In order to solve the problems of people's lack of time, complicated processing, and difficulty in cooking, we can eat a lot of delicious and nutritious yellow croaker raw at all times and places. At this stage, the food freeze-drying machine is used in the freeze-drying processing and manufacturing of yellow croaker. The processing of yellow croaker with various flavors is freeze-drying by vacuum pump to remove the moisture. The original color, smell, taste, shape and nutritional composition of the stored yellow croaker will not change basically. It does not need to add any additives. It can be stored at room temperature for a long time to facilitate the circulation and use of goods.

With the development trend of freeze-drying technology, food freeze-drying machine has been widely developed, designed and applied in freeze-drying of various vegetables and fruits, meat food and fish seed food.

Among them, freeze-dried yellow croaker is to carry out the ultra-low temperature freezing cleaning of the origin according to the baffle plate of the food freeze-drying machine equipment, and then immediately lift the ice of yellow croaker into gas under vacuum, and remove it according to the cooler of the food freeze-drying machine equipment to obtain the freeze-dried yellow croaker with a water content of about 2~5%.

In the processing method of food freeze-drying machine, the growth and reflection of the nutrient enzymes of the food materials have basically stagnated, and there is almost no redox reaction. The nutrient components and a small amount of effective chemical components of freeze-dried yellow croaker have been maintained. The improvement of drying is a physical phenomenon, and the physical properties of the chemical substances of the food materials will not change basically. After freeze-drying, the food materials will be in sponge porous structure