]0y-f^ 



196 

 atmospheric CO^; potato PPO was more resistant to high pressure CO2 than 

 lobster and shrimp PPOs. CO^ (1 atm) -treated and untreated PPO did not 

 show any differences in protein patterns and isoelectric profiles, the 

 high pressure CO2 treatment however affected the protein patterns and 

 isoelectric profiles as well as secondary structures of the treated 

 sample. 



