This study was carried out to process canned ask shell with highly quality by management of proper prosessing conditions for prevention of oxidation and discoloration by heating. Ark shell has hemoglobin as blood pigment in red blood shell which same as other cockles. Hemoglobin is easy to come oxidation and browning reaction, and it has large contents of carotenoid as meat pigment. Proximate compositions in ark shell were 76.9% of moisture, 18.1% of crude protein, 1.8% of crude lipid, 1.3% of carbohydrate and 1.6% of crude ash. And contents of carotenoid and hemoglobin were 0.67∼1.02 mg% and 0.98∼1.64/dl, respectively. When the living ark shell was soaked in 2% Nacl solutions, about 89% of mud was removed after 10 hours soaking, and over 91% was removed when the pH was adjusted to 7.5. Carotenoid pigment were prepared that extracted from ark shell by using acetone. And determined visible spectrum were two peak at 452 nm and 687nm, and λ_max were 452 nm. During thermal treatment at 95℃, 111℃, 116℃ and 121℃ for 60 minutes, retention ratio of carotenoid were 71.8%, 66.8%, 64.4% and 36.5%, and after 120 minitues retention ratio were 56.6%, 30.6%, 30.3% and 17.2%, respectively. When heated at 95℃, 111℃, 116℃ and 121℃, formation of browning material were increased at high temperature and long time treatment.

건조과정 중의 amine의 함량 변화는 초기건조 온도의 상승으로 DMA와 TMA의 함량이 건조 9일째까지 급격히 증가하였고, 인공건조의 경우가 자연건조보다 DMA, TMA 함량이 낮게 나타났다. TMAO의 경우, 건조과정 중 분해되어 함량이 감소되어 DMA, TMA 함량과 역상관계를 보였다. DMA와 TMA의 생성은 건조과정에서 생성되고 있으며 유통과정에서 더욱 많이 발생된 것으로 사료되므로 유통에 따른 유해성 문제점을 심각하다고 판정되므로 유통방법 개선이 필요하다고 생각된다.