Generally, the natural pH of live fish is just above 7.0, typically
about 7.3, but this value falls markedly after death as the fish
goes through rigor mortis and glycogen is converted to lactic
acid. In most species, the post mortem pH is between 6.0 and
6.8. In the present study, a gradual increase in pH values with
storage time from 6.2 ± 0.02, 6.2 ± 0.02 and 6.2 ± 0.01 at day
zero has been observed to reach 7.16 ± 0.11, 7.23 ± 0.04 and
7.27 ± 0.01 at 9th, 9th and 18th day of refrigerated storage for C,
R and T groups, respectively