Figure (1) also shows the pH values during storage period for the different mozzarella cheese types. The pH of CMMC was 5.2 ± 0.1, this value is similar to that of Sameen et. al.[9], who reported a value of 5.23 ±0.01 in cow's milk mozzarella cheese. The pH of GMMC (5.21 ± 0.001) was in close agreement to the value 5.6 ± 0.1 obtained by Srbinovska et. al.[8]. The pH of MMMC was significantly lower than that of CMMC and GMMC throughout the storage period. No significant difference was found in pH of GMMC compared to that of CMMC throughout storage period.