Shrimp tail frozen preservation. Shrimp tail is generally dead, generally cooked shrimp is recommended to refrigerate, dead shrimp is recommended to freeze, because the dead shrimp is more likely to own bacteria, freezer temperature is not enough, can not completely isolate the bacteria as well as microbial growth, and secondly, after the tail of the body of the lobster histidine will be broken down into a number of toxic substances, frozen to save the effective reduction of the rate of generation of toxic substances to maintain a certain degree of freshness, it is recommended that it is better to freeze and save.