Mechanical behavior of 'Niagara Rosada' grape berry detachment

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dc.contributor.authorGomes, Daniel
dc.contributor.authorFerraz, Antonio C. de O
dc.date.accessioned2024-09-16T13:47:27Z
dc.date.available2024-09-16T13:47:27Z
dc.date.issued2011-12
dc.description.abstractThe 'Niagara Rosada' grape is the main Brazilian table grape belonging to the Labrusca family. It develops medium, cylindrical and compact bunches with berries presenting a pinkish skin and a foxy flavor that is valued in the Brazilian market. These berries are tender and have a pedicel-berry connection provided by the vascular bundles and surrounding skin. This cultivar is very susceptible to berry drop mainly caused by vibration and senescence. The objective of this study was to evaluate the temporal mechanical behavior of the pedicel-berry detachment, using resistance indexes extracted from traction force-deformation curves. Test results showed two different detachment types. In the first one, which exhibited higher average resistance, a considerable portion of the vascular bundle came out attached to the pedicel and in the second type; the vascular bundle was retained inside the berry. The proposed indexes based on maximum detachment force, force at 0.2; 0.5; 1.0 and 1.2 mm, and maximum force to corresponding deformation ratio did not discriminate the senescence of the berry.
dc.identifier.doi10.1590/s0100-69162011000600009
dc.identifier.issn0100-6916
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/2610
dc.publisherFapUNIFESP (SciELO)
dc.relation.ispartofEngenharia Agrícola
dc.subject.keywordspostharvest
dc.subject.keywordsmechanical properties
dc.subject.keywordssenescence
dc.titleMechanical behavior of 'Niagara Rosada' grape berry detachment
dc.typeArtigos
oaire.citation.issue6
oaire.citation.volume31

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