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dc.contributor.author
González Belo, Raúl  
dc.contributor.author
Nolasco, S.  
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Mateo, Carmen Margarita  
dc.contributor.author
Izquierdo, Natalia Gabriela  
dc.date.available
2022-11-24T13:50:01Z  
dc.date.issued
2017-09  
dc.identifier.citation
González Belo, Raúl; Nolasco, S.; Mateo, Carmen Margarita; Izquierdo, Natalia Gabriela; Dynamics of oil and tocopherol accumulation in sunflower grains and its impact on final oil quality; Elsevier Science; European Journal of Agronomy; 89; 9-2017; 124-130  
dc.identifier.issn
1161-0301  
dc.identifier.uri
http://hdl.handle.net/11336/178819  
dc.description.abstract
Tocopherols are one of the most important bioactive compounds in vegetable oils. It is known that these antioxidants present a dilution like relationship with oil weight per grain but the mechanism underlying this relationship are unknown. The aim of this work was to analyze the dynamics of tocopherol accumulation in sunflower grains, its relationship with oil accumulation and its effects on final oil quality in genotypes with different fatty acid composition. Three field experiments were conducted with genotypes with different potential fatty acid composition (a traditional, a high oleic and a high stearic−high oleic) and treatments with different source (intercepted solar radiation) or sink (grains) during grain filling to obtain varied grain filling conditions and grains with different oil concentration and oil unsaturation. Intercepted solar radiation modified oil per grain but did not affect tocopherol per grain. The rate of accumulation explained 79% and 74% of the oil and tocopherol per grain variation, respectively. When intercepted solar radiation increased, the duration of the period of oil and tocopherols accumulation increased, being the first the most responsive. These differences in the duration of accumulation periods are reflected in a larger relative increase in oil than tocopherols per grain and thus a dilution of the latter in the oil. These differences in the dynamics of oil and tocopherol accumulation are common to genotypes with different level of unsaturation. These results help to understand the mechanism associated with the dilution curve of oil tocopherol concentration reported in the literature.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ACCUMULATION RATE  
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HELIANTHUS ANNUUS L.  
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INTERCEPTED SOLAR RADIATION  
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OIL PER GRAIN  
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OIL TOCOPHEROLS CONCENTRATION  
dc.subject.classification
Agricultura  
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Agricultura, Silvicultura y Pesca  
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CIENCIAS AGRÍCOLAS  
dc.title
Dynamics of oil and tocopherol accumulation in sunflower grains and its impact on final oil quality  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-11-23T17:58:13Z  
dc.journal.volume
89  
dc.journal.pagination
124-130  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: González Belo, Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina  
dc.description.fil
Fil: Nolasco, S.. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina  
dc.description.fil
Fil: Mateo, Carmen Margarita. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina  
dc.description.fil
Fil: Izquierdo, Natalia Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; Argentina  
dc.journal.title
European Journal of Agronomy  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1161030117300837  
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info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.eja.2017.06.003