Vol. 11, Issue 12 (2022)

Deskinning of the field bean is one of the major problems which cause hindrance in commercial utilization. Presently it is done by hand which is unhygienic, tedious and time-consuming process. This causes hindrance among the consumer to purchase. The study was undertaken to develop and evaluate the performance of the field bean de-skinner. The field bean de-skinner was developed in both horizontal and rotary driving types using nylon, cloth and steel materials. The horizontal field bean de-skinner was evaluated by using both Nylon roller and cloth roller, likewise rotary type was evaluated by using both nylon and steel plates by maintaining an operating speed of 20-25 rpm and clearance between rollers/plates of about 5.4 -5.6 mm. The selected field beans were soaked for a period of 1, 2, 3 and 4 h and evaluated developed de skinner by measuring different efficiencies. De-skinning efficiency was found increasing trend with an increase in soaking time, whereas breaking efficiency and un-deskinning efficiency were found decreasing with an increase in soaking time. The rotary type field bean de skinner found higher de skinning efficiency and lower breaking and under-skinning efficiency (81, 5 and 10 per cent respectively) compared to horizontal type field bean de-skinner (72, 12 and 20 per cent respectively). The rotary type field de-skinner was found highly efficient with minimum breaking and under skinning efficiency compared to the horizontal type.