Determining of moisture diffusivity and activation energy in drying of apricots

In this study, Fick's second law was used as a major equation to calculate the moisture diffusivity for apricot fruit with some simplification. Drying experiments were carried out at the air temperatures of 40, 50, 60, 70, and 80 deg C and the drying air velocity of 1, 1.5 and 2 m/s. The experi...

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Bibliographic Details
Published in:Research in Agricultural Engineering (Praha) 2009-09, Vol.55 (3), p.114-120
Main Authors: Mirzaee, E.,University of Tehran, Karaj (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering, Rafiee, S.,University of Tehran, Karaj (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering, Keyhani, A.,University of Tehran, Karaj (Iran Islamic Republic). Dept. of Agricultural Machinery Engineering, Emam-Djomeh, Z.,University of Tehran, Karaj (Iran Islamic Republic). Dept. of Food Science
Format: Article
Language:English
Subjects:
ABRICOT
Activation energy
AIR TEMPERATURE
ALBARICOQUE
APRICOTS
Diffusivity
DRYING
DURACION
DURATION
DUREE
effective moisture diffusivity
Food preservation
Fruits
http://www.fao.org/aos/agrovoc#c_230
http://www.fao.org/aos/agrovoc#c_2402
http://www.fao.org/aos/agrovoc#c_24098
http://www.fao.org/aos/agrovoc#c_2412
http://www.fao.org/aos/agrovoc#c_545
http://www.fao.org/aos/agrovoc#c_7778
Mathematical analysis
Moisture
SECADO
SECHAGE
TEMPERATURA DEL AIRE
Temperature
TEMPERATURE DE L'AIR
TEMPS
TIEMPO
TIME
VELOCIDAD
VELOCITY
VITESSE
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Summary:In this study, Fick's second law was used as a major equation to calculate the moisture diffusivity for apricot fruit with some simplification. Drying experiments were carried out at the air temperatures of 40, 50, 60, 70, and 80 deg C and the drying air velocity of 1, 1.5 and 2 m/s. The experimental drying curves showed only a falling drying rate period. The calculated value of the moisture diffusivity varied from 1.7 x 10*-10 to 1.15 x 10*-9 square m/s for apricot fruit, and the value of activation energy ranged from 29.35 to 33.78 kJ/mol at different air velocities.
ISSN:1212-9151
1805-9376
DOI:10.17221/8/2009-rae