EFFECT OF DIFFERENT PARAMETERS OF ACIDIC ELECTROLYZED WATER BACTERIA-INHIBITING ON THE PHYSIOLOGICAL PROPERTY OF LITOPENAEUS VANNAMEI
酸性电解水的减菌化参数对凡纳滨对虾(Litopenaeus vannamei)肌肉生化特性的影响

Acidic electrolytic water was applied in this study to inhibit the bacteria from Litopenaeus vannamei. Several assessment standards of physiological property such as actomyosin content, Ca2+-ATPase enzyme activity, total sulfhydryl activity (T-SH) and active sulfhydryl (A-SH) content were measured to evaluate the influence of using acidic electrolytic water with different pH value or treating time on the meat quality of L. vannamei. The data obtained from the experiment showed that the actomyosin, T-SH, A-SH content and Ca2+-ATPase enzyme activity had a large decrease when using the acidic electrolytic water at a low pH value or extending the treatment time. The detail changes of each assessment standard after the treatment of acidic electrolytic water with the pH value 2.62, 3.18 and 4.06 for 60 minutes were respectively shown as follows: the content of actomyosin had a decrease of 98.7%, 90.0% and 73.7% and the inactive rates of Ca2+-ATPase were 93.4%, 87.8% and 84.3%. Results also showed the content of T-SH had a decrease of 57.8%, 42.3% and 40.3% and the content of A-SH had a decrease of 77.8%, 65.9%,30.7% as well, which indicated the conditions of using the acidic electrolytic water had a significant impact on the quality of L. vannamei.