Cryogenic and Quick Freezing Treatment of Aquatic Products by Liquid Nitrogen Preservation

In summer, the fishing season of seafood and aquatic products has entered again. While enhancing production capacity, aquatic enterprises are also competing in storage, transportation and preservation. With the excellent quick freezing effect, the liquid nitrogen fresh-keeping technology provided by Guangzhou Quick for aquatic enterprises can not only guarantee the taste and quality of seafood, but also bring good economic benefits to customers. It is one of the advanced seafood freezing technologies at present.

Really High Efficiency "Quick" Freezing by Liquid Nitrogen Preservation

As a key link in seafood fishing and production, preservation has become a new battlefield for aquatic enterprises to compete. Quick freezing is the key to success. The mechanical freezing or ice-coating method commonly used by aquatic enterprises takes a long time to cool down. However, some freezing methods using refrigeration storage, whose temperature drops from room temperature to - 18 C, take more than a dozen hours. These freezing methods can not achieve real quick-freezing.

A large fishery company in Zhoushan, Zhejiang Province, has an annual production capacity of more than 10,000 tons, and can catch Portunus crab up to 80 tons per day in peak season. After using self-accumulating screw liquid nitrogen freezer, it not only meets the daily needs of aquatic products freezing treatment, but also shows the omni-directional advantage of liquid nitrogen fresh-keeping ahead of traditional fresh-keeping methods. As the lowest working temperature of liquid nitrogen can reach - 196 C, when seafood enters - 80 C liquid nitrogen freezer, the captured seafood will fall to - 5 C in a very short time, and then to - 50 C more quickly. This is a real quick freezing scheme to protect cells from damage, and perfectly preserve the fresh taste of food. Moreover, liquid nitrogen is non-toxic and harmless, and will not have any chemical impact on food. It is a wise choice to absolutely guarantee food safety.

Taking the enterprise as an example, the fishing season of Portunus crab is from July to November every year. The enterprise can catch 80 tons of Portunus crab every day. The original fresh-keeping technology can not match the production capacity. Now, with the help of liquid nitrogen freezer, the company has fully achieved the quick-freezing treatment of fresh Portunus crab every day in the peak fishing season.

Liquid Nitrogen Preservation Brings Multi-Benefits to Customers

Through the implementation of liquid nitrogen fresh-keeping technology, the aquatic enterprise not only surpasses the original fresh-keeping methods in quick-freezing technology and efficiency, but also reduces investment costs, product value-keeping and value-added, and shortens the investment return cycle to bring customers more than expected returns. Therefore, it helps customers to gain absolutely leading comprehensive competitive advantage in this market.

For enterprises, in addition to the expenditure cost of hardware itself, they also need to consider the occupied area and space of equipment, user management and training, post-maintenance and other software investment. The liquid nitrogen freezer covers a small area, involves less investment in labor and management, and can also reduce the high cost of plant investment. Overall, the benefits of using liquid nitrogen preservation technology are above the plan.

For seafood and aquatic enterprises, preservation and reduction of price loss caused by water loss is the preservation or even value-added of products. Take Portuguese crab as an example. When Portuguese crab is freshly preserved by liquid nitrogen to reach the sales terminal through transportation, there is little difference in meat quality and taste between Portuguese crab and freshly fished products except that it can maintain the original body color. More importantly, it can reduce the water loss by 3% during the storage and transportation of seafood products, which means that enterprises have increased their net profit by 3%. The reduction of investment cost and the increase of income and profit will undoubtedly further shorten the investment return cycle of enterprises.

China's marine fishing and aquatic consumption have been developing at a high speed, reaching 14 million tons in 2013, and so far this figure is still growing rapidly. Guangzhou Extreme Rapid Liquid Nitrogen Freezing Machine, through advanced liquid nitrogen quick-freezing and fresh-keeping technology, effectively improves the quick-freezing efficiency by 5%, while locking in profit space, providing efficient and reliable solutions for seafood, aquatic products, meat and other products quick-freezing. People's unremitting demand for "fresh" is the driving force for fishing enterprises to actively seek industrial upgrading, and also provides a useful place for liquid nitrogen quick-freezing fresh-keeping technology. The liquid nitrogen preservation technology, with its advantages in safety, efficiency and economy, is gaining increasing popularity in the market. It will help China move from a big seafood country to a powerful seafood country and enable more people to enjoy a high-quality "fresh" life.