Osmotic dehydration of carrot in sugar beet molasses: mass transfer kinetics
2010
Koprivica, G.B., Faculty of Technology, Novi Sad (Serbia) | Mišljenović, N.M., Faculty of Technology, Novi Sad (Serbia) | Lević, Lj.B., Faculty of Technology, Novi Sad (Serbia) | Jevtić, L.R., Faculty of Technology, Novi Sad (Serbia) | Filipčev, B.V., Institute for Food Technology, Novi Sad (Serbia)
The osmotic dehydration process of carrot in sugar beet molasses solutions (40, 60 and 80%), at three temperatures (45, 55 and 65 deg C) and atmospheric pressure was studied. The main aim was to investigate the effects of immersion time, working temperature and molasses concentration on mass transfer kinetics during osmotic dehydration. The most important kinetic parameters were determined after 20, 40, 60, 90, 120, 180, 240 and 300 min of dehydration. Diffusion of water and solute was the most intensive during the first hour of the process and the maximal effect was observed during the first 3 hours of immersion. During the next two hours of dehydration, the process stagnated, which implied that the dehydration time can be limited to 3 hours.
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