Author(s): Ummugulsüm Erdogan, Muzaffer Ipek, Cevat Aydin and Lütfi Pirlak
Article publication date: 2012-06-01
Vol. 30 No. 2/3 (yearly), pp. 120-124.
236
Keywords
Dry mulberries, Morus alba, Physical characteristics.
Abstract
This study was to present basic principles of physical properties of dried mulberry fruits in order to facilitate the design of some machines for its processing. Several physical properties of dry mulberries were evaluated as functions of moisture content. The average length, width, thickness, geometric mean diameter, sphericity, unit mass and volume of fruit were determined to be 17.60, 9.45, 9.40, 11.58 mm, 66.24%, 0.813 g and 1.25 cm3, respectively. In the moisture range from 3.64% to 41.36% for rewetted fruit, the bulk density increased from 431.92kgm-3to 542.98 kgm-3, the true density increased from 1073.85 kgm-3 to1271.78 kgm-3 and the projected area increased from 0.934cm2 to 1.325 cm2; however, porosity decreased from 59.77% to 57.30%. In the moisture range from 3.64% to 41.36%., the static coefficient of friction varied from 0.16 to 0.50 for dried mulberries over different material surfaces.