Description
Dehydration removes water by sublimation, atomization, or low‑pressure heat.
Technical
Freeze‑drying (lyophilization) uses sublimation under <0.1 mbar at –40 °C to –80 °C, preserving heat‑labile nutrients. Spray‑drying atomizes liquids into 50–200 µm droplets exposed to 150–200 °C inlet temperatures, yielding powders with 5–10 % moisture. Vacuum drying operates at 40–80 °C under 0.01–0.1 atm, minimizing thermal degradation while achieving 5–15 % moisture.
Science
Primary Reaction
Sublimation, evaporation, and atomization
Sensory Profile
Aroma ()
crispdrymildneutraltoasted
Origin & History
Civilization
NASA space program
Era
1960s
Region