Data/hora: 13/06/2024 20:02:16

Provedor de dados: | 117
País: | Chile
Título: | Kinetic Study of Convective Drying of Blueberry Variety O’neil (Vaccinium corymbosum L.)
Autores: | Vega-Gálvez,A; Lemus-Mondaca,R; Tello-Ireland,C; Miranda,M; Yagnam,F.
Data: | 2009-06-01
Ano: | 2009
Palavras-chave: | Blueberry; GAB; Drying; Modeling; Statistical tests.
Resumo: | The aim of this research was to study and to model the drying kinetics of the blueberry Vaccinium corymbosum L.) at three temperatures (60, 70 and 80 ºC) with an airflow of 2.0 ± 0.2 m s-1. Modeling of the desorption isotherm was carried out with the GAB (Guggenheim, Anderson and de Boer) equation, showing a good fit to experimental moisture data, giving as a result a monolayer moisture level of 0.084 g water g-1 dm. Newton, Henderson-Pabis, Page, Modified Page and Logarithmic mathematical models were applied in the study and in the modeling of the drying kinetics of this fruit. Kinetic parameters k of each model showed dependence on temperature, and were evaluated by an Arrhenius-type equation, with an activation energy of between 36.2 and 54.5 kJ mol-1. Logarithmic and Modified Page models gave the best fits for each drying curve, based on the statistical test determination coefficient, sum square error, root mean sum errors and Chi-square. In consequence, both models are excellent tools for estimating the drying time of this product.
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200006
Editor: | Instituto de Investigaciones Agropecuarias, INIA
Formato: | text/html
Fonte: | Chilean journal of agricultural research  v.69 n.2 2009