82 search results found for "freeze dryer": 64 products, 18 news.
Use Of Food Freeze Dryer
Food Freeze Dryer is currently a more advanced method of material dehydration, the technology is water-containing substances frozen at low temperatures, and then make the water in the vacuum state directly sublimation, and condensation method to capture the sublimation of water vapour, to achieve the purpose of material dehydration and drying. After the food freeze dryer of the material, its physical, chemical and biological state is basically unchanged, the material in the volatile components and heat denaturation of the loss of nutrients is very small, after freeze drying of the material is porous, its volume is basically the same as before drying. Therefore, after adding water, due to the large contact area, it can be recovered very quickly and has a longer preservation period in the sealed container.
2023-09-18 09:19:22
Differences Between Freeze Dryer And Spray Dryer
Dryer refers to a mechanical device that uses heat energy to reduce the moisture content of materials. It is used to dry objects. Usually, there are adsorption dryers, spray dryers, and freeze dryers. As common drying equipment, freeze dryers and spray dryers have many differences, but few people know the following three differences.
2023-03-29 14:39:11
Advantages Of In-situ Freeze Dryers
The in-situ freeze dryer adopts the separate design of the drying chamber and the cold trap, and uses silicone oil as the heat transfer medium, which not only saves energy, but also has a fast production speed (equipped with electric defrosting) and is easy to clean.
2022-08-26 16:25:13
How To Control The Pressure Of The Pilot Freeze Dryer?
Pilot freeze dryer is common in daily life. Air freeze-drying technology, referred to as freeze-drying, is also known as sublimation air-drying. Freeze-drying is a specific method of pre-freezing water-containing materials and then subliming them in a vacuum state to obtain air-dried objects. Freeze-dried objects have basically unchanged original biological and chemical properties, and are easy to store for a long time. After soaking in water, it can be restored to the form before freeze-drying, and its original biochemical properties can be maintained. Therefore, freeze-drying technology is widely used in various fields such as industrial chemistry and medical equipment.
2022-02-17 08:44:48
Features Of Food Freeze Dryer Lyophilizer
Freeze Dryer is widely used in medicine, pharmacy, biology research, chemical industry and food production, etc. After the freeze drying process, a long term preservation is much easier. They can be restored to the original state and maintain their chemical and biological characteristics after freeze dried.
2022-01-04 09:10:14
Application of Freeze Dryer in Cosmetics
With the continuous improvement of our living standards and quality, people have higher and higher expectations for the quality and effects of cosmetics in recent years. Because we can use a vacuum freeze dryer to obtain biological preparations at ultra-low temperature, which will promote the development of cosmetics towards a purely natural and functional orientation. In addition, a vacuum freeze dryer is used to produce cosmetics, which can preserve the activity, ingredients and quality of biological agents.
2021-11-24 17:18:11
Advantages of freeze drying technology for laboratory freeze dryers
Drying methods are various, such as drying, boiling, drying, spray drying, and vacuum drying, but ordinary drying methods are usually carried out at temperatures above 0 ° C or higher. The products obtained by drying generally have problems of shrinking size and hardening of the texture. Most of the volatile components are lost, some heat-sensitive substances are denatured and deactivated, and some substances are even oxidized. Therefore, the dried product has a large difference in properties compared with that before drying. The freeze drying technology of the laboratory freeze dryer has the following advantages over the advantages of ordinary drying technology:
2019-04-16 10:09:52
What about the refrigerant leak in the laboratory freeze dryer?
Refrigerant, also known as refrigerant, is commonly known as snow in some areas of the South. It is a working substance that continuously circulates in a refrigeration system and undergoes its own state change to achieve refrigeration. The refrigerant absorbs heat in the evaporator by heat of a cooling medium (water or air, etc.), and transfers heat to the surrounding air or water in the condenser to condense.
2019-04-15 11:06:08
How to choose a suitable freeze dryer?
