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https://hdl.handle.net/11499/9038
Title: | Drying kinetics of onion (Allium cepa L.) slices with convective and microwave drying | Authors: | Demiray, Engin Şeker, Anıl Tülek, Yahya |
Keywords: | Activation energy Diffusion Heat convection Microwave heating Microwaves Moisture Arrhenius equation Convective drying Drying condition Drying technique Effect of temperature Effective moisture diffusivity Exponential expression Temperature range Drying |
Publisher: | Springer Verlag | Abstract: | Onion slices were dried using two different drying techniques, convective and microwave drying. Convective drying treatments were carried out at different temperatures (50, 60 and 70 °C). Three different microwave output powers 328, 447 and 557 W were used in microwave drying. In convective drying, effective moisture diffusivity was estimated to be between 3.49 × 10-8 and 9.44 × 10-8 m2 s-1 within the temperature range studied. The effect of temperature on the diffusivity was described by the Arrhenius equation with an activation energy of 45.60 kJ mol-1. At increasing microwave power values, the effective moisture diffusivity values ranged from 2.59 × 10-7 and 5.08 × 10-8 m2 s-1. The activation energy for microwave drying of samples was calculated using an exponential expression based on Arrhenius equation. Among of the models proposed, Page’s model gave a better fit for all drying conditions used. © 2016, Springer-Verlag Berlin Heidelberg. | URI: | https://hdl.handle.net/11499/9038 https://doi.org/10.1007/s00231-016-1943-x |
ISSN: | 0947-7411 |
Appears in Collections: | Mühendislik Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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