Vacuum freeze dryer

Equipment characteristics

Vacuum freeze dryer is a type of equipment that removes moisture from materials through vacuum freeze-drying technology, which is widely used in biomedicine, food processing, and materials research

Core features:
The sample is dehydrated and preserved through low-temperature freezing and sublimation drying in a vacuum environment, and is mainly used for the preparation of high-concentration carrier systems or solid preparations

Technical principle
The material is pre-frozen below the freezing point, and the solid water is directly sublimated into water vapor by heating in a vacuum environment, and the original properties and biological activities of the material are retained

Applications:
00001. Biomedicine: Used for drying and preservation of pharmaceutical preparations, lyophilization of bioactive substances (such as cells, enzymes).

00002. Food Processing: Processing foods such as coffee, tea, and fruits to extend shelf life and preserve nutrients

00003. Materials Research: Preparation of stable solid-state samples for structural analysis or chemical composition testing

Equipment features:
· After freeze-drying, the material has a spongy porous structure and good rehydration

· Low-temperature treatment avoids material deformation or ingredient loss, and is suitable for the preservation of fragile and active substances

· Intelligent control technology improves drying efficiency and meets the needs of the laboratory to the pilot stage.

Freeze dryer (also known as freeze dryer) is a special equipment that uses the principle of sublimation to pre-freeze aqueous substances in a low-temperature vacuum environment, and then sublimate the water in it directly from solid state to gaseous state, so as to obtain dry and stable products. It has advantages in preserving substance activity, form, color and flavor.

1. The freeze dryer is usually composed of the following main components
　1. Freezing part: This is one of the most important components in a freeze dryer. It includes a cryochamber and refrigeration system. A freezer chamber is usually a sealed container that can hold the material to be lyophilized. Refrigeration systems freeze substances by providing a low-temperature environment.
　2. Sublimation part: After the freezing process is completed, the substances in the freezing chamber will enter the sublimation part. This section includes a heating source, usually an electric heating element or heat exchanger, which is used to provide enough energy to sublimate solid moisture directly into a gaseous state without going through a liquid state.
　3. Vacuum system: The freeze-drying process needs to be carried out in a vacuum environment to better promote the sublimation of moisture. Vacuum systems create a low-pressure environment by removing air and maintaining the right pressure.

2. Principles and advantages

The working principle of a freeze dryer is based on freeze-drying technology, which is a process in which the moisture in the material is frozen into ice at low temperatures, and then the ice is directly sublimated into water vapor through heating in a vacuum environment. Compared with traditional drying methods, lyophilization technology has significant advantages. First of all, the material is always in a low temperature state during the freeze-drying process, so the original properties of the material, such as color, taste, nutritional content, etc., can be retained to the greatest extent. This is crucial for industries such as food and pharmaceuticals, where preserving the original properties of materials is key to ensuring product quality. Secondly, during the freeze-drying process, the water is directly converted into a gaseous state in a solid state, avoiding the problems such as dissolution and diffusion that liquid water may bring about during the drying process, thus maintaining the original structure and form of the material. This gives lyophilization technology an advantage when dealing with fragile and easily deformed materials. In addition, lyophilization technology also has advantages such as extended storage time, easy portability and transportation, and sterile environment. The freeze-dried material has a very low moisture content and can be stored for a long time without refrigeration; At the same time, the volume of the freeze-dried material is greatly reduced, and the weight is light, making it easy to carry and transport. More importantly, the freeze-drying process is carried out in a vacuum environment, which can effectively prevent the growth and reproduction of microorganisms and ensure the safety of the product.
Scope of application:

Vacuum freeze dryer

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