Flender/Flender Gear Units/Helical gear Reduction Box H2
ated (. Combina- tions of the following factors were studied: () two lentil sizes, one lot 4.0.5 mm andanother lot

4.5.0 mm; () soaking in water for 1, 5, 1, or 3 min; () drying the seed at 1or 3C

for durations of 0, 3, 6, and 1 min; () tempering the material for 0 or for 2 . The

dehulling efciency was calculated as the sum of percentages () of splitdehulled seed and () whole dehulled and hulled seeds.

Hulled seeds were included as those seeds not considered as loss by industry. The overall dehulling efciency was 8.1%, consisting of 6.7% dehulled split, 1.1% hulled whole seed, and 3.2% dehulled whole. Dehulling efciencies were best for the following conditions (not inclusive): smaller-sized seed, shortest drying time, least immersion time, and longer tempering time.The drying temperature did not affect dehulling efciency. The increased seed moisturecontent (longer immersion) had negative correlation with the dehulling efciency. Therewas signicant increase in the split hulled seeds and slight increase in the number of hulled whole seed with increased moisture content. 3.2.1 Pitting Whole pulses are passed through abrasive roller machine for scratching the seed coat to facilitate the entry of oil and water in the grain during premilling treatment. Some seeds(2%) are dehusked during pitting. 3.2.2 Oil and Water Treatment Edible oil treatment is used to loosen the husk of difcult-to-mill pulses. The quantity of oil used varies from mill to mill. The quantity of oil required is estimated to be 3g/kg.Water treatment, which varies with crop, is used to expand seeds, which helps in looseningthe husk by contraction of cotyledons during drying. Some dal millers apply water and oil simultaneously. This is done to reduce the process time. Addition of large quantities of water during processing and nonremoval of the entire quantity during drying adds about 3% to the weight of the product and reduces thestorage life of dal. Large variations in quantity of water added lead