Freezing processing method and processing system for large-type fishes

Abstract

A freezing processing device for fish pieces and its freezing processing method. The method is to remove the internal organs of captured large fish such as tuna at the fishing site, and cut the fish body into different pieces before freezing; at the same time, it is best to After making a label indicating the fish species, fish body, fishing area and quality, the quality display label is affixed to the fish pieces before freezing and then frozen; in addition, at least fat mass measurement and color difference measurement are performed A kind of quality measurement in which, after making a quality display label, the quality display label is affixed to the fish fillet before freezing; at least one of the cut surfaces of the fish fillet is made of a material with high thermal conductivity The heat transfer plates are in surface contact, so that the refrigerant impacts the heat transfer plates and freezes them. It is best to freeze them quickly below -50°C. Even if frozen in blocks using this method, they will not break at all, and large fish can be frozen with high quality at the fishing site.

Description

technical field [0001] The present invention relates to the frozen processing method of large-scale fish and its processing production system, and it is to process the large-scale fish such as skipjack, tuna caught on fishing boat or the fishery base of 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 if figure 1 As shown in (B), large fish such as these tuna caught in the sea, especially in the open sea, are completely ( One) frozen at a temperature of -50 to -60°C to form a frozen fish body, stored and transported at this temperature, and unloaded at a fishing port in Japan. [0003] That is to say, large fish caught by distant water fisheries are not processed products, bu...

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

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