摘要
测定了长江上游特有鱼类黑尾近红的含肉率及其肌肉生化成分和能值。结果表明 :黑尾近红的含肉率为 70 74 % ;其肌肉生化成分 (鲜重百分比 )水分含量为 80 97%、蛋白质 15 92 %、脂肪 1 11%、灰分 1 0 1%、无氮浸出物 0 99%、比能值 4 37kJ/g及E/P 2 7 4 5kJ/g。肌肉生化成分含量与体长变化无明显关系。肌肉中含有 17种氨基酸 ,总量为 6 9 0 7% (干重百分比 ) ;9种人体必需氨基酸总量是 34 81% ,必需氨基酸占氨基酸总量比例为5 0 39% ;四种鲜味氨基酸含量为 2 6 94 % ;必需氨基酸指数 (EAAI)是 6 3 6 4。缬氨酸 ,苏氨酸和异亮氨酸为限制性氨基酸。
Measurements were made on the ratio of flesh in whole body and analysis of the nutritive composition,energy and amino acids of muscle in A nigrocauda which is endemic fish living in the up reach Changiiang River Samples were collected from the Longxi branch at Sichuan Luzhou in China's Mainland during 2001—2002 Longxi branch is a first step tributary of the up reach Changjiang River The ratio of flesh in whole body was measured by using 14 individuals The nutritive composition,energy were analyzed by using 21 groups from 35 individuals The composition of amino acids of muscle was examined by using 10 individuals It was showed that the ratio of flesh to body was 70 74%,the ratio of gill in whole body was only 1 40%;analysis results of the nutritive composition(%,wet)were that:the moisture of muscle was 80 97%,protein 15 92%,fat 1 11%,ash 1 01%,non nitrogen extract 0 99% The content of energy was 4 37kJ/g,E/P was 27 45kJ/g. There was no apparent relationship between changes of body length and the content of the nutritive composition,energy and amino acids in muscle There was no significant different in the content of the nutritive composition,energy and amino acids in muscle from the samples at May and October It was found those 17 common amino acids and 9 essential amino acids for human needs in muscle(no analysis was made for tryptophane) The total content of amino acids was 69 07%(dry);the content of essential amino acids was 34 81%;the percentage of essential amino acids in total amino acids(E/TA)was 50 39%;essential amino acids to no essential amino acids(E/NE)was 1 02;essential amino acids gram to total nitrogen gram(E/TN)was 2 59;except cystine,coefficient variations of content of amino acids were lower than 10%,the content of the difierent amino acids was stable By nutrition evaluation for the amino acids in muscle to human needs,the content of 4 kinds delicious amino acids was 26 94%;according to the amino acids score(AAS),the first limited amino acid was threonine and the second limited amino acid was valine;on the basis of chemical score(CS),the first limited amino acids was valine and second 1imited amino acid was ileucine;the essential amino acids index was 63 64 Comparativing the contents of amino acids in muscle of Ancherythroculter with four species Culter ,it was not obvious that the results were apparent difference
出处
《水生生物学报》
CAS
CSCD
北大核心
2004年第3期240-246,共7页
Acta Hydrobiologica Sinica
基金
国务院三峡工程建设委员会办公室生态环境项目经费资助(合同号 :SX2 0 0 1 0 17)
关键词
黑尾近红鲌
含肉率
肌肉
营养成分
氦基酸
Ancherythroculter nigrocauda Yih et Wu
The ratio of flesh to body
Nutritive composition
Amino acid
Nutrition evaluation
