Application of Vacuum Freeze Drying Technology in Solid Beverage(一)
The vacuum freeze-drying technique is a drying technique in which a wet material or a solution is frozen to a solid state at a lower temperature, and then the water therein is directly sublimed into a gaseous state without a liquid state, and finally the material is dehydrated.
At present, vacuum freeze-drying is widely used in the food industry, such as dry coffee, juice, seafood, mushroom slices, ginseng and the like. In recent years, vacuum freeze-drying technology has become one of the main drying methods for preparing solid beverages. It has the advantage of maintaining good physical properties and nutrients, and is one of the main ways to produce high quality fruit and vegetable flour.
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