Inicio > Tecnología, ingeniería, agricultura > Tecnología: cuestiones generales > Modelagem e otimização da secagem em leito fluidizado de ar quente de cubos de cenoura
Modelagem e otimização da secagem em leito fluidizado de ar quente de cubos de cenoura

Modelagem e otimização da secagem em leito fluidizado de ar quente de cubos de cenoura

Arvind Kumar / Ram Krishna Pandey

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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Tecnología: cuestiones generales
ISBN:
9786209132643
59,14 €
IVA incluido
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A cenoura é uma das importantes hortaliças cultivadas em todo o mundo para consumo fresco. A secagem é o método mais importante para a conservação das cenouras, com o objetivo final de melhorar a capacidade de armazenamento através da redução do seu teor de humidade. O tempo total de secagem reduziu consideravelmente com o aumento da temperatura de secagem de 55 para 75 °C. Verificou-se que não havia um período de taxa constante, observando-se apenas um período de taxa decrescente em todas as condições experimentais. O modelo de Page descreveu satisfatoriamente o comportamento de secagem dos cubos de cenoura. A taxa de reidratação aumentou com o aumento da temperatura de secagem e diminuiu com o aumento da velocidade do ar e do peso da amostra. A dureza aumentou com o aumento da temperatura e do peso da amostra, enquanto diminuiu com o aumento da velocidade do ar. Os valores ótimos de temperatura, velocidade do ar e peso da amostra para a taxa de reidratação foram 148,83 °C, 13,98 m/s e 881,04 g, respetivamente, para a dureza, 29,33 ˚C, 1,11 m/s e 558,02, respetivamente, para o valor L*, 170,43 ˚C, -8,44 m/s e 242,87 g, respetivamente, para o valor a*, 23,3 ˚C, 4 m/s e 1457,1 g, respetivamente, e para o valor b*, os valores ótimos das variáveis independentes foram 23,99 ˚C, 3,18 m/s e 116,27 g, respetivamente.

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