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| Registros recuperados : 175 | |
| Registros recuperados : 175 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças; Embrapa Unidades Centrais. |
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Data corrente: |
28/03/2001 |
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Data da última atualização: |
29/02/2008 |
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Autoria: |
PEREIRA, A. V.; CALBO, A. G. |
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Afiliação: |
EMBRAPA-CNPH, Brasilia, DF. |
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Título: |
Elastic stresses and plastic deformations in Santa Clara tomato fruits caused by package dependent compression. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.35, n.12, p.2429-2436, dez. 2000. |
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Idioma: |
Espanhol
Inglês |
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Conteúdo: |
The objective of this work was to study the fruit compression behavior aiming to develop new tomato packages. Deformations caused by compression forces were observed inside packages and in individual 'Santa Clara' tomato fruit. The forces applied by a transparent acrylic lever to the fruit surface caused pericarp deformation and the flattened area was proportional to the force magnitude. The deformation was associated to the reduction in the gas volume (Vg), caused by expulsion of the air from the loculus cavity and reduction in the intercellular air volume of the pericarp. As ripening advanced, smaller fractions of the Vg reduced by the compressive force were restored after the stress was relieved. The lack of complete Vg restoration was an indication of permanent plastic deformations of the stressed cells. Vg regeneration (elastic recovery) was larger in green fruits than in the red ones. The ratio between the applied force and the flattened area (flattening pressure), which depends on cell turgidity, decreased during ripening. Fruit movements associated with its depth in the container were observed during storage in a transparent glass container (495 x 355 x 220 mm). The downward movement of the fruits was larger in the top layers because these movements seem to be driven by a summation of the deformation of many fruits in all layers. |
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Palavras-Chave: |
Cultivar Santa Clara; Deformacao plastica; Package; Perda por armazenamento; Storage losses; Tomato. |
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Thesagro: |
Armazenamento; Dano Mecânico; Embalagem; Lycopersicon Esculentum; Pêra; Perda; Porosidade; Tomate. |
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Thesaurus NAL: |
Mechanical damage; Porosity; Tomatoes. |
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Categoria do assunto: |
-- |
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URL: |
https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001200014&lng=pt&nrm=iso
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/18888/1/pab99_296.pdf
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Marc: |
LEADER 02299naa a2200337 a 4500
001 1769623
005 2008-02-29
008 2000 bl uuuu u00u1 u #d
100 1 $aPEREIRA, A. V.
245 $aElastic stresses and plastic deformations in Santa Clara tomato fruits caused by package dependent compression.
260 $c2000
520 $aThe objective of this work was to study the fruit compression behavior aiming to develop new tomato packages. Deformations caused by compression forces were observed inside packages and in individual 'Santa Clara' tomato fruit. The forces applied by a transparent acrylic lever to the fruit surface caused pericarp deformation and the flattened area was proportional to the force magnitude. The deformation was associated to the reduction in the gas volume (Vg), caused by expulsion of the air from the loculus cavity and reduction in the intercellular air volume of the pericarp. As ripening advanced, smaller fractions of the Vg reduced by the compressive force were restored after the stress was relieved. The lack of complete Vg restoration was an indication of permanent plastic deformations of the stressed cells. Vg regeneration (elastic recovery) was larger in green fruits than in the red ones. The ratio between the applied force and the flattened area (flattening pressure), which depends on cell turgidity, decreased during ripening. Fruit movements associated with its depth in the container were observed during storage in a transparent glass container (495 x 355 x 220 mm). The downward movement of the fruits was larger in the top layers because these movements seem to be driven by a summation of the deformation of many fruits in all layers.
650 $aMechanical damage
650 $aPorosity
650 $aTomatoes
650 $aArmazenamento
650 $aDano Mecânico
650 $aEmbalagem
650 $aLycopersicon Esculentum
650 $aPêra
650 $aPerda
650 $aPorosidade
650 $aTomate
653 $aCultivar Santa Clara
653 $aDeformacao plastica
653 $aPackage
653 $aPerda por armazenamento
653 $aStorage losses
653 $aTomato
700 1 $aCALBO, A. G.
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.35, n.12, p.2429-2436, dez. 2000.
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Registro original: |
Embrapa Hortaliças (CNPH) |
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