【摘要】 采用常规方法分析体质量为(198±3.25) g南极冰鱼鱼骨(去头脊椎骨)、鱼肉、鱼头及鱼皮的基本营养成分、脂肪酸、氨基酸及矿物质元素含量,分析南极冰鱼不同部位的品质情况。试验结果显示,南极冰鱼鱼肉和鱼皮均属于高蛋白原料,鱼骨和鱼头的脂肪、灰分含量相对较高。各部位均检测出28种脂肪酸,11种饱和脂肪酸,17种不饱和脂肪酸;鱼骨、鱼肉、鱼头、鱼皮的饱和脂肪酸含量差异显著,分别占总脂肪酸的25.15%、24.87%、30.96%、31.91%(P<0.05),不饱和脂肪酸含量差异显著,分别占总脂肪酸的49.50%、52.27%、37.64%、76.64%(P<0.05),其中鱼肉多不饱和脂肪酸中二十碳五烯酸和二十二碳六烯酸含量尤其丰富,共占总脂肪酸的31.68%。鱼肉、鱼头均检测出17种氨基酸,鱼骨和鱼皮均检测出16种氨基酸,缺少胱氨酸;鱼骨、鱼肉、鱼头、鱼皮的氨基酸总量差异显著,分别占干质量的35.18%、77.77%、44.24%、69.16%(P<0.05);鱼肉和鱼皮的天冬氨酸、谷氨酸、甘氨酸和丙氨酸总量均高于鱼骨和鱼头。南极冰鱼不同部位均检测出多种矿物质元素且含量存在差异(P<0.05),鱼肉中镁、钾元素含量丰富,鱼骨和鱼头中镁、钙、锰元素含量丰富尤其是鱼骨中钙元素大量存在,鱼皮中镁、铜、锌、铁元素含量丰富。综上所述,这将为以后综合利用南极冰鱼提供数据基础。更多还原

【Abstract】 The contents of approximate compositions, fatty acids, amino acids and mineral elements were analyzed in bones, flesh, head and skin of Antarctic icefish Channichthys mithridatis with body weight of(198±3.25) g by conventional methods and the quality of different parts of the icefish was evaluated. It was found that the Antarctic icefish had high protein content in flesh and skin, and was rich in fat and ash contents in bone and head. A total of 28 kinds of fatty acids, 11 kinds of saturated fatty acids and 17 kinds of unsaturated fatty acids were detected in different parts of Antarctic icefish, in which there were significant differences in percentage of saturated fatty acid content in total fatty acid content in various parts(P<0.05), accounting for 25.15% in bone, 24.87% in flesh, 30.96% in head and 31.91% in skin. There were significant difference in percentage of unsaturated fatty acid content in total fatty acid content in various parts(P<0.05), accounting for 49.50% in bone, 52.27% in flesh, 37.64% in head, and 76.64% in skin, with 31.68% of EPA and DHA in total fatty acids of Antarctic icefish flesh. Seventeen kinds of amino acids were detected in flesh and head, and 16 kinds of amino acids in bone and skin, without cystine. There were significant differences in percentage of total amino acids(P<0.05), accounting for 35.18% in bone, for 77.77% in flesh, 44.24% in head, and for 69.16% in skin in dry weight. The total amount of Asp, Glu, Gly and Ala in fish flesh and skin was higher than that in bone and head. Various mineral elements and contents were detected in different parts of Antarctic icefish(P<0.05), rich in Mg and K elements in flesh, rich in Mg, Ca and Mn elements in bone and head, especially Ca element in bone, and rich in Mg, Cu, Zn and Fe elements in skin. The finding provides a data basis for the comprehensive utilization of Antarctic icefish in the future.更多还原