Why is freeze-drying preferred over simple dehydration for food preservation?
Answer
Dehydration often degrades the flavor and texture of food.
While dehydration removes water, it often does so in a way that significantly alters the texture and flavor profile of the original product. Freeze-drying is a more sophisticated method that allows for rehydration. When water is added back to a freeze-dried meal, it returns to a state that is much closer to the original fresh version. This makes the food more palatable for the crew, which is important for maintaining morale and dietary habits during long-term space flight.
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