization program toward a reduction of their alternate behavior, preserving and promoting their antioxidant properties and their levels of phytochemicals, particularly α-tocopherol and polyphenols. Our findings may provide a useful guide for adequate nitrogen fertilization program toward a better almond kernel qualityBiblioteca Digital do IPBAires, AlfredoMorais, Maria CristinaBarreales, DavidRodrigues, M.A.Ribeiro, A.C.Gonçalves, Berta C.C.Silva, Ana Paula2018-01-19T10:00:00Z20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/18643engAires, Alfredo; Morais, Maria Cristina; Barreales, David; Rodrigues, Manuel Ângelo; Ribeiro, António Castro; Gonçalves, Berta; Silva, Ana Paula (2018). Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization. Journal of Food Biochemistry. ISSN 0145-8884. 42, p.0145-888410.1111/jfbc.12685info: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:RCAAP2023-11-21T10:42:50Zoai:bibliotecadigital.ipb.pt:10198/18643Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:09:02.438334Repositório 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 |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
title |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
spellingShingle |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization Aires, Alfredo Almonds Antioxidants Fertilizers Nitrogen Phytonutrients |
title_short |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
title_full |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
title_fullStr |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
title_full_unstemmed |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
title_sort |
Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization |
author |
Aires, Alfredo |
author_facet |
Aires, Alfredo Morais, Maria Cristina Barreales, David Rodrigues, M.A. Ribeiro, A.C. Gonçalves, Berta C.C. Silva, Ana Paula |
author_role |
author |
author2 |
Morais, Maria Cristina Barreales, David Rodrigues, M.A. Ribeiro, A.C. Gonçalves, Berta C.C. Silva, Ana Paula |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Aires, Alfredo Morais, Maria Cristina Barreales, David Rodrigues, M.A. Ribeiro, A.C. Gonçalves, Berta C.C. Silva, Ana Paula |
dc.subject.por.fl_str_mv |
Almonds Antioxidants Fertilizers Nitrogen Phytonutrients |
topic |
Almonds Antioxidants Fertilizers Nitrogen Phytonutrients |
description |
A two years’ experiment (2015–2016) was set in a factorial design in which the effect of two application forms of nitrogen (N) (soil and soil + foliar spray) in different doses (0, 25, 50, and 100 kg N ha-1) on almond (Prunus dulcis Mill. cv. “Masbovera”) was evaluated. Kernel yield, biometric properties, phytochemicals, and antioxidant activities were assessed. The results showed that almond kernel yield increases with an increment in N rate doses and was positively correlated with kernel weight and thickness, and negatively with fruit weight. The levels of α-tocopherol and total polyphenol content were higher with lower N doses (25 and 50 kg N ha–1). The antioxidant activities were positively correlated with polyphenol content. Based on our results, excessive N rates over 50 kg/ha depreciate the levels of α-tocopherol, total polyphenols, and antioxidant bioactivities of kernels. Practical applications Almond is an important nut (dry) fruit that contains high levels of α-tocopherol, moderate levels of polyphenols, and high antioxidant activities, all responsible for their claimed health-promoting properties. Almond trees are known by their alternate behavior in which kernel yield and levels of phytochemicals and other compounds are highly variable between years. This article studies the usage of a sustainable nitrogen fertilization program toward a reduction of their alternate behavior, preserving and promoting their antioxidant properties and their levels of phytochemicals, particularly α-tocopherol and polyphenols. Our findings may provide a useful guide for adequate nitrogen fertilization program toward a better almond kernel quality |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-19T10:00:00Z 2018 2018-01-01T00:00:00Z |
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/10198/18643 |
url |
http://hdl.handle.net/10198/18643 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aires, Alfredo; Morais, Maria Cristina; Barreales, David; Rodrigues, Manuel Ângelo; Ribeiro, António Castro; Gonçalves, Berta; Silva, Ana Paula (2018). Variation of almond yield, biometry, α-tocopherol levels, and antioxidant properties with nitrogen fertilization. Journal of Food Biochemistry. ISSN 0145-8884. 42, p. 0145-8884 10.1111/jfbc.12685 |
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 |
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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1799135350793175040 |