CINÉTICA DE SECAGEM DE GRÃOS DE QUINOA (Chenopodium quinoa W.)

Moscon, Eder Stolben; Martín, Samuel; Spehar, Carlos Roberto; Devilla, Ivano Alessandro; Junior, Francisco Rodolfo

doi:10.13083/reveng.v25i4.773

Cited by 20 publications

(18 citation statements)

References 11 publications

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“…Several researches were created with the objective of knowing the drying kinetics of fruits and agricultural products: apple banana (Silva et al, 2009), leaf of aroeira (Goneli et al, 2014); star fruit (Leite et al, 2016); coffee (Siqueira, 2017); quinoa grains (Moscon et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Determination of Volumetric Contraction and Drying Kinetics of the Dryed Banana

Souza¹,

Andrade²,

Rios³

2019

Theor Appl Eng

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Banana (Musa spp.) is one of the most nutritious and consumed fruits, especially in tropical countries. The drying of the fruit is an alternative against the injuries suffered, mainly during the post-harvest process. Thus, the knowledge of the physical properties of the product that is intended to be processed has a big importance for the dimensioning of equipment. Therefore, the objective of this work was to study the drying kinetics of the banana, transforming it into dried banana, besides evaluating the volumetric contraction suffered during drying. The bananas were dried in an oven at temperatures of 70, 60 and 50 ºC. The volumetric measurements were carried out before and after drying to determine the volumetric contraction during the process. After drying, the experimental data were modeled by nonlinear regression analysis by the Quase-Newton method, to adjust 4 mathematical models of moisture ratio and 5 mathematical models of volumetric contraction. Among the models tested, the best fit for the prediction of the Moisture Ratio was the exponential model, and for the Volumetric Contraction was the modified BALA and WOOD model.

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Section: Introductionmentioning

confidence: 99%

Determination of Volumetric Contraction and Drying Kinetics of the Dryed Banana

Souza¹,

Andrade²,

Rios³

2019

Theor Appl Eng

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“…Já para a espécie C. surinamensis, o modelo logarítmico foi o que melhor se ajustou a esse parâmetro nas três temperaturas avaliadas, com valores máximos de 0,00030 (Tabela 2). Sendo assim, esses modelos corroboram a relação de quanto menor o valor encontrado para SE, melhor o ajuste do modelo (SIQUEIRA et al, 2013;MOSCON et al, 2017).…”

Section: Resultsunclassified

“…Para Moscon et al (2017), a seleção e a recomendação do melhor modelo fundamentam-se também na simplicidade de aplicação e no número de parâmetros favoráveis. Embora os modelos Logarítmico e Midilli tenham apresentado melhores resultados na representação da cinética de secagem das sementes de duas espécies de andiroba nas condições nas quais este trabalho foi realizado, o modelo selecionado foi o Logarítmico, tendo por base, além dos coeficientes estatísticos favoráveis, a facilidade de uso, por ser de simples aplicação.…”

Section: Dados Semelhantes Foram Observados Porunclassified

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Modelagem Matemática Das Curvas De Secagem De Sementes De Duas Espécies De Andiroba

Mendonça

Silva

Sousa

et al. 2019

Reveng

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A quantidade de óleo extraível das sementes de andiroba é diretamente influenciada pelo seu teor de água. Dessa forma, conhecer a cinética de secagem de sementes de andiroba é de suma importância no processo de otimização de sua prensagem e na qualidade físico-química do óleo produzido. Nesse aspecto, o objetivo deste trabalho foi descrever a cinética de secagem das sementes de duas espécies de andiroba (Carapa surinamensis e Carapa guianensis) usando estufa de ventilação forçada de ar a 40, 50 e 60 oC, ajustando os dados experimentais a seis modelos matemáticos. Os resultados mostraram que o teor de água de equilíbrio variou entre 5,32 a 2,70% b.u. e 5,35 a 2,84% b.u. para as sementes de C. surinamensis e C. guianensis, respectivamente. O teor de água e o tempo de secagem das sementes da C. surinamensis foram menores comparados à C. guianensis, nas três temperaturas avaliadas. O modelo Logarítmico foi o que representou de forma eficiente as curvas de secagem para as diferentes temperaturas, além de ser de fácil aplicação.

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“…Although most of these models under the drying conditions of this study resulted in high R 2 values, this coefficient alone is not determinant for the choice of nonlinear models fitted in the drying of C. pachystachya leaves. Complementary analyses with other parameters are necessary, as those used in studies with different plant materials and drying conditions (Darvishi et al, 2014;Camicia et al, 2015;Rosa et al, 2017;Moscon et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Drying Kinetics of Cecropia pachystachya Leaves

et al. 2019

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The species Cecropia pachystachya has important medicinal purposes and its leaves have been used in pharmaceutical research, so the drying of this product may help maintaining its chemical properties and ensure safe storage. Thus, the objective of this study was to select mathematical models to represent the drying kinetics of Cecropia pachystachya leaves, determine the effective diffusion coefficient and obtain the activation energy during drying at different temperatures. Leaves were dried in an oven under five temperature conditions (40, 50, 60 and 70 °C), until reaching hygroscopic equilibrium moisture content. Among the models analyzed, the Logarithmic model best represented the drying kinetics at temperatures of 40 and 60 °C, whereas Modified Henderson & Pabis and Dryceleaves represented temperatures of 50 and 70 °C, respectively. The effective diffusion coefficient increased with increasing air temperature, and the activation energy for liquid diffusion in the drying process was 64.53 kJ mol-1.

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CINÉTICA DE SECAGEM DE GRÃOS DE QUINOA (Chenopodium quinoa W.)

Cited by 20 publications

References 11 publications

Determination of Volumetric Contraction and Drying Kinetics of the Dryed Banana

Determination of Volumetric Contraction and Drying Kinetics of the Dryed Banana

Modelagem Matemática Das Curvas De Secagem De Sementes De Duas Espécies De Andiroba

Drying Kinetics of Cecropia pachystachya Leaves

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