Freeze-dried powder - Names and Identifiers
Freeze-dried powder - Introduction
A Freeze-dried powder is a powdered substance prepared by freezing and vacuum drying methods. Its properties mainly depend on the nature of the original material, common raw materials include food, drugs and biological products.
Freeze-dried powder has the following features:
1. Keep the original chemical composition and structure of the substance, and have a long shelf life;
2. As the water is removed, the weight and volume are greatly reduced, which is convenient for storage and transportation;
3. Good solubility and rehydration, just add water to restore the form and function of the original material.
Freeze-dried powder is widely used in different fields:
1. Food industry: used to maintain the original flavor, nutrition and texture of food, such as coffee, dairy products and fruits;
2. Pharmaceutical industry: used to prepare drugs, vaccines and diagnostic reagents to increase their stability and storage life;
3. Scientific Research Field: used for the preparation of biological products, enzymes and antibodies, etc., to facilitate storage and maintain activity.
The method of preparing a Freeze-dried powder is generally divided into the following steps:
1. Freezing: Put the material in a low temperature environment to freeze the moisture into ice.
2. Main drying: In a low temperature and low pressure environment, the ice is directly converted into water vapor by heating up, thereby removing the moisture in the material.
3. Auxiliary drying: On the basis of the main drying, the residual moisture in the material is further removed by increasing the temperature and reducing the pressure.
For the safety information when preparing Freeze-dried powder, the following matters need to be paid attention:
1. In the freezing process, ensure the use of safe and reliable refrigeration equipment to prevent the influence of external temperature on the material.
2. In the drying process, it should be operated carefully to avoid dust or aerosols and prevent harm to the human body and the environment.
3. Strictly abide by the relevant biosafety specifications and laboratory operating procedures to ensure the safety of personnel and the quality of materials.
Last Update：2024-04-09 21:04:16