Freeze drying machine is a kind of drying equipment, which is mainly composed of refrigeration system, vacuum system, heating system, and electrical instrument control system. Freeze drying machine At present, with the continuous development of freeze drying technology and freeze drying machine technology, freeze drying is being used more and more widely in the development of sterile preparations, especially in the pharmaceutical industry, playing a very important role. Then let's talk about the uses, benefits and safety precautions of freeze drying machine.
Freeze drying machines in the food industry are often used for drying fruits and vegetables, meat and poultry, aquatic products, condiments, convenience foods and famous specialties. Therefore, freeze drying machines are also called food freeze drying machines. The purpose of keeping the original color, aroma, taste, shape and freshness of food unchanged, and the rehydration is good. The finished product is easy to store and transport, the cost is reduced, and the shelf life is extended.
The medicinal materials industry uses vacuum freeze drying technology to dry nutritional health products such as royal jelly, ginseng, tortoise, turtle, earthworms, etc., which better retains the original nutritional value and makes people believe that the nutritional products are pure and natural.
The pharmaceutical industry is used for the dehydration and preservation of Chinese and Western medicines such as serum, plasma, vaccines, enzymes, antibiotics, hormones, etc.
In biological research, blood, bacteria, arteries, bones, skin, cornea, nerve tissues and various organs that are preserved for a long time using vacuum freeze drying technology can be regenerated by supplying water when used, while maintaining their biophysical properties.
Benefits of freeze dryers
1. Freeze drying is carried out at low temperatures, so it is particularly suitable for many heat-sensitive substances. For example, proteins and microorganisms will not denature or lose their biological activity. Therefore, freeze dryers are widely used in medicine.
2. Since the drying is carried out in a frozen state, the volume remains almost unchanged, and the original structure is maintained without concentration.
3. The material dried by the freeze dryer is loose and porous, and is sponge-like. After adding water, it dissolves quickly and completely, and almost immediately restores its original properties.
4. Since the freeze dryer is dried under vacuum with very little oxygen, some easily oxidized substances are protected.
5. When the freeze dryer is dried at low temperature, some volatile components in the material are lost very little, which is suitable for drying some chemical products, medicines and foods.
6. During the freeze drying process, the growth of microorganisms and the action of enzymes cannot be carried out, so the original properties can be maintained.
7. The freeze dryer can remove more than 95-99% of the water, so that the dried product can be stored for a long time without deterioration.
8. Since the water in the material exists in the form of ice crystals after pre-freezing, the inorganic salt dissolved substances originally dissolved in water are evenly distributed in the material.
9. The material dried by the freeze dryer is loose and porous, sponge-like, and dissolves quickly and completely after adding water, and almost immediately restores its original properties.
10. Since the drying is carried out under vacuum, there is very little oxygen, so some easily oxidized substances are protected during drying.
