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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: |
17/05/2024 |
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Data da última atualização: |
17/05/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CABRAL, L. M. C.; DORNIER, M.; M. CISSE; JESUS, D.; MATTA, V. M. da. |
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Afiliação: |
LOURDES MARIA CORREA CABRAL, CTAA; M DORNIER, CIRAD-FHIOR; CISSE, M., CIRAD-FHIOR; D. JESUS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; VIRGINIA MARTINS DA MATTA, CTAA. |
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Título: |
Concentration of orange juice by coupling reverse osmosis and osmotic evaporation. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 6., 2005, Campinas. Ciência de alimentos abrindo caminhos para o desenvolvimento científico, tecnológico e industrial. Campinas: Unicamp, 2005. 1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
Ref. 1933. |
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Conteúdo: |
Reverse osmosis (RO) and osmotic evaporation (OE) are membrane concentration processes that can be used for fruit juice concentration while maintaining its nutritional and sensorial properties as they are often conducted at room temperature. RO is a pressure driven process used when low molecular weight solutes such as inorganic salts or small organic molecules as glucose have to be separated from a solvent. One of the most important advantage of RO is its low energy consumption. OE allows the selective water vapour extraction from a diluted aqueous solution (fruit juice) to a concentrated solution (brine) due to the water activity gradient between these two streams that are separated by a hydrophobic membrane. This work aimed to study the concentration of orange juice by reverse osmosis coupled with osmotic evaporation. Orange juice from Brazil, at 11°Brix was used as raw material. The juice was previously concentrated by reverse osmosis at Embrapa, Brasil in a pilot scale equipment using a composite membrane with 95% NaCl rejection and a transmembrane pressure of 60 Bar. The pre concentrated juice was frozen and sent to France, where it was concentrated by osmotic evaporation at Cirad, in a lab scale system composed by two independent circuits, one for the juice and the other for the brine. A PFTE 0.2 µm flat sheet membrane was used. A calcium chloride solution was used as brine. During the reverse osmosis experiments, the permeate flux was about 28 kg/hm2. The maximum concentration factor reached was 5.8 resulting in a 35.7ºBrix juice. The evaporatory flux during osmotic concentration trials ranged from 12 kg/hm2 to 7 kg/hm2 allowing the concentration of the juice rise up to 61°Brix. The concentration factor reached by coupling reverse osmosis and osmotic evaporation is interesting and suggest the applicability of the membrane technologies to fruit juice concentration. MenosReverse osmosis (RO) and osmotic evaporation (OE) are membrane concentration processes that can be used for fruit juice concentration while maintaining its nutritional and sensorial properties as they are often conducted at room temperature. RO is a pressure driven process used when low molecular weight solutes such as inorganic salts or small organic molecules as glucose have to be separated from a solvent. One of the most important advantage of RO is its low energy consumption. OE allows the selective water vapour extraction from a diluted aqueous solution (fruit juice) to a concentrated solution (brine) due to the water activity gradient between these two streams that are separated by a hydrophobic membrane. This work aimed to study the concentration of orange juice by reverse osmosis coupled with osmotic evaporation. Orange juice from Brazil, at 11°Brix was used as raw material. The juice was previously concentrated by reverse osmosis at Embrapa, Brasil in a pilot scale equipment using a composite membrane with 95% NaCl rejection and a transmembrane pressure of 60 Bar. The pre concentrated juice was frozen and sent to France, where it was concentrated by osmotic evaporation at Cirad, in a lab scale system composed by two independent circuits, one for the juice and the other for the brine. A PFTE 0.2 µm flat sheet membrane was used. A calcium chloride solution was used as brine. During the reverse osmosis experiments, the permeate flux was about 28 kg/hm2. The maximum con... Mostrar Tudo |
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Thesagro: |
Osmose; Produto de Origem Vegetal; Suco de Laranja; Tecnologia de Alimento. |
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Categoria do assunto: |
Q Alimentos e Nutrição Humana |
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Marc: |
LEADER 02712nam a2200217 a 4500
001 2164314
005 2024-05-17
008 2005 bl uuuu u00u1 u #d
100 1 $aCABRAL, L. M. C.
245 $aConcentration of orange juice by coupling reverse osmosis and osmotic evaporation.$h[electronic resource]
260 $aIn: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 6., 2005, Campinas. Ciência de alimentos abrindo caminhos para o desenvolvimento científico, tecnológico e industrial. Campinas: Unicamp, 2005. 1 CD-ROM.$c2005
500 $aRef. 1933.
