Investigations on the changes of free fatty acid (FFA) value and thiobarbituric acid (TBA) value of fish muscle lipids during chilled storage were carried out. Experimental results showed significant increases in FFA and TBA values during storage. The FFA and TBA values of unirradiated fish were also determined. It was observed that radiation treatments at doses of 2.5 and 5.0 kGy gave no significant effects on FFA values. On the other hand the TBA values of irradiated samples were significantly higher than those of unirradiated samples, indicating that oxidative changes have occured due to radiation. TLC investigations on muscle nonpolar-, phospho- and glycolipids of control and fish samples, irradiated at doses up to 10 kGy revealed that the lipid components or irradiated fish were identical with those of control.
Sofyan, R 
- National Atomic Energy Agency, Jakarta (Indonesia). Pasar Djumat Research Centre