对黄鳍和长鳍2种金枪鱼赤身部位肌肉的营养成分进行分析与评价。结果表明:黄鳍和长鳍金枪鱼赤身水分含量分别为72.43%和72.73%,脂肪含量分别为0.54%和0.19%,蛋白质含量为25.21%和26.63%,灰分含量为1.32%和1.53%,均含有丰富的矿物质元素;黄鳍和长鳍金枪鱼赤身多不饱和脂肪酸含量高,尤其是DHA含量可高达28.84%和29.83%。黄鳍和长鳍金枪鱼赤身氨基酸配比合理,必需氨基酸含量分别为40.70%和41.70%,必需氨基酸指数(EAAI)分别为92.62和95.00,并含有丰富的呈味氨基酸,其含量分别为40.81%和42.31%。因此,2种金枪鱼赤身肌肉蛋白含量高,脂肪含量低,具有较高的营养价值。

In this paper,nutrients of akami muscle of two tuna( Thunnus albacores,Thunnus alalunga) were analyzed and evaluated. The results show that: 1) the moisture content of T. albacares and T. alalung was 72. 43%,72. 73%; fat was 0. 54%,0. 19%; protein was 25. 21%,26. 63%; ash was 1. 32%,1. 53%. The akami of two tuna all had rich content of mineral element. 2) The akami of T. albacares and T. alalung had higher content of polyunsaturated fatty acids,especially DHA content can be as high as 28. 84%,29. 83%. 3) The akami of T. albacares and T. alalung had a reasonable amino acids ratio. Essential amino acids content was 40. 70%,41. 70%,and EAAI was 92. 62,94. 97. It was rich in flavor forming amino acids,the content was 40. 81%,42. 31%. Therefore,the akami of two tuna had higher protein content and low fat content and were very nutritious.