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标题：Pós-colheita de folhas de Solanum paniculatum L. Parte I: Cinética de secagem
其他标题：Post-harvesting of Solanum paniculatum L. leaves. Part I: Drying kinetics
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作者：Martins, Elton A. S. ; Goneli, André L. D. ; Gonçalves, Alexandre A. 等
期刊名称：Revista Brasileira de Engenharia Agrícola e Ambiental
印刷版ISSN：1415-4366
电子版ISSN：1807-1929
出版年度：2020
卷号：24
期号：8
页码：560-566
DOI：10.1590/1807-1929/agriambi.v24n8p560-566
出版社：Departamento de Engenharia Agrícola - UFCG / Cnpq
摘要：Solanum paniculatum L. (jurubeba) is among the numerous medicinal plants used by the Brazilian population, and the use of its leaves is quite popular, in the form of tea, as a remedy against hangovers after excessive consumption of alcohol and food, besides being used in the form of ointments as healing agent and also in the treatment of liver and digestive problems. Leaves of medicinal plants usually have a high moisture content, requiring its reduction by drying, so that the product can be stored safely until its processing. The objective of this study was to evaluate the drying kinetics of jurubeba leaves and to determine the effective diffusion coefficient and activation energy during drying. Jurubeba leaves were dried at different air temperatures (30, 40, 50, 60 and 70 °C) and speed (0.4 and 0.8 m s-1). The Midilli model satisfactorily fitted to the observed data of drying of jurubeba leaves for all air conditions. Increasing the drying air temperature and speed reduced the drying time and increased the effective diffusion coefficient. For the air temperature range from 40 to 70 °C, as the drying air speed increases, the activation energy for the drying of the jurubeba leaves is reduced.
关键词：jurubeba;energia de ativação;velocidade do ar;taxa de redução de água;modelo de Midilli
其他关键词：Jurubeba;activation energy;air speed;moisture reduction rate;Midilli Model