520 $aReverse osmosis (RO) and osmotic evaporation (OE) are membrane concentration processes that can be used for fruit juice concentration while maintaining its nutritional and sensorial properties as they are often conducted at room temperature. RO is a pressure driven process used when low molecular weight solutes such as inorganic salts or small organic molecules as glucose have to be separated from a solvent. One of the most important advantage of RO is its low energy consumption. OE allows the selective water vapour extraction from a diluted aqueous solution (fruit juice) to a concentrated solution (brine) due to the water activity gradient between these two streams that are separated by a hydrophobic membrane. This work aimed to study the concentration of orange juice by reverse osmosis coupled with osmotic evaporation. Orange juice from Brazil, at 11°Brix was used as raw material. The juice was previously concentrated by reverse osmosis at Embrapa, Brasil in a pilot scale equipment using a composite membrane with 95% NaCl rejection and a transmembrane pressure of 60 Bar. The pre concentrated juice was frozen and sent to France, where it was concentrated by osmotic evaporation at Cirad, in a lab scale system composed by two independent circuits, one for the juice and the other for the brine. A PFTE 0.2 µm flat sheet membrane was used. A calcium chloride solution was used as brine. During the reverse osmosis experiments, the permeate flux was about 28 kg/hm2. The maximum concentration factor reached was 5.8 resulting in a 35.7ºBrix juice. The evaporatory flux during osmotic concentration trials ranged from 12 kg/hm2 to 7 kg/hm2 allowing the concentration of the juice rise up to 61°Brix. The concentration factor reached by coupling reverse osmosis and osmotic evaporation is interesting and suggest the applicability of the membrane technologies to fruit juice concentration.
650 $aOsmose
650 $aProduto de Origem Vegetal
650 $aSuco de Laranja
650 $aTecnologia de Alimento
700 1 $aDORNIER, M.
700 1 $aM. CISSE
700 1 $aJESUS, D.
700 1 $aMATTA, V. M. da
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Embrapa Agroindústria de Alimentos (CTAA) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
15/08/2011 |
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Data da última atualização: |
15/08/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 3 |
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Autoria: |
MORAIS, L. A. S. de. |
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Afiliação: |
LILIA APARECIDA SALGADO DE MORAIS, CNPMA. |
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Título: |
Controle fitossanitário em assentamento de base agroecológica: um resgate do conhecimento tradicional. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Agroecologia, Cruz Alta, v. 6, n. 1, p. 57-66, 2011. |
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Idioma: |
Português |
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Conteúdo: |
RESUMO O objetivo deste trabalho foi resgatar o conhecimento tradicional de pequenos produtores sobre técnicas alternativas utilizadas no controle fitossanitário, bem como avaliar a percepção dos mesmos sobre o horário de coleta, secagem e armazenamento das plantas utilizadas. O trabalho de campo foi realizado no Assentamento de Base Agroecológica Sepé-Tiaraju (Serra Azul-SP). Utilizou-se o método Bola de Neve resultando em dez entrevistados. Realizaram-se entrevistas estruturadas e semi-estruturadas. Foram citadas as plantas: pimenta do reino (Piper nigrum), pimenta malagueta (Capsicum frutescens), alho (Allium sativum), fumo de rolo (Nicotiana tabacum), cebola (A. cepa), pau d'alho (Gallesia integrifolia), eucalipto (Eucalyptus spp), cravo de defunto (Tagetes spp.), feijão de porco (Canavalia ensiformis) e louro (Laurus nobilis). Nem todas as receitas apresentam resultados satisfatórios, porém, as que são eficazes são repassadas para os demais observando-se a transmissão horizontal do conhecimento empírico. Concluiu-se que há um constante resgate pelos assentados de práticas existentes antes do advento dos agrotóxicos. ABSTRACT The aim of this work was to rescue the traditional knowledge of small farmers about alternatives techniques used by the same on control of plagues and diseases of plants, and evaluate the perception of informers about harvest time, dry and storage conditions of used plants. The collect of data was accomplished on Settlement of agroecological base Sepé-Tiaraju, on municipal district of Serra Azul-SP. The Snowball Method was used to choose the informers (10 people). Structured and semi-structured interviews had been carried out. The plants cited were: black pepper (Piper nigrum), chili pepper (Capsicum frutescens), garlic (Allium sativum), tobacco (Nicotiana tabacum), onion (Allium cepa), ajo tree (Gallesia integrifolia), eucalyptus (Eucalyptus spp.), marigold (Tagetes spp.), Jack-bean (Canavalia ensiformis) and bay laurel (Laurus nobilis). All the techniques that present positive results are passed on to the others, observing an horizontal transmission of empirical knowledge. There is a constant rescue of traditional techniques that were used before the use of pesticides. MenosRESUMO O objetivo deste trabalho foi resgatar o conhecimento tradicional de pequenos produtores sobre técnicas alternativas utilizadas no controle fitossanitário, bem como avaliar a percepção dos mesmos sobre o horário de coleta, secagem e armazenamento das plantas utilizadas. O trabalho de campo foi realizado no Assentamento de Base Agroecológica Sepé-Tiaraju (Serra Azul-SP). Utilizou-se o método Bola de Neve resultando em dez entrevistados. Realizaram-se entrevistas estruturadas e semi-estruturadas. Foram citadas as plantas: pimenta do reino (Piper nigrum), pimenta malagueta (Capsicum frutescens), alho (Allium sativum), fumo de rolo (Nicotiana tabacum), cebola (A. cepa), pau d'alho (Gallesia integrifolia), eucalipto (Eucalyptus spp), cravo de defunto (Tagetes spp.), feijão de porco (Canavalia ensiformis) e louro (Laurus nobilis). Nem todas as receitas apresentam resultados satisfatórios, porém, as que são eficazes são repassadas para os demais observando-se a transmissão horizontal do conhecimento empírico. Concluiu-se que há um constante resgate pelos assentados de práticas existentes antes do advento dos agrotóxicos. ABSTRACT The aim of this work was to rescue the traditional knowledge of small farmers about alternatives techniques used by the same on control of plagues and diseases of plants, and evaluate the perception of informers about harvest time, dry and storage conditions of used plants. The collect of data was accomplished on Settlement of agroecological base Se... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia; Controle alternativo; Defensivos naturais. |
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Thesagro: |
Agricultura familiar; Assentamento; Controle biológico; Praga de planta. |
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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/39838/1/2011AP08.pdf
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Marc: |
LEADER 02921naa a2200205 a 4500
001 1898000
005 2011-08-15
008 2011 bl uuuu u00u1 u #d
100 1 $aMORAIS, L. A. S. de
245 $aControle fitossanitário em assentamento de base agroecológica$bum resgate do conhecimento tradicional.$h[electronic resource]
260 $c2011
520 $aRESUMO O objetivo deste trabalho foi resgatar o conhecimento tradicional de pequenos produtores sobre técnicas alternativas utilizadas no controle fitossanitário, bem como avaliar a percepção dos mesmos sobre o horário de coleta, secagem e armazenamento das plantas utilizadas. O trabalho de campo foi realizado no Assentamento de Base Agroecológica Sepé-Tiaraju (Serra Azul-SP). Utilizou-se o método Bola de Neve resultando em dez entrevistados. Realizaram-se entrevistas estruturadas e semi-estruturadas. Foram citadas as plantas: pimenta do reino (Piper nigrum), pimenta malagueta (Capsicum frutescens), alho (Allium sativum), fumo de rolo (Nicotiana tabacum), cebola (A. cepa), pau d'alho (Gallesia integrifolia), eucalipto (Eucalyptus spp), cravo de defunto (Tagetes spp.), feijão de porco (Canavalia ensiformis) e louro (Laurus nobilis). Nem todas as receitas apresentam resultados satisfatórios, porém, as que são eficazes são repassadas para os demais observando-se a transmissão horizontal do conhecimento empírico. Concluiu-se que há um constante resgate pelos assentados de práticas existentes antes do advento dos agrotóxicos. ABSTRACT The aim of this work was to rescue the traditional knowledge of small farmers about alternatives techniques used by the same on control of plagues and diseases of plants, and evaluate the perception of informers about harvest time, dry and storage conditions of used plants. The collect of data was accomplished on Settlement of agroecological base Sepé-Tiaraju, on municipal district of Serra Azul-SP. The Snowball Method was used to choose the informers (10 people). Structured and semi-structured interviews had been carried out. The plants cited were: black pepper (Piper nigrum), chili pepper (Capsicum frutescens), garlic (Allium sativum), tobacco (Nicotiana tabacum), onion (Allium cepa), ajo tree (Gallesia integrifolia), eucalyptus (Eucalyptus spp.), marigold (Tagetes spp.), Jack-bean (Canavalia ensiformis) and bay laurel (Laurus nobilis). All the techniques that present positive results are passed on to the others, observing an horizontal transmission of empirical knowledge. There is a constant rescue of traditional techniques that were used before the use of pesticides.
650 $aAgricultura familiar
650 $aAssentamento
650 $aControle biológico
650 $aPraga de planta
653 $aAgroecologia
653 $aControle alternativo
653 $aDefensivos naturais
773 $tRevista Brasileira de Agroecologia, Cruz Alta$gv. 6, n. 1, p. 57-66, 2011.
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