Reasons and Solutions for Freeze Dried Product Moisture Absorption

Freeze dried products processed by freeze dryer have highly porous microstructure, which makes products easy to absorb water vapor in ambient air. When discharging finished goods from food freeze dryer, if the relative humidity of workshop environment is too high, freeze-dried materials quickly absorb moisture and turn soft, losing crisp texture. The core solution is humidity control for discharging area of vacuum freeze drying equipment. Install dehumidifier to reduce air humidity in discharging room. Operators should complete sorting and sealing packaging as quickly as possible right after taking materials out of freeze dryer. The freeze drying production line with fruit and vegetable freeze dryer usually matches automatic packaging station next to the discharging port. Fast sealing packaging greatly reduces scrap risk caused by moisture absorption of freeze dried fruits and vegetables.