金沙江长鳍吻鮈的含肉率及营养成分分析

试验测定了长鳍吻鮈（Rhinogobio ventralis）含肉率及其肌肉常规营养成分（蛋白质、脂肪、灰分、水分）、矿物元素（钙、磷、钠、镁、铜、锌、铁、锰、铬、硒）和氨基酸组成,并对其营养价值作了综合评定。结果表明,长鳍吻鮈含肉率为（69.51±4.91）%;肌肉（鲜样）中水分、粗蛋白、粗脂肪和灰分的含量分别为（7...

Analysis of the Ratio of Flesh Content and Nutrient and Evaluation of Nutritional Value For Rhinogobio ventralis

A analysis of the ratio of flesh content and the contents of the main nutrients （ such as protein, fat, ash content, moisture） were analyzed, mineral elements, amino acids composition in its muscle were done for Rhinogobio ventralis. Moreover, its nutritional value was evaluated and compared with other fishes. The ratio of flesh content of R. ventralis was（69.51 ±4.91 ）%o. And the proportion of moisture, crude protein, crude fat and ash content is（70.14 ±0.72）% ,（17.26 ±0.47）% ,（11.28 ±0.64）% and （0.87 ±0.03）%. In wet matter, the total content of 17 amino acids was found （ 16. 15 ± 0. 26）%, including （6.31 ＋ 0. 11 ）% essential amino acids, 39.10% in total amino acids, and （6.27 ±0.11） %. 4 delicious amino acids account for 38.83% in total amino acids. Essential amino acids to no-essential amino acids were 64.20%. The constitutional rate of the essential amino acids accorded with the FAO/WHO standard basically. The essential amino acids index was 82.17. According to the amino acids score （AAS） , the first limited amino acid was isoleucine and the second limited amino acids was valine ; on the basis of chemical score （ CS）, the first limited amino acids was methioniue ＋ cystine and the second limited amino acids was isoleucine. 10 mineral elements were determined in the muscle. The range of average contents of macroelements including Ca, P, Na and Mg was 296.32 -3278.14 μg/g and that of microelements including Cu, Zn, Fe, Mn, Cr and Se was 0.06 -112.5 μg/g . Ca： P averaged 1： 2.1.