Abstract: The manufacturing method of the processed food of shrimp of the present invention enables new processed food of shrimp to provide, in which it has especially fine eating quality in comparison with conventional processed food of shrimp and degradation does not occur in preservation over a long time. A processed food of shrimp of the present invention contains tail part muscle mainly, in which protein content P, free glysin content Gl, and free proline content Pr satisfy respective conditions of below-described A and B simultaneously. The manufacturing method thereof is that there is obtained heat-treated shrimp in such a way that fresh shrimp is subjected to heat-treating while bringing the fresh shrimp into contact with hot water or saturated steam not less than 85° C. before cooling so that lengthwise direction crush strength (N/cm2) of specimen of the tail part muscle of the shrimp, whose size is 5±0.

Abstract: The prawn preservative of the invention includes an ascorbic acid compound at effective concentration and a reducing sugar compound in a ratio of 0.1-1 to the ascorbic acid compound contained. The method of preserving a prawn according to the invention includes subjecting a prawn maintained in a living state, in a raw state not undergoing apparent denaturation after death, or in a raw state not undergoing apparent denaturation after the thaw from a frozen state to treatment by dipping in the range of 0.3 to 5 minutes in a prawn preservation treatment solution consisting of an aqueous solution having an ascorbic acid compound at effective concentration and a reducing sugar compound in a ratio of 0.1-1 to the ascorbic acid compound contained, and then preserving the prawn under refrigeration or freezing.

Abstract: The manufacturing method of the processed food of shrimp of the present invention enables new processed food of shrimp to provide, in which it has especially fine eating quality in comparison with conventional processed food of shrimp and degradation does not occur in preservation over a long time. A processed food of shrimp of the present invention contains tail part muscle mainly, in which protein content P, free glysin content Gl, and free proline content Pr satisfy respective conditions of below-described A and B simultaneously. The manufacturing method thereof is that there is obtained heat-treated shrimp in such a way that fresh shrimp is subjected to heat-treating while bringing the fresh shrimp into contact with hot water or saturated steam not less than 85° C. before cooling so that lengthwise direction crush strength (N/cm2) of specimen of the tail part muscle of the shrimp, whose size is 5±0.