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THERMODYNAMIC PROPERTIES OF TAMARIND SEEDS (Tamarindus indica L.) REA
Ferreira Junior,Weder N.; Resende,Osvaldo; Silva,Ligia C. de M.; Pinheiro,Gleyce K. I.; Sousa,Kelly A. de.
ABSTRACT Tamarind is used in the food and pharmaceutical industry, and its seed is the main means for the reproduction of this species, thus justifying studies that ensure its post-harvest viability. This research aimed to study the thermodynamic properties of tamarind seeds as a function of the equilibrium moisture content. The experimental data of the water activities were obtained by the indirect static method. The Cavalcanti Mata model was used to determine the thermodynamic properties of tamarind seeds, as it was the model that best fitted the experimental data of the desorption isotherms. The results showed that the thermodynamic properties are influenced by the moisture content and temperature, with an increase in the energy required to remove water...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Equilibrium moisture content; Enthalpy; Gibbs free energy.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600740
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USE OF AIC AND BIC IN DESORPTION ISOTHERMS OF TAMARIND SEEDS (Tamarindus indica L.) REA
Ferreira Junior,Weder N.; Resende,Osvaldo; Pinheiro,Gleyce K. I.; Silva,Ligia C. de M.; Costa,Eduarda R..
ABSTRACT The knowledge of hygroscopicity is essential for the storage of tamarind seeds, but there is a limitation of a judicious statistical parameter to define the best mathematical model to adjust the isotherms of plant products. Therefore, this study aimed to determine the desorption isotherms of tamarind seeds and test the Akaike information criterion (AIC) and Schwarz Bayesian information criterion (BIC) for choosing the best mathematical model. Seeds with an initial moisture content of 21.00 ± 0.10% dry basis (db) were dried at 45 °C until they reached moisture contents of 17.27 ± 0.10, 15.04 ± 0.16, 14.14 ± 0.06, 12.41 ± 0.17, and 10.52 ± 0.12% db. The water activity of the product was determined by the static-indirect method at temperatures of 10,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Water activity; Hygroscopicity; Cavalcanti Mata.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400511
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Drying kinetics of yellow mombin (Spondias mombin L.) epicarp AGRIAMBI
Pinheiro,Gleyce K. I.; Oliveira,Daniel E. C. de; Ferreira Junior,Weder N.; Resende,Osvaldo.
ABSTRACT Yellow mombin (Spondias mombin L.) fruits have relevant characteristics for industrialization and exhibit a pleasant aroma and sour-sweet taste, with significant amounts of vitamin A and carotenoids in their epicarp. The objective was to fit different mathematical models to the experimental data, using as criteria to select the best model - the Akaike Information Criteria (AIC) and Schwarz’s Bayesian Information Criteria (BIC), as well as to evaluate the effective diffusion coefficient and to determine the activation energy for yellow mombin epicarp submitted to different drying conditions. The experiment was carried out at the Instituto Federal de Educação, Ciência e Tecnologia Goiano, Brazil The epicarp of yellow mombin fruits with initial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mathematical modeling; AIC; BIC; Midilli model.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000200121
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