Patent ID: 7507428

Claim:
A method for producing meat products, whale meat products, fish meat products or fish paste products, comprising the steps of: providing a raw meat material including hemoglobin and myoglobin having metalloporphyrin moieties; providing a phosphoric acid buffer solution including zinc gluconate or zinc acetate, the phosphoric acid buffer solution having a pH value of 5.5 to 7.0; applying the raw meat material to the phosphoric acid buffer solution; heating the buffered raw meat material at a temperature of 37° C. to 72° C. for a period of 1 hour to 5 days to convert the metalloporphyrin moieties into a red pigment of zinc protoporphyrin IX complex, wherein the meat products, whale meat products, fish meat products or fish paste products include the red pigment at an amount of 0.05 to 0.5% per weight of the raw meat material, wherein nitrite is not used in the steps.