In the process of thawing the samples taken to frozen storage for 6 months periodically every month by using
three different methods, the values of pH, aw and humidity were determined. When the applied thawing system is
taken into consideration, it was found out that there were differences among groups only after thawing in the 2nd
month (p0.05).
In general, as a result of the evaluation of frozen and thawed meat in terms pH value, it was observed that the
values changed between 5.47-5.80 from the beginning and during the entire storage period (Table 2). Many
researchers investigated the changes in pH values of meat during cold and frozen storage. Ziauddin et al. (1993)
determined that the pH values of meat subjected to plate type freezing and flash freezing for 3 months were between
5.91-6.06. Farouk and Swan (1998) reported that pH values in beef changed between 5.48-5.61 during frozen
storage. Boles and Swanb (2002) determined that pH value of raw meat was 5.55 at the beginning and it was 5.74
after 8 week storage at -1.50C. Hernández et al. (2006) determined the changes in color of M. longissimus dorsi
muscle and pH values. The researchers detected that the animals slaughtered under stress had pretty (6.37) high pH
value 24 hours later, on the other hand, pH value of animals slaughtered under normal conditions was 5.47. Farouk
et al. (2013) expressed that there was a positive correlation in frozen meat between the freezing point and pH value,
and pH value increased as the temperature rose. Apple et al. (2014) reported that the pH value belonging to M.
gluteus medius muscle changed between 5.40-5.43.