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What Process Optimizes Convective Drying of Farm Products with Complex Constitution: Case of Okra (Abelmoschus esculentus)

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DOI: 10.4236/jacen.2019.81002    266 Downloads   433 Views

ABSTRACT

In this paper, we propose an optimized process for farm product convective drying. Above and beyond the influence of the air parameters on foodstuff convective drying, this work shows that product internal parameters and drying proceedings must be taken into account during the evaluation of their convective drying. Results indicate that okra maturity influences its convective drying. It dries faster when it is too young or when it is advanced age. Drying time of okra of 1, 2, 3, 4 and 5 days old is respectively 580 min, 780 min, 990 min, 1200 min and 850 min. Also, one observes that considering okra on its three zones according it length, i.e. its base, middle and extremity parts have not the same resistance to transfers during convective drying. These three zones have respectively 400 min, 520 min and 600 min of drying time. Okra cut reveals a major importance on its convective drying evaluation. The longitudinal cut di-viding okra on four parts, sliced with 5 mm and 10 mm of thickness and the whole okra put respectively 150 min, 200 min, 280 min and 400 min for their drying. At last, three (03) different constituents of okra, namely, the skin, the seeds and central material behave differently during convective drying. The drying time of the central material, the seeds and the skin is about 70 min, 150 min and 190 min respectively, against 400 min for the whole okra.

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Honoré, O. , Hélène, D. and François, Z. (2019) What Process Optimizes Convective Drying of Farm Products with Complex Constitution: Case of Okra (Abelmoschus esculentus). Journal of Agricultural Chemistry and Environment, 8, 14-22. doi: 10.4236/jacen.2019.81002.

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