Shanghai Jingyi Tech Co., Ltd. – a professional freeze dryer manufacturer offering reliable solutions from lab to industrial scale.

When we purchase food and medicine, we always hope to ensure their freshness and quality. However, because food and medicine contain a large amount of moisture, they are susceptible to microbial growth and oxidation, leading to loss of freshness. To solve this problem, the Freeze Dryer was developed. This equipment uses low temperature and a vacuum environment to freeze and then evaporate the moisture in food and medicine, thereby preserving their original quality and nutritional content. It provides reliable technical support for food and medicine preservation.

Principles and Working Process

The core principle of a freeze dryer is freezing and drying. The food or medicine is placed into a freezing chamber, where the temperature is lowered to rapidly freeze the moisture into ice. Then, in a vacuum environment, through heating and pressure reduction, the ice is directly converted from a solid state into a gas, bypassing the liquid phase – a process called sublimation. This allows the moisture in the food or medicine to transition directly from solid to gas without becoming liquid. This sublimation process is known as freeze drying. Through the processes of freezing and sublimation, the moisture in the food or medicine is removed, preserving its original quality and nutritional content.

Advantages and Applications

This equipment has many advantages that make it widely used in the food and pharmaceutical industries. First, the low temperature and vacuum environment during freeze drying effectively kill microorganisms, extending the shelf life of food and medicine. Second, the sublimation of moisture during freeze drying allows the nutritional content of food and medicine to be retained while avoiding the negative effects of moisture on product quality. Furthermore, the freeze-drying process does not require the addition of any chemical additives and has no impact on the original characteristics of the product. Therefore, this equipment is widely used in the preparation, storage, and transportation of food and medicine.

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