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×published date:2023-Jul-13
FULL TEXT in - | page 157 - 167
Abstract
Peeling of cassava roots is unavoidable and it is the most problematic process in postharvest processing operations. The irregularity in shapes and sizes of cassava tubers has been a major constraint limiting researchers in developing an efficient peeler without accounting for an undesirable level of wastage. The purpose of this study is therefore aimed to design and fabricated a cassava peeling machine using wire cables; knitted on a hollow cylindrical shaft to abrade the peels on cassava. The machine cost N 412,420 to produce and it consists of a watering system, peeling chamber, peel collecting tray, wastewater discharge basin, chain, sprockets and 1.12 kW electric motor. The Peeler was evaluated at a constant abrasive speed of 167.4 rpm, water application rate at 0.00134 m3/s and peeling duration at 120 s. At this set condition, the highest peeling-efficiency for small, medium and large sizes of tubers were achieved; 86.90, 78.40 and 64.98 % while its corresponding flesh-loss was 3.36, 2.59 and 0.62 % respectively with no broken tubers accorded. An average of 300-350 kg/hr was estimated as the machine’s throughput capacity.
Keywords: Cassava, Peeler, Abrasive, Development,Peels
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