Research on the Marinated Fish. (1)

The swelling of fish muscle immersed in acid solution was observed. (1) The maximum value of swelling (muscle of Ommastrephes sloani pacificus) is shown in the solution of PH=1.8-2.0 (2) In acid solution of various pH values the water content of the muscle immersed and the amount of nitrogen dissolved from it change in the same tendency with the degree of the swelling. (3) The ionic strength of acid has an important effect upon the swelling of muscle. (4) In the muscle protein of Ommastrephes sloani pacificus the isoelectric point is pH=3.5 ?? 4.0 and in that of Cyprinus carpio it is pH=4.2.