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Characterization and the Kinetics of drying atthe Drying oven and with Microwave oven of the Nephelium lappaceum Seeds

By: C.H. Hounounou Moutombo, A. Kimbonguila, L. Matos, B.G. Elongo C.N. Loukoula, M.L.G. Mizere, J.M. Nzikou

Key Words: Kinetics of drying, drying oven, microwave oven, Coefficient of diffusion, Energy of activation, Nepheliumlappaceum.

Int. J. Biosci. 14(2), 473-481, February 2019.

DOI: http://dx.doi.org/10.12692/ijb/14.2.473-481

Certification: ijb 2019 0166 [Generate Certificate]

Abstract

The objective of this work is to contribute to valorization deNepheliumlappaceum by the characterization of kinetics of drying of seeds of Nepheliumlappaceum.  The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven.  The temperatures and the powers of drying are respectively:  50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nepheliumlappaceum do not present a phase of constant kinetics.  The coefficients of diffusion vary between 2.09.10 -8 to 2.98.  10 -8  m 2 / s in the interval of 50°C at 70°C and between 4.83×10 -07  at 9.04×10 -07  m 2 / s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ.mol -1  expressed the effect of the temperature on effective diffusivity.

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Characterization and the Kinetics of drying atthe Drying oven and with Microwave oven of the Nephelium lappaceum Seeds

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C.H. Hounounou Moutombo, A. Kimbonguila, L. Matos, B.G. Elongo C.N. Loukoula, M.L.G. Mizere, J.M. Nzikou.
Characterization and the Kinetics of drying atthe Drying oven and with Microwave oven of the Nephelium lappaceum Seeds.
Int. J. Biosci. 14(2), 473-481, February 2019.
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