Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 19 ISSUE 1
Written by Tarek FOUDA, Mohamed DARWESH, Mahmoud ELKHODAREY

Potato varieties (Hermes and Lady Rosetta) harvested from different type of soil (clay and sandy) were vital factors have deep effect in peeling processes addition to potato condition (freshly harvested and stored in a refrigerator for 3 months at a temperature ranges between +7 and +10 Co and relative humidity ranges between 90% and 95%) were used. .The main objective of this research studies on the factors affecting for abrasive peeling machine performance. The measurements and indicators such as physical properties of potato, the peeling efficiency, peel losses, and emery work time were tested. The results showed that when used stored potato tubers the peeling efficiency decreased by average 16.1 % with using stored potato tubers , the peel losses of potatoes during peeling process decreased by average 16.95 % with using stored potato tubers. Fresh potato tubers showed the decreased in peel efficiency from 96.8 to 52.3 % after 2000 hours from working time, while with using stored potatoes the peel efficiency more decreased from 93 to 54.8 % after 2000 hours of working time .Also fresh potato tubers showed the decreased in peel percent from 2.0 to 0.85 % after 2000 hours from working time, while with using stored potatoes the peel losses of potatoes more decreased from1.85 to 0.77 % after 2000 hours of working time .

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