摘要
本文以捕捞后8小时和10小时入冻的茎柔鱼为研究对象,测定了3个可食部分(胴体、鳍和头足)的pH、挥发性盐基氮、三甲胺和K值。结果表明:随着入冻时间的延长,茎柔鱼鲜度下降。捕获后8小时入冻,胴体三甲胺含量已超标;捕获后10小时入冻,胴体TVB-N含量已超过临界值,K值已超过60%,进入初期腐败。建议捕获后8小时内入冻为佳。
Dosidicus gigas was frozen 8 or 10 hours later after capture. The pH, total volatile basic nitrogen, trimethylamine and K value of Dosidicus gigas in edible parts(mantle, fin, tentacle)were investigated. The results showed that the freshness decreased along with the increase of the delaying time before freezing. When Dosidicus gigas was frozen 8 hours later after capture, the content of trimethylamine in mantle exceeded the standard. When the delaying time before freezing was 10 hours, the TVB-N content in mantle passed the criticle point and the K value was higher than 60%, which indicated the state of initial corruption. It is suggested that Dosidicus gigas be frozen within 8 hours after capture.
引文