How does freeze-drying protect the nutritional integrity of food compared to canning?
Answer
It operates at low temperatures, preserving heat-sensitive nutrients.
Canning involves high-heat processes that can cause significant degradation of vitamins, minerals, and other heat-sensitive nutrients. In contrast, freeze-drying is a low-temperature process that protects the chemical integrity of the food. This efficiency ensures that the nutrients, vitamins, and minerals remain intact, which is vital for astronauts who already face the physiological stresses of microgravity, such as bone density loss and muscle atrophy, and require high-quality nutrition to maintain health.
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