Development Of A Device For De-Coating Roasted Groundnuts
Abstract
The traditional practice of de-coating roasted groundnut manually is time and energy consuming in addition to being unhygienic. The objective of this study was therefore to develop a de-coating machine for roasted groundnut seeds with the aim of eliminating the drudgery and enhancing the hygiene of the de-coating process. Two varieties of groundnut (Virginia and Valencia) and a 5x5 Latin square experimental design was used to evaluate the machine developed with batch weight (96, 144, 192, 240 and 288 g), running time (varied from 25 to 65 secs in steps of 10 secs), and operating speed (156, 180, 200, 220 and 250 rpm) as variables for the experiment. A maximum de-coating efficiency of 90.30% for Virginia and 93.01% for Valencia groundnuts at 250 rpm operating speed and 65 secs running time were observed. The highest percentage seed damage of 19.84% for Virginia and 23.26% for Valencia groundnuts was also observed at 250 rpm operating speed and 65secs running time. The result got shows that the device was found efficient for use owing to its improvement in timeliness and removal of drudgery associated with groundnut processing.
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