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The present study examines the effect of air velocity on drying kinetics of the drumstick leaves in a forced convective dryer. The drumstick leaves were dried in the temperature range of 50–800 C, at different air velocity (Dv) of 0.5 and 1.3 m/s. The results indicated that drying temperature and air velocity are the factors in controlling the drying rate. Experimental data obtained for the samples for color, drying rate and drying time proved that air velocity of 1.3 m/s yielded the product superior in terms of both quality and energy efficiency as compared to the samples at 0.5 m/s. Activation energy for drumstick leaves dried with air velocity, 0.5 and 1.3 m/s was 12.50 and 32.74 kJ/mol respectively. The activation energy relates similarly with the effective moisture diffusivity which also increased with increase in air velocity and temperature.

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In the present work the effect of storage conditions of egg on rheological properties of Liquid Whole Egg (LWE) prepared from stored eggs were evaluated using a Brookfield. Newtonian model and Ostwald-of-Waele (Power Law) model were fitted to the rheological data obtained by experiments, both represented a good adjustment to the rheological data. The Newtonian model has shown an R 2 value between 0.984 and 0.993 (P<0.05) and 0.991 and 0.995 (P<0.05) for LWE samples prepared from eggs stored at room temperatures and refrigerated temperatures. The Ostwald-of-Waele (Power Law) resulted in the best adjustment, presenting an average R 2 values higher than 0.99 in all the cases and further statistical analysis showed that power law model was appropriate to explain the correct rheological behaviour of LWE prepared from stored eggs. All the LWE samples showed pseudoplastic and thixiotropic behaviour in the experimental conditions.