Effect of salt and keep freezing on drip and drip protein and TVB-N in four species fishes Liza aurata , Esox lucius , Cyprinus carpio and Rutilus frisii kutum from Caspian Sea

This study was carried out to measure and comparison of drip, drip protein and TVB-N in fishes Liza aurata , Esox Lucius , Cyprinus carpio and Rutilus frisii kutum holding condition without salt and with 2 and 5 percent in house refrigerators with -18, 2011. Sixty samples of fishes were collected from. The measured of drip using to Spectrometer and percent of drip protein and TVB-N was done kjeldahl method. According to the results, highest of drip 50.12±4.27 g and drip protein 4.88±0.32 % in Rutilus frisii kutum in 5 percent salt and lowest of drip 1.67±0.47 g in Esox Lucius in without salt, respectively. Also, the lowest of drip protein was 2.17±0.39 % in Liza aura ta in 5 percent salt. The highest of TVB-N in Cyprinus carpio in 2 percent salt (18.02±1.28 mg/100 g) and the lowest of TVB-N in Liza aurata in 2 percent salt (3.28±0.05 mg/100 g) respectively.