Freeze-drying technology is widely used. As early as the beginning of this century, scientists used lyophilized methods to preserve biological specimens and strains in the laboratory. Later, some industrial pharmaceutical plants used freeze-drying methods to produce antibiotics and vaccines. Serum and various biological drugs. By the 1960s, developed countries such as Europe and the United States, Japan began to use lyophilization methods to produce foods, and the main varieties were: mushrooms, Garlic, vegetables, beef, seafood, coffee and so on. In the 1980s, the production of freeze-dried products was almost all-inclusive, such as various beverages, spices, fast foods, snack foods, health foods, aquatic products, meat and eggs, edible fungi, enzyme preparations, algae, etc., and the scale and output also continued to expand. In China, freeze-drying technology has long been applied in the pharmaceutical industry. Biological drugs such as antibiotics and vaccines are produced by freeze-drying methods. In the mid-1980s, the Northeast began to use lyophilization methods to produce ginseng, velvet, forest products, etc., and later gradually expanded to food production, but the scale and application range is still very small. From an empirical point of view, freeze-dried foods should be selected for those species that have the characteristics of local resources and can highlight the lyophilization characteristics. Such as biological products: including enzyme products, fungi, algae, vitamins, etc. contain a lot of heat-sensitive ingredients, can only be produced by the freeze-dried method; some famous rare animals, native products, aquatic products, flowers and fruits, etc. Maintain the original features, the same color appearance, that is, there is ornamental value and food value, the effect of the freeze-dried method is ideal; Some health food ingredients contain high value, easy to lose and deterioration and difficult to preserve, with freeze-drying method The problem can be solved satisfactorily; For some foods with special flavors such as onions, peppers, fruits, coffee, spices, spices and beverages, the use of freeze-drying methods to make it more intense flavor; those daily foods such as vegetables, fruits, aquatic products Meat and eggs can be processed into a variety of convenience foods and fast foods by freeze-drying method. It has the advantages of rapid rehydration, crispy texture, fresh appearance, and convenient consumption. It will be increasingly favored by people. China is a country rich in agricultural and sideline products, native products and Chinese herbal medicines. It is uniquely advantageous to develop various freeze-dried foods and health products. Many local manufacturers have already carried out this work and received good results. It is expected that freeze-dried products will be developed in the next few years.
Rich Farmer International Trade Co., Ltd. , http://www.jnfreshfruit.com