Physical properties of ackee apple ( Blighia sapida) seeds

• Published in: Journal of food engineering Vol. 45; no. 1; pp. 43 - 48
• Main Authors: Omobuwajo, T.O, Sanni, L.A, Olajide, J.O
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.07.2000; Elsevier
• Subjects: Ackee apple seeds; Agronomy. Soil science and plant productions; Angle of repose; Biological and medical sciences; Coefficient of static friction; Economic plant physiology; Food industries; Fruit and vegetable industries; Fundamental and applied biological sciences. Psychology; Morphology. Anatomy. Histology. Cytology; Size and shape indices; Specific heat capacity; Suspension air velocity; Africa; Coefficient of static friction; Size and shape indices; Suspension air velocity; Angle of repose; Ackee apple seeds; Specific heat capacity; Design; Shape; Seeds; Handling equipment; Size; Water content; Tropical crop; Multipurpose tree; Density; Physical properties
• ISSN: 0260-8774; 1873-5770
• DOI: 10.1016/S0260-8774(00)00040-6

Physical properties often required for the designing of hopper, dehuller and sundry grain processing machineries were determined for ackee apple seeds at a moisture content of 9.88% (wet basis). The average seed length, width and thickness were 24.30, 19.70 and 12.90 mm, respectively, while sphericity, roundness and aspect ratio were 75.50%, 74.44% and 81.15%, respectively. True density, bulk density and porosity were 888.73 kg m −3, 556.91 kg m −3 and 37.07%, respectively. On three different surfaces, static coefficient of friction varied from 0.38 to 0.46, while the angle of repose was essentially 25°. The suspension air velocity for the seed, kernel and hull were 9.95, 9.78 and 5.45 m s −1, respectively. The specific heat of the seed at 80°C was 2.83 kJ kg −1 K −1.