The pH values of restructured products was increased slightly
with time varying from 6.15 on 0 time to 6.28 on 12 days. These
values were higher than values determined by other authors in
other species of tuna like Thunnus obesus (Ruiz-Capillas & Moral,
2005) and similar to that determine on mince tuna (6.60)
(Takahashi et al., 2012). Usually, pH value is increasing quickly with
fish products degradation but in our products the increase was
slow.