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Not AvailableBlack pepper corn at three moisture contents (5.5%, 11.4% & 17.6%, db) was subjected to size reduction using micro pulverizer with screen aperture size (0.5 mm, 1.0 mm & 1.5 mm) and feed rate (8, 16 & 24 kg h-1) at constant rotor speed (3000 rpm). It was found that the specific energy consumptions showed a decreasing trend (310.71-30.55 kJ kg-1) with increase of feed rate but increasing trend with moisture content and screen openings. Maximum specific energy consumption was recorded for 11.4% moisture content and 8 kg h-1 feed rate with 1.0 mm screen aperture size. The average particle size increased from 0.21 mm to 0.29 mm with increase of moisture content and screen opening. The Bond's work index (0.086-0.312 kWh kg-1) and Kick's constant (0.68 to 20.33 kWh kg-1) showed direct motion with moisture content feed rate and screen aperture size. Size reduction ratio and grinding effectiveness of …Not Availabl

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The physical and mechanical properties of black pepper were determined as a function of moisture content in the range of 3.3% to 18.1%(db). The average axial dimensions, major, medium and minor increased linearly from 4.92 mm to 5.37 mm, 4.59 mm to 5.08 mm and 4.42 mm to 4.89 mm, respectively. The geometric mean diameter, sphericity, unit volume, surface area and thousand seed weight increased from 4.63 mm to 5.10 mm, 0.94 mm3 to 0.95 mm3, 53.06 mm3 to 70.35 mm3, 67.65 mm2 to 81.87 mm2 and 42.82 g to 56.04 g, respectively with increase in moisture content from 3.3% to 18.1%. The true density increased linearly from 987.7 to 1012.2 kgm-3, while the bulk density decreased linearly from 556.8 to 542.7 kgm-3 and the porosity increased linearly with increase in moisture content. The angle of repose increased linearly from 22.30 to 33.66 and the coefficient of friction increased linearly from 0.705 …Not Availabl