长脂拟鲿含肉率及肉质营养评价  

Flesh rate and muscle nutritional composition in Pseudobagrus adiposalis

作　　者：尹邦一[1] 代应贵[1] 董坡[1] 

机构地区：[1]贵州大学动物科学学院,贵阳550025

出　　处：《淡水渔业》2014年第3期85-89,共5页Freshwater Fisheries

基　　金：国家自然科学基金项目(30960297);贵州省留学人员科技活动项目[黔人项目资助合同(2013)10]

摘　　要：采用常规方法测定了长脂拟鲿(Pseudobagrus adiposalis)的含肉率及肌肉营养成分,并对其肉质营养进行了分析和评价。结果表明:长脂拟鲿平均含肉率为53.99%。肌肉鲜样中蛋白质含量较高,达18.58%;脂肪含量较低,为0.62%。肌肉干样中17种氨基酸(色氨酸未测定)的含量为85.81%。其中必需氨基酸含量为39.41%,占氨基酸总量的45.96%,并以亮氨酸、赖氨酸含量最高。必需氮基酸指数较高,达75.23。4种鲜味氨基酸含量高达33.92%,并占氨基酸总量的39.52%。第一限制氨基酸为苯丙氨酸+酪氨酸,第二限制氨基酸为甲硫氨酸+半胱氨酸和缬氨酸。The flesh rate and nutritional components of muscle in Pseudobagrus adiposalis were determined and evaluated by the routine methods. The results showed that the flesh ratio of P. adiposalis averaged 53. 99%. The contents of protein and lipid were 18. 58% and 0. 62% respectively in the fresh muscle of the species. A total of 17 common amino acids（ except for tryptophan） were determined,and the total content of the 17 amino acids was 85. 81% in the dry muscle. The total content of 9 essential amino acids was 39. 41% and made up 45. 96% of that of the 17 amino acids. And leucine and lysine had much higher contents than the other essential amino acids. The essential amino acid index（ EAAI） was 75. 23. The total content of 4 delicious amino acids was 33. 92% and accounted for 39. 52% of that of the 17 amino acids in the species. The first limited amino acid of the species was phenylalanine ＋ tyrosine and the second one was methionine ＋ cysteine and valine.

关 键 词：长脂拟鲿(Pseudobagrus adiposalis) 含肉率 蛋白质 氨基酸 营养评价 

分 类 号：TS201.4[轻工技术与工程—食品科学] S965.199[轻工技术与工程—食品科学与工程]