咸海卡拉白鱼的含肉率及肌肉营养成分

对池塘养殖的2龄和3龄咸海卡拉白鱼Chalcalburnus chalcoides aralensis的鱼体组成及营养成分进行了分析。结果表明：2龄和3龄鱼蛋白质的质量分数分别为19．59％、16．39％，脂肪的质量分数分别为1．81％、6．72％；3龄鱼的含肉率为65．02％，17种氨基酸总量为19．129％（鲜重，质量分数，下同），必需氨基酸含量为8．916％，其中赖氨酸Lys极为丰富（2．195％），4种鲜味氨基酸总量（8．549％）明显高于其它鱼类，而谷氨酸Glu含量最高（4．087％）；用气相色谱仪测得3龄鱼含有17种脂肪酸，其中多不饱和脂肪酸（PUFA）含量最高（24．1108mg／g），其次为单不饱和脂肪酸（MUFA）（22．3932mg／g），饱和脂肪酸（SFA）含量最少（10．2916mg／g）。

Nutritional composition and dressed fish of Shemaia(Chalcalburnus chalcoides aralensis)

The biochemical composition and dressed fish of two-and three-year old Shemaia(Chalcalburnus chalcoides aralensis) cultured in ponds were determined by means of a biochemical method and high liquid chromatography.It was found that the dressed fish was 65.02%.There were 19.59% of crude protein and(1.81%) of crude fat in two-year old fish.The total content of 17 amino acids was(19.129%) in muscle from three-year old fish,in which the essential amino acid accounted for 8.916%.The amount of lysine was as high as 2.195%,and four delicate amino acids accounted for 8.549%.There were 17 fatty acids in the muscle of three-year old Shemaia,polyunsaturated fatty(PUFA) being the maximum(24.1108 mg/g) and saturated fatty(SFA) being the minimum(10.2916 mg/g).