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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
26/04/2014 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEREIRA, M. E. C.; SARGENT, S. A.; SIMS, C. A.; HUBER, D. J.; CRANE, J. H.; BRECHT, J. K. |
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Afiliação: |
MARCIO EDUARDO CANTO PEREIRA, CNPMF; STEVEN A. SARGENT, University of Florida-IFAS; CHARLES A. SIMS, University of Florida-IFAS; DONALD J. HUBER, University of Florida-IFAS; JONATHAN H. CRANE, University of Florida-IFAS; JEFFREY K. BRECHT, University of Florida-IFAS. |
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Título: |
Ripening and sensory analysis of Guatemalan-West Indian hybrid avocado following ethylene pretreatment and/or exposure to gaseous or aqueous 1-methylcyclopropene. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Postharvest Biology and Technology, v. 92, p. 121-127, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
Previous reports showed that both gaseous and aqueous 1-methylcyclopropene (1-MCP) delay ripening of avocado (Persea americana Mill.), but there are no reports of the influence of 1-MCP on its sensory attributes. The objective of this study was to evaluate the effects of ethylene pretreatment and/or exposure to gaseous or aqueous 1-MCP on fruit ripening and sensory attributes of ?Booth 7? avocado, a Guatemalan-West Indian hybrid. Separate experiments were conducted during two seasons (2008 and 2009) with fruit harvested at preclimacteric stage in October (early season) and in November (late season). Fruit from Season 1 were exposed to ethylene (4.07 mol L?1) for 12 h at 20 ?C, and stored for more 12 h at 20 ?C in an ethylene-free (ethylene, <0.1 L L?1) room prior to treatment with either aqueous (1.39 or 2.77 mol L?1 a.i.) or gaseous (3.15 or 6.31 nmol L?1 a.i.) 1-MCP. Ripening was monitored and firmness, respiration, ethylene production and weight loss were measured. Texture profile analysis and sensory analysis were performed on ripe fruit only (firmness, 10?15 N). Fruit from Season 2 were not exposed to ethylene pretreatment but treated only with aqueous 1-MCP 24 h after harvest. Fruit were assessed exclusively for sensory analysis when ripe (firmness, 10?15 N). Treatment with either 1-MCP formulation effectively delayed ripening from 4 to 10 d for early-season fruit, and from 4 to 6 d for lateseason fruit. Higher concentrations of 1-MCP of either formulation had the greatest effect on selected pulp textural parameters of early-season fruit; the gaseous formulation had greater effect on late-season fruit quality than the aqueous formulation. In general, sensory panelists ratings of overall liking were not affected by 1-MCP treatment. Both aqueous and gaseous 1-MCP formulations delayed ripening of the Guatemalan-West Indian ?Booth 7? avocado without significant loss in appearance or in sensory attributes and, therefore, could be considered for use as a postharvest treatment for this hybrid. MenosPrevious reports showed that both gaseous and aqueous 1-methylcyclopropene (1-MCP) delay ripening of avocado (Persea americana Mill.), but there are no reports of the influence of 1-MCP on its sensory attributes. The objective of this study was to evaluate the effects of ethylene pretreatment and/or exposure to gaseous or aqueous 1-MCP on fruit ripening and sensory attributes of ?Booth 7? avocado, a Guatemalan-West Indian hybrid. Separate experiments were conducted during two seasons (2008 and 2009) with fruit harvested at preclimacteric stage in October (early season) and in November (late season). Fruit from Season 1 were exposed to ethylene (4.07 mol L?1) for 12 h at 20 ?C, and stored for more 12 h at 20 ?C in an ethylene-free (ethylene, <0.1 L L?1) room prior to treatment with either aqueous (1.39 or 2.77 mol L?1 a.i.) or gaseous (3.15 or 6.31 nmol L?1 a.i.) 1-MCP. Ripening was monitored and firmness, respiration, ethylene production and weight loss were measured. Texture profile analysis and sensory analysis were performed on ripe fruit only (firmness, 10?15 N). Fruit from Season 2 were not exposed to ethylene pretreatment but treated only with aqueous 1-MCP 24 h after harvest. Fruit were assessed exclusively for sensory analysis when ripe (firmness, 10?15 N). Treatment with either 1-MCP formulation effectively delayed ripening from 4 to 10 d for early-season fruit, and from 4 to 6 d for lateseason fruit. Higher concentrations of 1-MCP of either formulation had the grea... Mostrar Tudo |
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Thesagro: |
Abacate. |
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Thesaurus Nal: |
Avocados. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02698naa a2200205 a 4500
001 1985159
005 2023-05-25
008 2014 bl uuuu u00u1 u #d
100 1 $aPEREIRA, M. E. C.
