Data/hora: 10/06/2024 10:16:54

Provedor de dados: | 91
País: | Brazil
Título: | Convective drying kinetics of osmotically pretreated papaya cubes
Autores: | Ferreira,João P. de L.; Castro,Deise S. de; Moreira,Inacia dos S.; Silva,Wilton P. da; Figueirêdo,Rossana M. F. de; Queiroz,Alexandre J. de M.
Data: | 2020-03-01
Ano: | 2020
Palavras-chave: | Carica papaya; Osmotic dehydration; Effective diffusivity.
Resumo: | ABSTRACT This study assessed the fitting of mathematical models to the convective drying kinetics of osmotically pre-dehydrated papaya cubes. Papaya cubes were subjected to osmotic dehydration in sucrose solutions at 40 and 50 ºBrix, at temperatures of 50 and 60 ºC, followed by complementary convective drying in forced air circulation oven under three temperatures (50, 60 and 70 °C) and constant air velocity of 1.0 m s-1. Ten thin-layer drying mathematical models were fitted to the experimental data. The increase in air temperature and the decrease in osmotic solution concentration resulted in increased water removal rate. Based on the statistical indices, the Two Terms model was the one that best described the drying kinetics of the samples for all evaluated conditions. The effective diffusion coefficients increased with the elevation of air temperature, ranging from 1.766 x 10-10 to 3.910 x 10-6 m2 s-1, whereas the convective mass transfer coefficients ranged from 3.910 x 10-7 to 1.201 x 10-6 m s-1 with Biot number from 0.001 to 12.500.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300200
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v24n3p200-208
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.24 n.3 2020
Fonte: | info:eu-repo/semantics/openAccess