Influence of thermal treatment on physical properties of Hippophae rhamnoides L. grown wild in Romania

摘要

Knowledge of the physical properties of the sea buckthorn (Hippophae rhamnoides L.), which is grown wild in Romania, is necessary for the design of equipment for harvesting, transporting, cleaning, packing, storing, processing, etc., of the berries. The physical properties of Hippophae rhamnoides L. have been evaluated as a function of moisture range of the berries. The size and mass increased from 3.4 mm to 4.3 mm and 27.67 g to 34.23 g, respectively, when the moisture content increased from 9% to 18.1%. The bulk density, true density and angle of repose increased, whereas the porosity decreased with the increase in the moisture content. The angle of repose increased from 21.34° to 30.11° for the same moisture increase. The plywood surface offered more frictional resistance than the galvanized iron surface.