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Registros recuperados: 7
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Concentration of pineapple juice by reverse osmosis: physicochemical characteristics and consumer acceptance Ciênc. Tecnol. Aliment.
Couto,Daniel Simões; Cabral,Lourdes Maria Corrêa; Matta,Virgínia Martins da; Deliza,Rosires; Freitas,Daniela de Grandi Castro.
Reverse osmosis has been used for the concentration of fruit juices with promising considering the quality of the obtained products. The objective of this study was to concentrate single strength pineapple juice by reverse osmosis. The concentration was carried out with polyamide composite membranes in a 0.65 m² plate and frame module at 60 bar transmembrane pressure at 20 °C. The permeate flux was 17 L.hm-2. The total soluble solid content of the juice increased from 11 to 31 °Brix corresponding to a Volumetric Concentration Factor (VCF) of 2.9. The concentration of soluble solids, total solids, and total acidity increased proportionally to FCV. The concentrated juice and three commercial concentrated pineapple juices were evaluated regarding preference...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cold concentration; Fruit juice; Preference; Consumers.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000400012
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Industrialized cashew juices: variation of ascorbic acid and other physicochemical parameters Ciênc. Tecnol. Aliment.
Pereira,Christiane de Queiroz; Lavinas,Flávia Conde; Lopes,Maria Lúcia Mendes; Valente-Mesquita,Vera Lúcia.
Commercial cashew apple juice is widely accepted in the Brazilian market. Cashew apple has high content of ascorbic acid, an important nutrient to human beings. Ascorbic acid content in food can be affected by processing and storage conditions. Commercial cashew apple juice samples, ready-to-drink and concentrated, were analyzed. The ascorbic acid content, total titratable acidity, total soluble solids, and pH of the juices were determined during storage at 4 °C after the containers were opened. The ascorbic acid content presented a great variability among the samples analyzed ranging from 37.3 to 46.3 mg.100 mL-1 in ready-to-drink juices and from 75.7 to 152 mg.100 mL-1 in concentrated juices. The storage of commercial cashew apple juices for 48 hours at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit juice; Cashew apple; Storage; Stability.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612008000500040
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Clarification of pineapple juice by microfiltration Ciênc. Tecnol. Aliment.
Carvalho,Lucia Maria Jaeger de; Silva,Carlos Alberto Bento da.
In the present work, pineapple juice was first hydrolyzed with a commercial pectinase (Ultrazym 100 G) and then clarified by microfiltration. A tubular polyethersulfone membrane with an average cut-off of 0.3 µm and a total effective filtration area of 0.05 m² was applied. The transmembrane pressures were 1.5 and 3.0 bar, respectively, and the processes was conducted at room temperature. The results showed that the pineapple juice permeate fluxes were of 57.77 L/m²/hours (1.5 bar) and 46.85 L/m²/hours (3.0 bar). Concentration polarization and possibly fouling occurred during the processes. The best clarified juice fluxes were obtained when low transmembrane pressures (1.5 bar) were applied.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit juice; Enzymatic hydrolysis; Membrane processes.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612010000300040
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Nutritional value of organic acid lime juice (Citrus latifolia T.), cv. Tahiti Ciênc. Tecnol. Aliment.
Rangel,Carolina Netto; Carvalho,Lucia Maria Jaeger de; Fonseca,Renata Borchetta Fernandes; Soares,Antonio Gomes; Jesus,Edgar Oliveira de.
Acid lime can be used as fresh fruit or as juice to increase the flavor of drinks. Therefore, it is necessary to analyze organic acid lime nutritional composition in order to evaluate if there are important differences among those conventionally produced. No significant differences in total titrable acidity, pH, ascorbic acid, sucrose, calcium, and zinc were found between the acid lime juice from organic biodynamic crops and conventional crops. However, the organic biodynamic fruits presented higher peel percentage than the conventional ones leading to lower juice yield. On the other hand, fructose, glucose, total soluble solids contents, potassium, manganese, iron, and copper were higher in the conventional samples. These results indicated few nutritional...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical and chemical composition; Fruit juice; Organic crops; Citrus latifolia.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000400014
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Rheological and thermophysical properties of blackberry juice Ciênc. Tecnol. Aliment.
Cabral,Renato Alexandre Ferreira; Orrego-Alzate,Carlos Eduardo; Gabas,Ana Lúcia; Telis-Romero,Javier.
Rheological and thermophysical properties were determined for blackberry juice, which was produced from blackberry fruit at 9.1 ± 0.5 °Brix and density of 1.0334 ± 0.0043 g cm-3. The concentration process was performed using a roto evaporator, under vacuum, to obtain concentrated juice at about 60 °Brix. In order to obtain different concentrations, concentrated juice was diluted with distilled water. Rheological measurements were carried out using a Rheotest 2.1 Searle type rheometer. In the tested ranges, the samples behaved as pseudoplastic fluids, and the Power-Law model was satisfactorily fitted to the experimental data. The friction factor was measured for blackberry juice in laminar flow conditions of pseudoplastic behavior. Thermal conductivity,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit juice; Rheology; Thermal conductivity; Thermal properties.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612007000300025
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The Japanese Market for Imported Fruit Juices AgEcon
Feleke, Shiferaw T.; Kilmer, Richard L..
The objectives were to analyze the competitiveness of countries exporting fruit juices into Japan and simulate the effect of the negative Japanese population growth rate on fruit juice demand. The relative price version of the Rotterdam demand model was estimated for orange, grapefruit, other citrus, apple, pineapple and grape juices. Results indicate that most exporters can’t increase market share through price reductions. Product promotion and product differentiation is a more plausible option. The growth of fruit juice demand in Japan is expected to decrease over the period 2006 through 2020 for 11 of the 18 fruit juice/country combinations because of negative population growth rate.
Tipo: Journal Article Palavras-chave: Competitiveness; Fruit juice; Japan; Rotterdam model; Population decline; Agribusiness; Agricultural and Food Policy; International Development; Q1.
Ano: 2009 URL: http://purl.umn.edu/92551
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Global Competition for the Japanese Fruit Juice Market: A Uniform Substitute Demand Analysis AgEcon
Feleke, Shiferaw T.; Kilmer, Richard L..
This study analyzes the competitiveness of countries exporting fruit juices into Japan through market structure analysis (MSA) within the context of the theory of consumer demand using the relative price version of the Rotterdam model and the block-wise dependent uniform substitute Rotterdam model. The models were estimated for six different types of fruit juices (orange, grapefruit, other citrus, apple, pineapple and grape juices imported from 18 countries) on monthly per capita data over the period December, 1995, to May, 2005, using the non-linear least squares (LSQ) in the Time Series Processor (TSP) program. Results indicate that the market structure underlying the competition for the Japanese fruit juice market is non-uniformly competitive, and most...
Tipo: Conference Paper or Presentation Palavras-chave: Competitiveness; Fruit juice; Japan; Relative price version; Demand and Price Analysis.
Ano: 2007 URL: http://purl.umn.edu/9997
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