Investigation of Some Physical Properties of Two Varieties of Sweet Potato (Ipomoea batatas (L.) Lam)

Authors : Olufemi ADETOLA, Oluwatusin ADENİYİ, Deji AKİNDAHUNSİ

Pages : 230-238

View : 18 | Download : 8

Publication Date : 2021-06-30

Article Type : Research Paper

Abstract :Physical properties of agricultural materials are essential in the development of machineries, equipment and devices. In this research, forty sample each of two unique varieties namely Jewel-orange flesh sweet potatoes insert ignore into journalissuearticles values(JOFSP); and Oriental-purple flesh sweet potatoes insert ignore into journalissuearticles values(OPFSP); physical properties were determined using standard methods and equations. The results show that JOFSP gave the mean length insert ignore into journalissuearticles values(110.68±24.59 mm);, widthinsert ignore into journalissuearticles values(61.40±8.09 mm);, geometric mean insert ignore into journalissuearticles values(39.72±8.19 mm);, volume insert ignore into journalissuearticles values(187.78±73.85 ml);, surface area insert ignore into journalissuearticles values(4950.00±203.32 mm2); and roundness insert ignore into journalissuearticles values(1.81±0.50); which were of higher values compared to that of OPFSP which gave the length insert ignore into journalissuearticles values(68.46±10.16 mm);, width insert ignore into journalissuearticles values(59.32±5.82 mm);, geometric mean insert ignore into journalissuearticles values(36.32±3.90 mm);, volume insert ignore into journalissuearticles values(137.83±10.97 ml);, surface area insert ignore into journalissuearticles values(4320.20±98.00 mm2); and roundness insert ignore into journalissuearticles values(1.41±0.30); respectively. JOFSP gave moisture content, thickness, mass, sphericity and true density of 58.00±10.17 %, 37.60±7.17 mm, 202.87±65.12 g, 0.35±0.08, and 1.17±0.27 g cm-3 which were of lower values compared to that of OPFSP which gave 79.32±3.84 %, 45.94±9.04 mm, 271.87±15.72 g, 0.53±0.08, and 1.89±0.14 g cm-3 for OPFSP respectively. The mean of the angle of repose and the static coefficient of friction considered for the three-separate surfaces namely plywood insert ignore into journalissuearticles values(9.35±2.87°, 0.17±0.05);, stainless steel insert ignore into journalissuearticles values(8.50±3.50°,0.15±0.05); and galvanized steel insert ignore into journalissuearticles values(8.30±3.20°); of lower values for JOFSP compared to that of plywood which gave insert ignore into journalissuearticles values(11.80±2.25°, 0.21±0.04);, stainless steel insert ignore into journalissuearticles values(9.90±2.02°, 0.19±0.05);, galvanized steel insert ignore into journalissuearticles values(10.90±2.28°); for OPFSP while the coefficient static of friction of stainless steel for JOFSP gave a higher value of 0.20±0.13 compared to that of 0.17±0.04 for OPFSP respectively. These findings provide engineers with valuable information for designing different handling, grading, and drying systems for industrial processing.
Keywords : Investigation, Parameters, Physical properties, Sweet potato, Varieties