PL
Badano wpływ odmiany, temperatury, prędkości przepływu powietrza i sposobu blanszowania na wybrane cechy jakościowe suszu z cebuli oraz na kinetykę procesu suszenia. W aspekcie wybranych funkcji celu wskazano optymalne technologie uzyskiwania suszu z cebuli.
EN
The effect of variety, drying temperature and air flow velocity on qualitative features of onion dry materials, as well as on drying kinetics was examined. Six varieties of onion were selected for the study. They were blanched in different time in water, NaCl solution, microwave and water vapour. The material was dried at 7 temperature levels and 5 air flow velocities. As the aim function, in the selection of optimal drying technology of onion was considered, above all, total evaluation of all examined qualitative features of dry material and the only limiting factor was drying time (t<200 min.). In this respect, the optimal choice was the Wolska variety, blanched in water for 2 min., dried at 60 °C, at air flow velocity of 0.3 m/s. If the aim function is obtaining the dry material of the best sensory features (when t<280 min.), the optimal variety is cv. Oporto, blanched for 2 min. in 5% NaCl solution and dried as above. If the aim function is the shortest time of drying, the optimal is the Rawska variety, blanched with microwave, dried at 70 °C, at air flow velocity of 0.5 m/s.