![]() Mudgal ( 2005) reported that the compressed air based principle and abrasion based gadgets developed earlier for garlic peeling were found infeasible as thin skin/peel removed from cloves gets adhered to the abrasive surface and thus renders it quite inefficient within short span. The results revealed that the garlic peeler demonstrated with peeling efficiency (79.56 %), capacity (11.66 kg/h) and cost of peeling (INR 1.43/kg). A manually operated garlic peeler having cylinder and concave principle was developed by Indian Institute of Horticultural Research, Bangalore (India). However, hardly any work has been reported on the garlic peelers and mechanical peeling of garlic in scientific referred journals, especially on technical aspects of design and development of garlic peeler. Some information on garlic peelers which are being used by small scale industries and traders of garlic products is available in the internet domain. Typical size of the cloves makes the peeling to be very tedious and time consuming operation (Mudgal 2005). Garlic cloves contain thin outer skins (inedible) for protecting the body of each clove (segment), but before it is used as food, the outer skins must be removed. It has been cultivated for centuries all over the world on account of its culinary and medicinal properties (Sharma and Prasad 2001). Garlic is valued for its flavor and commands an extensive commercial importance because of its wide medicinal value and application in food and pharmaceutical preparations. ![]() Garlic ( Allium sativum L.), a spice of human life, is one of the important perennial bulb crops of the lily family (Liliaceae). The developed garlic peeler saved INR 16.11/kg (94.99 %) and 1.63 (97 %) man hours in comparison to the hand peeling of garlic. Operation cost of the peeler was determined on the basis of fixed and variable cost and found to be INR 22.9/h. The peeling efficiency, yield of peeled garlic and unpeeled garlic, damage and peel separation were 86.6, 86.2, 4.7, 9.15 and 96 %, respectively with a machine throughput capacity of 27 kg/h and the energy requirement of 1.15 kw-h. ![]() Prototype garlic peeler was evaluated with the optimized crop-machine parameters. ![]() ![]() Crop-machine parameters were optimized based peeling efficiency and they found to be cylinder speed of 36 rpm, cylinder-concave clearance of 10 mm, mild steel square (8 × 8 screen). An experimental garlic peeler having cylinder covered with 10 mm thick rubber was fabricated and evaluated for its performance with crop-machine parameters viz., cylinder speed (29, 36 and 42 rpm), cylinder-concave clearance (8, 10 and 12 mm), moisture content (23.1, 27.7, 33.4 and 40.5 % wet basis) and concave mechanisms. The average length, width, thickness, geometric mean diameter, sphericity, weight of garlic segment and weight of 1,000 garlic segment were measured as 26.3 mm, 10.4 mm, 8.7 mm, 13.3 mm, 0.5, 1.8 g and 1,813 g, respectively. Physical properties of garlic relevant for peeler development were identified and measured. A power operated garlic peeler having a cylinder-concave mechanism was developed with an intention to reduce cost and time. Garlic peeling is a tedious, key, costly and time consuming unit operation in garlic processing. ![]()
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