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| Sousa,Elisabete P. de; Figueirêdo,Rossana M. F. de; Gomes,Josivanda P.; Queiroz,Alexandre J. de M.; Castro,Deise S. de; Lemos,Danielle M.. |
| ABSTRACT The aim of this work was to study the drying kinetics of pequi pulp by convective drying at different conditions of temperature (50, 60, 70 and 80 °C) and thickness (0.5, 1.0 and 1.5 cm) at the air speed of 1.0 m s-1, with no addition of adjuvant. The experimental data of pequi pulp drying kinetics were used to plot drying curves and fitted to the models: Midilli, Page, Henderson & Pabis and Newton. Effective diffusivity was calculated using the Fick’s diffusion model for a flat plate. It was found that, with increasing thickness, the drying time increased and, with increasing temperature, the drying time was reduced. The Midilli model showed the best fit to the experimental data of pequi pulp drying at all temperatures and thicknesses,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caryocar coriaceum Wittm; Thickness; Convective drying. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700493 |
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| 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.. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carica papaya; Osmotic dehydration; Effective diffusivity. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300200 |
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