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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroindústria de Alimentos. Para informações adicionais entre em contato com ctaa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
25/11/2010 |
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Data da última atualização: |
30/11/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CÁRCEL, J. A.; NOGUEIRA, R. I.; GARCÍA-PÉREZ, J. V.; SANJUÁN, N.; RIERA, E. |
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Afiliação: |
JUAN A. CÁRCEL, ASPA GROUP; REGINA ISABEL NOGUEIRA, CTAA; J. V. GARCÍA-PÉREZ, ASPA GROUP; N. SANJUÁN, ASPA GROUP; E. RIERA, ASPA GROUP. |
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Título: |
Ultrasound effects on the mass transfer processes during drying kinetic of olive leaves (Olea Europea, var. Serrana). |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Defect and Diffusion Forum, v. 297-301, p. 1083-1090, 2010. |
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DOI: |
10.4028/www.scientific.net/DDF.297-301.1083 |
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Idioma: |
Inglês |
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Conteúdo: |
The large amount of materials derived from olive trees pruning may constitute a source of compounds with antioxidant activity. The air drying of raw matter is a previous stage before extraction preserving the raw matter and avoiding the interference of water on the process but it constitutes a slow and high energy demanding process. In this sense, the application of high intensity ultrasound could affect the mass transfer rate. In order to address the influence of ultrasound on the drying process of olive leaves, air drying experiments were carried out (40ºC and1 m/s) without (0 W) and with ultrasound application (8, 16, 25 and 33 kW/m3). The different drying conditions were tested by triplicate. To model the experimental data, diffusional models considering or not the external resistance to mass transfer were used. The model without considering external resistance did not fit well to the experimental data. However, the model including external resistance achieved percentages of explained variance above 99.7%. The influence of ultrasound on diffusivity was not significant but a significant dependence was found for the mass transfer coefficient, proportional to the power density applied. |
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Palavras-Chave: |
Cinética; Folha de oliveira; Oliva; Transferência de massa. |
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Thesagro: |
Olea Europaea; Secagem; Ultrassom. |
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Thesaurus Nal: |
Kinetics; Ultrasonics. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02052naa a2200289 a 4500
001 1868020
005 2012-11-30
008 2010 bl uuuu u00u1 u #d
024 7 $a10.4028/www.scientific.net/DDF.297-301.1083$2DOI
100 1 $aCÁRCEL, J. A.
245 $aUltrasound effects on the mass transfer processes during drying kinetic of olive leaves (Olea Europea, var. Serrana).
260 $c2010
520 $aThe large amount of materials derived from olive trees pruning may constitute a source of compounds with antioxidant activity. The air drying of raw matter is a previous stage before extraction preserving the raw matter and avoiding the interference of water on the process but it constitutes a slow and high energy demanding process. In this sense, the application of high intensity ultrasound could affect the mass transfer rate. In order to address the influence of ultrasound on the drying process of olive leaves, air drying experiments were carried out (40ºC and1 m/s) without (0 W) and with ultrasound application (8, 16, 25 and 33 kW/m3). The different drying conditions were tested by triplicate. To model the experimental data, diffusional models considering or not the external resistance to mass transfer were used. The model without considering external resistance did not fit well to the experimental data. However, the model including external resistance achieved percentages of explained variance above 99.7%. The influence of ultrasound on diffusivity was not significant but a significant dependence was found for the mass transfer coefficient, proportional to the power density applied.
650 $aKinetics
650 $aUltrasonics
650 $aOlea Europaea
650 $aSecagem
650 $aUltrassom
653 $aCinética
653 $aFolha de oliveira
653 $aOliva
653 $aTransferência de massa
700 1 $aNOGUEIRA, R. I.
700 1 $aGARCÍA-PÉREZ, J. V.
700 1 $aSANJUÁN, N.
700 1 $aRIERA, E.
773 $tDefect and Diffusion Forum$gv. 297-301, p. 1083-1090, 2010.
