Water activity of osmotically dehydrated and CaCl2 infused purple sweet potatoes are shown in Figure 2. Aw was decreased in the samples during storage under both temperature (4C & RT). Aw of purple sweet potatoes that were undergone for osmotic process at room temperature storage was. ranged lowest (0.9343) and storage at 4C was ranged lowest (0.9400). Aw of osmotically dehydrated purple sweet potatoes during storage was significantly differed under different temperature storage. the samples storage at room temperature was losing Aw more quickly when compared with 4C. the. add salt, sugar molecules that are bound to catch the water, making it independent of the water Activity dropped.
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