作　　者： ; ; ; ; ; ; ; ;

机构地区： 南京农业大学无锡渔业学院

出　　处： 《上海海洋大学学报》 2010年第5期635-641,共7页

摘　　要： 用常规方法测定、分析了无锡淡水渔业研究中心选育的2代吉富罗非鱼肌肉中营养成分组成与含量。结果显示,吉富罗非鱼肌肉中水分含量为78.8%,蛋白质为17.39%,粗脂肪为0.89%,灰分含量为1.32。肌肉中共检测出17种氨基酸(除色氨酸),总量占干物质的76.01%。其中包括了7种人体必需氨基酸,占干重的30.46%,占氨基酸总量的40.07%,其必需氨基酸的构成比例基本符合FAO/WHO的标准。吉富罗非鱼限制性氨基酸主要为蛋氨酸+胱氨酸、缬氨酸和异亮氨酸,必需氨基酸指数(EAAI)为69.55,鲜味氨基酸占氨基酸总量的29.55%。脂肪酸中多不饱和脂肪酸含量为24.56%,高于其他优质鲤科鱼类;其中EPA与DHA的总含量为11.9%,高于多种经济鱼类。吉富罗非鱼肌肉的矿物质元素含量丰富、合理。实验结果表明,吉富罗非鱼有较高的食用价值与保健作用。 Nutritional components in the muscle of the 2nd generation GIFT strain of Nile tilapia bred by Wuxi Freshwater Fisheries Research Center were tested and analyzed with routine methods.The results showed that content of moisture,crude protein,crude fat and ash of fresh muscles were 78.8%,17.39%,0.89% and 1.32% respectively.Except tryptophan,17 common amino acids were detected in muscle which include 7 essential amino acids for human body.In dry sample,the total content of amino acids was 76.01% and the content of essential amino acids was 30.46%.The percentage of essential amino acids in total amino acids was 40.07%.The constitutional rate of the essential amino acids accorded with the FAO/WHO Standard.The main limited amino acids of GIFT strain of Nile tilapia were Met＋Cys,Val and Ile.The essential amino acids index（EAAI） was 69.55.In dry sample,the content of delicious amino acids was 29.55%.The content of polyunsaturated fatty acid in fatty acids was 24.56%,which was higher than some other high quality cyprinid fishes.The total content of EPA and DHA in fatty acids was 11.9%,which was higher than some other economic fishes.The composition of trace elements of GIFT strain of Nile tilapia was abundant and reasonable.Mineral elements were rich in GIFT tilapia.It was indicated that GIFT strain of Nile tilapia had high edible value and health effect.

关 键 词： 吉富罗非鱼 肌肉 营养成分 品质分析

领　　域： [农业科学] [农业科学]