Effect of High Pressure on the Water-free Survival of Crucian Carp

In order to solve the problems of fresh aquatic products,the costly water transportation,the difficult transportation,and the high mortality rate. crucian carp was used as the research object,and the effects of high pressure of 0.15,0.20,and 0.25 MPa on the water retention of crucian carp were studied,and the optimal pressure for waterless survival was found. The results showed that there were significant differences in muscle texture,pH,muscle glycogen,lactic acid,and total protein contents in the four periods of time(0,4,8,and 12 h),and the elastic and chew ability indexes of the texture were the highest in the high pressure 0.20 MPa environment,and the serum total protein and muscle glycogen contents in the blood of the crucian carp were the highest. The pH and lactic acid changes were the most gradual,with the lowest respiratory rate 22~25 beats/min. Therefore,the high pressure of 0.20 MPa was the optimum pressure for the crucian carp to keep the water alive.