Abstract: With the scobiculate Carbraffin as decolorizer, the fish protein hydrolysate is decolored in sorts of conditions (the used quantity of Carbraffin, pH, temperature and time). Through being compared, the results indicate that when the used quantity of Carbraffin is 2%, pH = 3. 0, t℃ = 20℃, t = 1h, the decolored effect on the fish protein hydrolysate is clear and the loss rate of acide amino is only 3. 5% -5. 0%.

Key words: Carbraffin Engraulis Japonicus Fish protein hydrolysate