Household Raspberry Freeze Drying Machine

Brief description: Household Raspberry Freeze Drying Machine: Advantages of Freeze Dried Raspberry Raspberry Raspberry is known as the "golden fruit" in the world. In addition to being rich in fructose, vitamins, amino acids, and having a mellow and sweet and sour flavor, it also has medicinal functions. However, raspberry is not resistant to storage, so fresh consumption is only a small part of its sales, and the price is only about 20 yuan per kilogram. Raspberry that has been freeze-dried by low-temperature vacuum not only has storage resistance, no loss of nutrients, and good taste, but its market price has also increased several times, around 100 yuan per kilogram. Freeze dried fruit is different from frozen fruit. Freeze dried fruit can not only be used as raw materials for fruit juice and jam, but can also be directly consumed, or soaked in water or wine

　　

Raspberry is known as the "golden fruit" in the world. In addition to being rich in fructose, vitamins, and amino acids, it has a rich flavor, sweet and sour taste, and medicinal functions. However, raspberry is not resistant to storage, so fresh consumption is only a small part of its sales, and the price is only about 20 yuan per kilogram. Raspberry that has undergone low-temperature vacuum freeze-drying is not only resistant to storage, does not lose nutrients, and has a good taste, but its market price has also increased several times, around 100 yuan per kilogram. Freeze dried fruit is different from frozen fruit. Freeze dried fruit can not only be used as a raw material for fruit juice and jam, but can also be directly consumed, or soaked in water or wine, and is very popular in the market.

　　

Why choose vacuum freeze-drying?

　　

Traditional drying can cause material shrinkage and damage cells, but the structure of the sample will not be destroyed during freeze-drying because the solid components are supported by the solid ice in their positions. When ice sublimates, it leaves pores in the remaining dry material. This preserves the integrity of the biological and chemical structure and activity of the product.

　　

Drying is one of the methods to prevent substances from deteriorating. There are many drying methods, such as sun drying, boiling drying, drying, spray drying and vacuum drying. But these drying methods are all carried out at temperatures above 0 ℃ or higher. The products obtained from drying generally have a reduced volume and a harder texture. Some substances have undergone oxidation, and most of the volatile components have been lost. Some heat sensitive substances, such as proteins and vitamins, may undergo denaturation. Microorganisms will lose their biological vitality, and dried substances are not easily soluble in water. Therefore, the dried product has significant differences in appearance compared to before drying.

　　

The freeze-drying method is different from the above drying methods. The product drying is basically carried out below 0 ℃, which means that the moisture containing substances are pre cooled and frozen into solids, and then the water vapor is directly sublimated under vacuum conditions, like dry ice, without going through the liquid state. The entire drying process is carried out at a lower temperature.