This study was performed to improve the toughness of raw fish muscle, "sashimi" by electrical stimulation.
The plaice(Paralichthys alivaceres) were electrically stimulated in seawater bath with various time (5secc., 15sec., 30sec., 60sec., and 150sec...
This study was performed to improve the toughness of raw fish muscle, "sashimi" by electrical stimulation.
The plaice(Paralichthys alivaceres) were electrically stimulated in seawater bath with various time (5secc., 15sec., 30sec., 60sec., and 150sec. by 110V/60Hz) and voltage(22.5V, 50V, 110V, and 400V) and killed instantly with spiking at the head. The changes in ATP and its related compounds and breaking strength of muscle were investigated. Influence of live fish density and water volume in bath were investigated, also.
As the time of electrical stimulation(110V/60Hz) was lengthened, the ATP breakdown was accelerated. The contents of ATP in samples were 5.07μmole/g for 5sec., 4.28μmole/g for 15sec., 3.81μmole/g for 30sec., 3.54μmole/g for 60sec., and 3.06μmole/g for 150., As the voltage of electrical stimulation was strengthened, ATP in samples decomposed rapidly, also.
The level of breaking strength in muscle of the plaice was 999.54±37.6g immediately after killing. Values of breaking strength in samples electrically stimulated were effectively increased until 30sec. However, the breaking strength was not increased in samples stimulated for 60sec and 150sec., Values of breaking strength for each samples stimulated electrically for 5, 15, 30, 60 and 150 second were 995.4±37.6g, 996.3±58.09g, 1.73.2±32.7g, 1230.6±48.2, 785.6±53.0g, and 680.3±38.1g, respectively.
Live fish density and seawater volume in the bath were not influenced on the changes of ATP and breaking strength of the muscle.