Packaging method for water-leaving freshness preservation of portunus tritubercularus living body

Abstract

The invention discloses a packaging method for water-leaving freshness preservation of a portunus tritubercularus living body. By utilizing a principle that the survival time of the living portunus tritubercularus can be prolonged at low temperature, the invention enables that portunid can still breathe by gills under a water-leaving condition through maintaining air humidity. In the method, a packaging box is a double-layer packaging box, an inner layer is a foam box, an outer layer is a cardboard box, and a plastic box and moist sponge are placed in the foam box; accordingly, the humidity in the box can be maintained, the liquid flowing from the portunid can be absorbed, and the appearance of a commodity portunid is maintained; and in addition, the per se metabolism of the portunid is reduced by soaking the living portunid in a low-temperature water body and placing a plurality of layers of ice bags in the box, thereby prolonging the water-leaving freshness preservation time of the portunus tritubercularus. The method is suitable for sale and breeding units of the portunid, prolongs the freshness preservation time of the portunid under the water-leaving condition and is beneficial to the living body transportation and the sale of the portunid, thereby improving the market value of the portunid.

Description

technical field [0001] The invention relates to a packaging method for fresh-keeping of Portunus trituberculatus living in water, and belongs to the technical field of aquatic product circulation. Background technique [0002] Portunus trituberculatus (Portunus trituberculatus), referred to as Portunus, is an important seawater economic crab in my country. Because of its unique flavor and rich nutritional value, it is very popular among consumers and has a huge market demand. However, Portunus trituberculatus is significantly different from Scylla serrata and Eriocheir sinensis. The Portunus trituberculatus is easy to die after leaving the water. The rapid autolysis of the muscle leads to an increase in the content of harmful substances such as histamine in the crab body, which seriously affects the nutritional value and food safety of Portunus trituberculatus. Therefore, invent a low-cost, simple and easy live fresh-keeping packaging method to prolong the live fresh-keepin...

AI Technical Summary

Problems solved by technology

[0004] 1. Put Portunus trituberculatus in a seawater aquarium, add ice cubes to cool down, and at the same time need to inflate continuously. The fresh-keeping time is usually 12-24 hours. This method is extremely troublesome, costly, and not conducive to transportation. It is only suitable for short-term preservation in supermarkets and aquatic product stalls, which limits the sales range of live swimming crabs;

[0005] 2. Put Portunus trituberculatus in a conventional packing box, use moist sawdust, rice chaff (rice husk), bagasse, etc. as fillers to keep it moist, and then place the entire box in an environment of 2-5 degrees. This kind of packaging method has a better fresh-keeping effect, but this fresh-keeping method often requires a refrigerated truck, a freezer, or a low-temperature climate in winter to provide an environment of 2-5 degrees for storage and transportation, which will inevitably greatly increase the cost of transportation and fresh-keeping, or there are many problems. Large season restrictions; in addition, due to the preservation process of crabs, more liquids tend to flow out, and these liquids are mixed with wood chips and other fillers, which further adhere to the surface of the crab body, resulting in a dirty surface of the commercial crab body and poor appearance. Therefore, sellers or consumers often need to repack these crabs after cleaning, which will be time-consuming, laborious and increase circulation costs.

[0006] Therefore, these two fresh-keeping methods of swimming crabs all have relatively large defects, not only the circulation cost is high, the sales range is small, but also it is not conducive to consumers to carry live crabs, and the swimming crabs need to be cleaned and packaged before sales, which limits to a large extent. This hinders the further expansion of the portunus consumer market, which is not conducive to the further development of the portunus aquaculture industry