Processing effects on lead and cadmium contents
Statistical analysis using paired sample t-test showed that the concentrations of lead ( Table 2) and cadmium (Table 3) in skipjack were significantly different (p < 0.05) before and after cooking and sterilisation by autoclave. Significant differences (p < 0.05) were also found in the lead (Table 2) and cadmium (Table 3) concentrations of yellowfin before and after defrosting, cooking, and sterilisation.