The principle of a freeze dryer is a technical method of preliminarily freezing an aqueous article and then sublimating its water under vacuum to obtain a dried article. The freeze-dried articles are easy to store for a long time, and can be restored to the state before lyophilization and retain the original biochemical characteristics after adding water.
2019-03-29 15:48:32
What should I pay attention to when purchasing a freeze dryer?
The main uses of modern freeze-drying technology are: freeze-drying storage of in vitro biological tissues; freeze-drying preservation of live bacteria; lyophilization of Chinese herbal medicines, western medicines, biological drugs and blood products; freezing of convenience foods, health foods, functional foods Dry storage and transportation; lyophilization preparation of nano ceramic materials and various metal micropowder materials. Therefore, freeze-drying technology has been widely used in the fields of chemicals, food, materials, medicine, and biological products. Vacuum freeze dryer (referred to as freeze dryer) is a device for realizing freeze-drying technology. It is a complex structure machine involving refrigeration, vacuum, thermal, mechanical, fluid, electrical control and pressure vessels.
2019-02-25 11:52:18
Freeze dryer use precautions
The freeze dryer is mainly a machine consisting of a refrigeration system combined with a vacuum system and a heating system including an electrical control system. Since it is freeze-dried, there will definitely be a dry box and a refrigeration unit. There are of course some other components. In fact, there are many ways to dry, such as drying, drying or vacuum drying.
2017-07-08 16:25:15
Advantages of small food freeze dryers
Vacuum freeze-drying technology is a high-tech dehydration technology that protects color, keeps freshness and maintains quality. In recent years, the consumption of freeze-dried food in Europe, America and Japan has increased rapidly, and for a long time, China's agricultural and livestock products have been exporting. The raw material or primary processing stage gives a general feeling of low technical content. By developing freeze-dried vegetables and meat, it will improve the grade of China's export food and obtain higher added value.
2016-05-02 10:45:45
What are the benefits of a freeze dryer?
The design of the freeze-drying machine automatic control system requires simple operation, starting from the material into the button, quick-freezing vacuum sublimation and drying in one go, prompting the shutdown after the freeze-drying is completed. Relevant temperature and pressure control points should be carefully selected and properly controlled. The correlation between quick freezing, vacuum holding and heating should be properly controlled, and the process curve should be set for different materials.
2016-04-23 17:52:51
What is the role of the pre-cooler of the freeze dryer?
In the freeze dryer, the pre-cooler is not only the refrigeration recovery device of the refrigeration system, but also the low-temperature air regenerator after dehydration. It is a major component of the freeze dryer and is a characteristic condition that distinguishes the freeze dryer from other refrigeration equipment.
2015-12-24 17:54:21
Freeze dryer parts and usage analysis
The freeze dryer consists of a refrigeration system, a vacuum system, a heating system, and an electrical instrument control system. The main components are drying ovens, condensers, refrigeration units, vacuum pumps, heating/cooling devices, etc. It works by freezing the dried item below the triple point temperature and then sublimating the solid water (ice) in the item to water vapor under vacuum conditions, removing it from the item and drying the item.
2015-07-05 09:47:42
What are the preparations for the freeze dryer before work？
It is well known that when using the freeze dryer for the first time, we must thoroughly clean all parts of the dryer. Everyone knows that stainless steel parts are cleaned with ethanol, and plexiglass is washed with normal saline. Ampoules are cleaned with an ultrasonic cleaner, but what preparations do we need to make before actually operating the freeze dryer?
2015-06-08 08:54:05
Which foods can be lyophilized with a freeze dryer？
The freeze-dried food of the freeze dryer machine has gradually entered our daily life because of its good preservation, good nutrition, easy to carry and easy storage. So, which foods can be lyophilized?
2015-04-11 08:33:47
Freeze-drying operation precautions for vacuum freeze dryer
Freeze drying of a vacuum freeze dryer refers to the process of removing moisture or other solvent from a frozen biological product by sublimation. Sublimation refers to the process of solvents, such as water, like dry ice, which does not pass through a liquid state and changes from a solid to a gaseous state.
2015-02-15 08:22:00
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