The effects of carboxymethyl starch eontent, pH, temperatures, and adsorption times on decolourization of porcine hemoglobin hydrolysate by enzyme were studied in this paper. The results showed that optimum discolouration conditions were followed: 2% carboxymethyl starch, solution pH value of 4. 0, room temperature, and adsorption time of 60min. Under above conditions, the freezing- dried pro...