245 $aRipening and sensory analysis of Guatemalan-West Indian hybrid avocado following ethylene pretreatment and/or exposure to gaseous or aqueous 1-methylcyclopropene.$h[electronic resource]
260 $c2014
520 $aPrevious reports showed that both gaseous and aqueous 1-methylcyclopropene (1-MCP) delay ripening of avocado (Persea americana Mill.), but there are no reports of the influence of 1-MCP on its sensory attributes. The objective of this study was to evaluate the effects of ethylene pretreatment and/or exposure to gaseous or aqueous 1-MCP on fruit ripening and sensory attributes of ?Booth 7? avocado, a Guatemalan-West Indian hybrid. Separate experiments were conducted during two seasons (2008 and 2009) with fruit harvested at preclimacteric stage in October (early season) and in November (late season). Fruit from Season 1 were exposed to ethylene (4.07 mol L?1) for 12 h at 20 ?C, and stored for more 12 h at 20 ?C in an ethylene-free (ethylene, <0.1 L L?1) room prior to treatment with either aqueous (1.39 or 2.77 mol L?1 a.i.) or gaseous (3.15 or 6.31 nmol L?1 a.i.) 1-MCP. Ripening was monitored and firmness, respiration, ethylene production and weight loss were measured. Texture profile analysis and sensory analysis were performed on ripe fruit only (firmness, 10?15 N). Fruit from Season 2 were not exposed to ethylene pretreatment but treated only with aqueous 1-MCP 24 h after harvest. Fruit were assessed exclusively for sensory analysis when ripe (firmness, 10?15 N). Treatment with either 1-MCP formulation effectively delayed ripening from 4 to 10 d for early-season fruit, and from 4 to 6 d for lateseason fruit. Higher concentrations of 1-MCP of either formulation had the greatest effect on selected pulp textural parameters of early-season fruit; the gaseous formulation had greater effect on late-season fruit quality than the aqueous formulation. In general, sensory panelists ratings of overall liking were not affected by 1-MCP treatment. Both aqueous and gaseous 1-MCP formulations delayed ripening of the Guatemalan-West Indian ?Booth 7? avocado without significant loss in appearance or in sensory attributes and, therefore, could be considered for use as a postharvest treatment for this hybrid.
650 $aAvocados
650 $aAbacate
700 1 $aSARGENT, S. A.
700 1 $aSIMS, C. A.
700 1 $aHUBER, D. J.
700 1 $aCRANE, J. H.
700 1 $aBRECHT, J. K.
773 $tPostharvest Biology and Technology$gv. 92, p. 121-127, 2014.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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Classificação |
Cutter |
Registro |
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Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
21/09/1999 |
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Data da última atualização: |
16/12/2019 |
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Autoria: |
JONSSON, C. M.; MAIA, A. de H. N. |
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Afiliação: |
CLAUDIO MARTIN JONSSON, CNPMA; ALINE DE HOLANDA NUNES MAIA, CNPMA. |
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Título: |
Toxicidade aguda do herbicida clomazone no peixe hyphessobrycon scholzei: avaliacao da concentracao letal mediana e de alteracoes no conteudo de nutrientes. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Pesticidas: Revista de Ecotoxicologia e Meio Ambiente, Curitiba, v.8, p.101-110, jan./dez. 1998. |
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Idioma: |
Português |
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Conteúdo: |
Avaliou-se a toxicidade aguda do herbicida Clomazone sobre o peixe Hyphessobrycon scholzei. Foram tambem estudadas possiveis alteracoes no conteudo de proteina total e de macro e microelementos (Na, K, Ca, P, S, Mg, Mn, Zn, Fe e Cu) nos tecidos, decorrentes da exposicao aguda. Os resultados demonstraram que o valor da CL50-96 h foi equivalente a 27,67 (24,29-31, 51) mg/l. Este valor representa a concentracao do herbicida presente em lamina de agua de 10cm, decorrente da aplicacao de aproximadamente 40 vezes a dose agronomica. Nao houve evidencia de alteracoes significativas provocadas pelo Clomazone nos niveis dos nutrientes estudados. |
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Palavras-Chave: |
Agroquimicos; Avaliacao; Concentracao letal; Echinochloa crusgali; Efeito; Microelementos; Pos-emergente; Teste permutacional; Toxicidade. |
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Thesagro: |
Mortalidade. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/207095/1/Jonsson-Toxicidade.pdf
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Marc: |
LEADER 01479naa a2200253 a 4500
001 1013162
005 2019-12-16
008 1998 bl uuuu u00u1 u #d
100 1 $aJONSSON, C. M.
245 $aToxicidade aguda do herbicida clomazone no peixe hyphessobrycon scholzei$bavaliacao da concentracao letal mediana e de alteracoes no conteudo de nutrientes.$h[electronic resource]
260 $c1998
520 $aAvaliou-se a toxicidade aguda do herbicida Clomazone sobre o peixe Hyphessobrycon scholzei. Foram tambem estudadas possiveis alteracoes no conteudo de proteina total e de macro e microelementos (Na, K, Ca, P, S, Mg, Mn, Zn, Fe e Cu) nos tecidos, decorrentes da exposicao aguda. Os resultados demonstraram que o valor da CL50-96 h foi equivalente a 27,67 (24,29-31, 51) mg/l. Este valor representa a concentracao do herbicida presente em lamina de agua de 10cm, decorrente da aplicacao de aproximadamente 40 vezes a dose agronomica. Nao houve evidencia de alteracoes significativas provocadas pelo Clomazone nos niveis dos nutrientes estudados.
650 $aMortalidade
653 $aAgroquimicos
653 $aAvaliacao
653 $aConcentracao letal
653 $aEchinochloa crusgali
653 $aEfeito
653 $aMicroelementos
653 $aPos-emergente
653 $aTeste permutacional
653 $aToxicidade
700 1 $aMAIA, A. de H. N.
773 $tPesticidas: Revista de Ecotoxicologia e Meio Ambiente, Curitiba$gv.8, p.101-110, jan./dez. 1998.
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