Traditionally processed products of rare seafood products in China, such as scallop sea cucumber shark's fin and dried shrimps, are almost all processed by a dry method. Studies have shown that when the above-mentioned sea products are dried using conventional natural or artificial hot air, the water solubility is There is a certain loss of nutrient-reactive substances such as heat-sensitive substances. At the same time, the volume of the products is severely reduced, rehydration is difficult, and crust cracking of the surface crust is easily oxidized, resulting in discoloration of the product surface and Other quality defects, affecting the uniformity of product quality. And storage resistance. If the use of vacuum refrigeration technology instead of traditional methods to process seafood products, will effectively overcome the above deficiencies, not only can ensure the uniformity of the quality of finished products, but also improve its appearance and intrinsic quality, increase economic efficiency. Freeze-drying technology can obviously improve the quality and grade of products, but it is slow to promote in the aquatic product processing industry. The reason is that decision makers and investors mainly have four concerns: First, the one-time investment of equipment is more, and domestic ZDG-60 needs to be 1.5 million yuan, ZDG-100 needs 2 million yuan, and the cost of imported equipment is higher; Second, vacuum freeze-drying equipment processing costs are high; Third, aquatic products (especially sea products) Supply instability, annual production can not be continuous, off-season for a long time; Fourth, is worried about the market for products. The first is the equipment investment problem. Large-scale production of freeze-dried foods can not be achieved only by freeze-drying machine's own freezing equipment, must use Separate frozen equipment or warehouse pre-frozen food, and then directly into the vacuum dryer can be dehydrated. China's aquatic products processing industry in recent years sluggish operation, some companies are in production semi-discontinued state, most of these companies bring their own refrigeration equipment or refrigeration The library, investors can fully use these ready-made plant equipment, simply add the vacuum drying equipment corresponding to the production capacity, you can produce vacuum freeze-dried foods, thereby greatly reducing the investment in disposable equipment. From the perspective of processing costs, according to the US Department of Agriculture According to the information provided, the processing fees for vacuum freeze-dried foods are more than twice that of frozen foods and canned foods, but their sales and storage costs are low. From the total cost of the entire processing and distribution process, vacuum freeze-dried foods are 1.02 times that of canned foods. 1.28 times that of frozen foods. The difference between the three is not significant. If the freeze-dried fish is a more expensive raw material such as aquatic products and marine drugs, then The proportion of raw material costs to the total cost will be very close. At this time, the advantages of high-quality, high-grade, high-priced products of freeze-dried foods will be shown. The raw material production of aquatic products is not stable, and the annual output of varieties varies by a large margin and is seasonally strong. A major feature of aquatic products production. At present, the international market has high demand for high-grade and high-quality vacuum freeze-dried foods in terms of quantity and variety. Therefore, it is necessary to break the traditional single production and business model and engage in series of diversification. Product production. Freeze-dried food factory can choose other kinds of foods according to geographical conditions, according to different seasons to match the production, in order to ensure the continuity of enterprise production. This is not only easy to organize production, improve equipment utilization and economic efficiency, but also rich The variety of enterprise products has enhanced the company's ability to withstand market risks. As for the market sales of products, from the perspective of foreign markets, the demand for freeze-dried foods has increased year by year. As long as the product quality is excellent, the export market is extremely promising. Domestically, with the With the continuous improvement of the people’s living standards, the demand for dietary standards is getting higher and higher, and the demand for high-quality, high-grade freeze-dried foods has great potential. Those who do a good job of propaganda and guidance work will surely get a good return from the market. The above discussion and analysis show that the application of vacuum freeze-drying technology in China's aquatic product processing industry is feasible and has bright prospects. The application of vacuum freeze-drying technology will undoubtedly To inject new vitality into China's aquatic products processing industry that is about to enter the 21st century, and together with other high-tech technologies, it will play a huge role in promoting the future development of China's aquatic product processing industry.
Rich Farmer International Trade Co., Ltd. , http://www.jnfreshfruit.com