Separation of MDA-TBA was done using a Phenomenex Gemini C18 column (5 lm, 150 4.6 mm), operated isocratically with a HPLC mobile phase pumped at 1.0 ml/min and consisting of 50 mM KH2PO4 buffer solution, methanol and acetonitrile in the proportion 72:17:11 (v/v). In this method, injection volume was 10 ll, sample run took 8 min and retention time for MDA-TBA was near 5.5 min. Spectrofluorimetric detector wavelengths were set at 525 nm (excitation) and 560 nm (emission). Results were expressed as micromoles MDA present in 1 kg of muscle