Effects of skipjack roe protein hydrolysate (SRPH) at various levels (0e3 g/100 g) on properties and
oxidative stability of emulsion sausage from broadhead catfish (Clarias macrocephalus) fortified with
skipjack tuna roe lipids were investigated. The addition of SRPH increased hardness, cohesiveness and
resilience of sausage (p < 0.05). Finer fat globules were visualised in the sample added with SRPH at
higher amounts. Nevertheless, the incorporation of SRPH at all levels had no impact on likeness of
sausages. SRPH was shown to retard lipid oxidation of sausage during extended storage of 12 days as
evidenced by the lower peroxide value (PV) and thiobarbituric acid-reactive substances (TBARS), in
comparison with the control. After 12 days, the sausage with 3 g/100 g SRPH had the retained docosahexaenoic
acid (DHA) and eicosapentaenoic acid (EPA), accounting more than 80%. Addition of SRPH had
no effect on the organoleptic properties but could prevent the development of rancidity. Nevertheless, it
showed no pronounced impact on microbial growth. SRPH could therefore be used as a natural antioxidative
emulsifier in cooked fish emulsion sausage.