Various famous dishes are processed through pre made freeze-drying technology and delivered to consumers for direct heating or brewing and enjoyment. freeze-dryingPrefabricated dishes have been solvedConsumers' natural preference for food、Nutritionhygiene、Convenient instant meals and other issues bring great convenience to daily life. The successful development of freeze-dried pre made dishes is attributed to the advancement of vacuum freeze-drying technology，At present, several major listed companies are taking the lead in utilizing the working principle of food vacuum freeze dryers and mature pre made vegetable freeze-drying technology to produce and supply the market with pre made vegetable freeze-drying processing.

Pre made vegetable freeze-drying technology is a stable method for drying pre made vegetables. It refers to pre freezing pre packaged food containing water at a low temperature of -45 ℃ for 180 minutes, allowing the center temperature of the food material to reach around -45 ℃ ± 3 ℃. Adjustments are made according to the different types of pre packaged food, and then a drying stage is carried out. Continuous heating is carried out under a vacuum degree of less than 50PA, with a heating control temperature range of -30~+30 ℃, a vacuum freeze-drying time of 400~500min, and a vacuum degree controlled at around 50PA. About 85~90% of the flowing water is removed in one drying stage, and then analytical drying is carried out. The drying temperature is controlled at 40~65 ℃ for 500~600min, and the vacuum degree is controlled at around 35~40PA to remove about 10% of the bound water. The pre made freeze-drying technology of FZG food freeze dryer adjusts the freeze-drying process based on the characteristics of the dishes and the thickness of the materials.

Working principle of food vacuum freeze dryerIt is a method of preserving the nutritional content of food by utilizing the principle of sublimation in a high vacuum state, where the moisture in pre frozen materials is directly removed as water vapor through ice sublimation without melting, thus achieving the purpose of freeze-drying. The food freeze-drying machine is suitable for processing and production of dishes freeze-drying, spices freeze-drying, condiments freeze-drying, Rice noodles freeze-drying, noodles freeze-drying and rice freeze-drying.