4. Conclusions
Fish gelatin caused different effects when added into grade A or FA surimi. Adding fish gelatin into grade A surimi gave gels that did not show changes in their mechanical properties but WHC was improved by adding 7.5 g/kg of fish gelatin. In high gelling grade FA surimi, the mechanical properties decreased by increasing the amount of fish gelatin. Shear stress decreased significantly when 15 g/kg was added and shear strain decreased by adding 7.5 g/kg. The fish gelatin induced only small changes in color attributes that can be detected instrumentally, but not detected by most of consumers. Results obtained indicate that fish gelatin might be used as a functional additive to produce Alaska pollock surimi gels but it is not recommended for the FA grade surimi.