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本研究利用常规生化和物理分析方法对红色斑点叉尾(Red Ictalurus punctatus)(简称红)和黑色斑点叉尾(Black Ictalurus punctatus)(简称黑)背部肌肉一般营养成分、质构特性、氨基酸和脂肪酸含量进行了分析,并对其营养价值进行了评价。结果显示:黑水分显著高于红,粗脂肪含量显著低于红。红肌肉咀嚼性显著高于黑。红和黑的氨基酸组成基本一致,均含有18种氨基酸(除色氨酸),总含量占鲜肉的15.75%和15.07%;其中7种人体必需氨基酸含量分别为6.18%和5.91%,占总氨基酸含量的39.24%和39.22%,必需氨基酸中均是赖氨酸含量最高,蛋氨酸含量最低,必需氨基酸指数分别为84.99和83.84;根据氨基酸评分(AAS),红和黑第一限制性氨基酸均为缬氨酸;根据化学评分(CS),红和黑第一限制性氨基酸均为蛋氨酸+胱氨酸;红和黑肌肉必需氨基酸构成比例均符合FAO/WHO的标准。红∑MUFA、∑PUFA、EPA+DHA含量以及n-6/n-3PUFA均高于黑。结果表明,红和黑都具有较高的营养价值,红的营养价值略高于黑。
In this study, the general nutrition and texture characteristics of the muscles of the red catfish (Red Ictalurus punctatus) and Black Ictalurus punctatus (black catfish) were determined by conventional biochemical and physical methods. , Amino acids and fatty acids were analyzed, and its nutritional value were evaluated. The results showed that the water content of black currant was significantly higher than that of red and the content of crude fat was significantly lower than that of red currant. Musk chewing red chewing significantly higher than the black flounder. The amino acid composition of Rhododendron chinense and Rhododendron macrophylla are basically the same, all of which contain 18 kinds of amino acids (excluding tryptophan), accounting for 15.75% and 15.07% of the total meat. Among them, the essential amino acids contents of 7 kinds of human body are 6.18% and 5.91% Accounting for 39.24% and 39.22% of the total amino acids. The content of essential amino acids was the highest in lysine and the lowest in methionine. The essential amino acid index was 84.99 and 83.84 respectively. According to the first limit of amino acid score (AAS) According to the chemical score (CS), the first limiting amino acids of both red and black mullet are methionine and cystine; the essential amino acid composition ratios of red mullet and black mulberry muscle are in line with FAO / WHO standards . The results showed that the contents of MMA, ΣPUFA, EPA + DHA and n-6 / n-3PUFA were higher than those of blackflies. The results showed that red and black pomfret have high nutritional value, the nutritional value of pomfret is slightly higher than black pomfret.