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Drying Kinetics of Moringa (<i>Moringa oleifera</i>) Seeds

Ademola K. Aremu 1 and A. Akintola 2
1. University of Ibadan, Department of Agricultural and Environmental Engineering, Nigeria
2. Oyo state College of Agriculture, Igboora, Oyo State, Nigeria

Abstract—Drying of Moringa oleifera seed was investigated at air temperatures of 50℃, 60℃ and 70℃. 200g of the bulk seeds were dried using a cabinet tray dryer with a fan blowing at a velocity of 3.5m/s over the heating elements into a drying chamber with perforated trays. The drying data were applied to three drying models namely Page, Lewis and Henderson and Pabis. The model performance was evaluated by comparing the coefficient of determination (R2) and the Root Mean Square Error (RMSE) of the experimental and predicted moisture ratios using non-linear regression analysis. The R2 and RMSE vary between 0.902-0.999 and 0.053 and 0.372 respectively for the three models used for prediction. Page model satisfactorily predicted the drying behaviour of moringa seed with the highest R2 and lowest RMSE value and also gave best fitting curves. The effective moisture diffusivity of moringa seed was found to be 20.1×10-9, 25.1×10-9 and 30.5×10-9m2/s at 50℃, 60℃ and 70℃ respectively and the activation energy was found to be 19.49kJ/mol. This study showed that the drying of moringa seeds can be accurately predicted using any of the thin-layer drying models used. The Page model proved to be an overall better prediction model for drying of moringa seed. These instructions give you basic guidelines for preparing cameraready papers.

Index Terms—drying kinetics, moringa seeds, cabinet tray dryer, drying models

Cite: Ademola K. Aremu and A. Akintola, "Drying Kinetics of Moringa (Moringa oleifera) SeedsSeeds," Journal of Life Sciences and Technologies, vol. 4, no. 1, pp. 7-10, June 2016. doi: 10.18178/jolst.4.1.7-10

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