Whether it is the frozen layer of the refrigerator or the freezer of the supermarket, the temperature is much lower than that of the cold room, although the swimming crab temporarily inhibits the proliferation of bacteria in a frozen environment and prolongs the survival time of the swimming crab.

However, if the freezing temperature is too low, it will reduce the fresh flavor of Portunus trituberculatus, making Portunus trituberculatus taste ordinary, and the crab meat is relatively firewood. Therefore, the frozen Portunus trituberculatus can be eaten, but it is generally not recommended to freeze the Portunus trituberculatus.

How to judge whether Portunus trituberculatus has deteriorated?

Touch your eyes. When the swimming crab is in a frozen state, it will start the dormant state and save its physical strength. If you touch the swimming crab's eyes with your hands, it means that they are fresh, while if they don't respond after touching, you can basically judge that the swimming crab may have gone bad after being put for a while.