Freezing processing method and processing system for large-type fishes

Abstract

The present invention provide a freezing processing method for fish body blocks. The internal organs of large-sized fishes such as tuna fish-caught in a fishing site such as the interior of a fishing vessel having a freezing apparatus are removed and the fish bodies are cut into blocks in the fishing site before freezing and display labels for displaying the quantities in addition to type of fish, fish bodies and fished places are prepared and each quality-displaying label is preferably attached to the block before freezing and at least one quality measurement of lipid measurement and color difference is carried out in the fishing site after fishing and before freezing and the display labels for displaying the qualities in addition to type of fish, fish bodies and fished places are prepared and the quality-displaying labels are attached to the blocks before freezing and a cooling medium is made to collide with a heat transfer plate composed of a material having high heat conductivity in a state in which at least one face among cut faces of the block is brought into face contact with the heat transfer plate and the block is frozen, preferably rapidly frozen to -50 DEG C to carry out freezing. The invention is capable of carrying out freezing of large-sized fishes in good quality on a fishing vessel or in a fishery base in the neighborhood thereof without causing breaking of the fish body even when frozen in each block unit.

Description

technical field [0001] The present invention relates to the frozen processing method of large-scale fish and its processing production system, it is to process the large-scale fish such as skipjack, tuna caught on the fishing boat or the fishery base of fishing fishing boat; More specifically, the present invention It relates to a method for efficiently freezing large fish blocks and a subsequent distribution method. Background technique [0002] At present, most of the fishing operations for large fish such as tuna and skipjack are carried out by so-called pelagic fisheries. Then, as shown in Fig. 1(B), large fish such as these tunas caught in the ocean, especially in the open sea, are removed after viscera, etc. , Whole (one piece) is frozen at a temperature of -50 to -60°C to form a frozen fish body, stored at this temperature, transported, and unloaded at a fishing port in Japan. [0003] That is to say, large fish caught by distant water fisheri...

AI Technical Summary

Problems solved by technology

[0011] Moreover, tuna has a body length of 3m and a weight of more than 400Kg. The tuna of 80Kg to 150Kg is supplied to consumers as cold companion fish made by restaurants as sashimi or rice rolls as mentioned above, so instead of whole tuna It is more cost-effective to buy than to buy by different cuts of meat

[0012] The actual situation is to transport the frozen tuna on the ship to the land, and the temperature rises from -50°C to -20°C to 0°C to thaw, cut, cut into different pieces of meat, and display them on the shop floor by the broker or small owner For sales, it is also considered in terms of freshness or taste, and because it is cut with tools such as sawtooth, there is a problem that the surface of the front end becomes rough and the surface quality is greatly reduced.

[0013] Moreover, the grade of tuna has a great difference in price depending on the number of large sections. This judgment is made by the so-called "tail surface", that is, the section where the root with the tail is cut off. Extremely proficient, often erroneous in judgment

Images