Some selected properties of convectively dried apples with osmotic pre-treatment under varying pressure conditions
2009
Janowicz, M. | Sredzinska, K,Szkola Glowna Gospodarstwa Wiejskiego, Warszawa (Poland). Katedra Inzynierii Zywnosci i Organizacji Produkcji
In this paper, it was attempted to determine the effect of the kind of osmotic substance and pressure as applied during the pre-treatment on changes in the tissue of osmotically dehydrated and convectively dried apples. It was found that the efficiency of the dehydration process and the character of changes depended on the pressure and kind of osmotic substance applied. It was found that, after the completed convectional drying of apples dehydrated under a lower pressure, that the final water content in those apples was lower regardless of the kind of osmotic substance. At the same time, those apples are characterized by higher water activity levels compared to the apples dehydrated under the atmospheric pressure conditions
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