The increase in expressible drip of IQF oyster was slower than
those of CPF oyster due to the fact that quick freezing (IQF) resulted
in less tissue damage than slow freezing (CPF). Both freezing method
and antioxidant treatment did not show significant changes in
moisture, crude protein, crude fat, pH and TVB-N. TVC and psychotrophs
of all samples decreased with the storage time. The sensory
scores decreased as the storage time increased. IQF oyster showed
a greater decrease in colour score, i.e., more yellow, but slower decrease
in texture score, i.e., more firmness, than CPF oyster.
Appearance and odour in all samples were not significantly affected
by storage.
Acknowledgements