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Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
20/01/2017 |
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Data da última atualização: |
22/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CUNHA, R. P. da; PEDROSO, C. E. da S.; MITTELMANN, A.; OLIVEIRA, R. C. de; BOHN, A.; SILVA, J. D. G. da; MAIA, M. de S. |
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Afiliação: |
Ricardo Pereira da Cunha, UFPel; Carlos Eduardo da Silva Pedroso, UFPel; ANDREA MITTELMANN, CNPGL; Roberto Caetano de Oliveira, UFPel; Alberto Bohn, UFPel; Jéssica Dias Gomes da Silva, UFPel; Manoel de Souza Maia, UFPel. |
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Título: |
Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Ciencia Rural, v. 46, n. 1, p. 53-39, 2016. |
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DOI: |
https://doi.org/10.1590/0103-8478cr20150296 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding. RESUMO - O presente estudo teve o objetivo de verificar, de forma precisa e detalhada, as respostas da cultivar de azevém anual 'BRS Ponteio', às diferentes frequências de desfolha para a produção de forragem e de sementes. Realizou-se, para tanto, um experimento com delineamento de blocos casualizados com quatro repetições. Foram aplicadas quatro frequências de desfolhas (sem, uma, duas e três) baseando-se no acúmulo térmico, onde se avaliou a taxa de aparecimento de folhas (TApF), o filocrono (F), a taxa de expansão de folhas (TEF), taxa de senescência de folhas (TScF), taxa de expansão dos colmos (TEC), taxa de perfilhamento (TP), duração de vida da folha (DVF), produção de forragem, proporção de lâminas foliares, colmos mais bainhas, material senescente e inflorescências em cada tratamento, bem como a produção de sementes. A segunda desfolha alterou marcadamente as respostas morfogênicas da planta, reduziu as taxas de expansão e aparecimento de folhas e aumentou as taxas de perfilhamento e de expansão do colmo. Esta plasticidade fenotípica manteve a alta produção de sementes da planta e propiciou a colheita de massa de forragem 100% superior à massa colhida no primeiro corte. A terceira desfolha propiciou o aumento de 100% da massa de forragem colhida, todavia, promoveu alterações drásticas e negativas nas características morfogênicas e no rendimento de sementes. MenosABSTRACT - This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding. RESUMO - O presente estudo teve o objetivo de verificar, de forma precisa e detalhada, as respostas da cultivar de azevém anual 'BRS Ponteio', às diferentes frequências de desfolha para a produção de forragem e de sementes. Realizou-se, para tanto, um experimento com delineament... Mostrar Tudo |
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Palavras-Chave: |
Defoliation frequency; Leaf expansion rate; Leaf senescence rate; Lolium multiflorum Lam; Phenotypic. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/153722/1/Cnpgl-2016-CiRural-Relashioship.pdf
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Marc: |
LEADER 03482naa a2200265 a 4500
001 2061400
005 2022-08-22
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/0103-8478cr20150296$2DOI
100 1 $aCUNHA, R. P. da
245 $aRelationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production.$h[electronic resource]
260 $c2016
520 $aABSTRACT - This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding. RESUMO - O presente estudo teve o objetivo de verificar, de forma precisa e detalhada, as respostas da cultivar de azevém anual 'BRS Ponteio', às diferentes frequências de desfolha para a produção de forragem e de sementes. Realizou-se, para tanto, um experimento com delineamento de blocos casualizados com quatro repetições. Foram aplicadas quatro frequências de desfolhas (sem, uma, duas e três) baseando-se no acúmulo térmico, onde se avaliou a taxa de aparecimento de folhas (TApF), o filocrono (F), a taxa de expansão de folhas (TEF), taxa de senescência de folhas (TScF), taxa de expansão dos colmos (TEC), taxa de perfilhamento (TP), duração de vida da folha (DVF), produção de forragem, proporção de lâminas foliares, colmos mais bainhas, material senescente e inflorescências em cada tratamento, bem como a produção de sementes. A segunda desfolha alterou marcadamente as respostas morfogênicas da planta, reduziu as taxas de expansão e aparecimento de folhas e aumentou as taxas de perfilhamento e de expansão do colmo. Esta plasticidade fenotípica manteve a alta produção de sementes da planta e propiciou a colheita de massa de forragem 100% superior à massa colhida no primeiro corte. A terceira desfolha propiciou o aumento de 100% da massa de forragem colhida, todavia, promoveu alterações drásticas e negativas nas características morfogênicas e no rendimento de sementes.
653 $aDefoliation frequency
653 $aLeaf expansion rate
653 $aLeaf senescence rate
653 $aLolium multiflorum Lam
653 $aPhenotypic
700 1 $aPEDROSO, C. E. da S.
700 1 $aMITTELMANN, A.
700 1 $aOLIVEIRA, R. C. de
700 1 $aBOHN, A.
700 1 $aSILVA, J. D. G. da
700 1 $aMAIA, M. de S.
773 $tCiencia Rural$gv. 46, n. 1, p. 53-39, 2016.
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