摘要
采用国标(GB)的检测方法,对生长过程中池塘养殖胭脂鱼幼鱼鱼体与蛋白营养变化进行了研究。结果表明:鱼体组成中,29月龄幼鱼的粗蛋白含量最高,与5月龄无显著差异(p>0.05),17月龄最低;粗脂肪和灰分含量分别是17、29月龄幼鱼含量最高,29、17月龄最低。肌肉百分含量和肌肉中粗蛋白、粗脂肪以及灰分含量随着月龄的增加而显著降低,而水分含量却随着月龄的增加而显著升高。肌肉氨基酸总量中,29月龄的最高,17月龄的最低。41月龄幼鱼肌肉中必需氨基酸含量最高,且与29月龄无显著性差异(p>0.05)。各龄幼鱼均是Glu含量最高,其次是Asp,含量最低的为Cys。17、29、41月龄幼鱼的第一限制性氨基酸分别为Leu、Thr、Thr和Val,必需氨基酸指数分别为55.38、68.19和69.04。综合各项指标,29月龄幼鱼蛋白营养高于17月龄和41月龄的。
Variations of body composition and nutritive components of muscle between young farmed Chinese sucker, Myxocyprinus asiaticus was analyzed with GB methods.The result showed that the 29 months young M.asiaticus＇s content of crude protein was the highest in the body between different ages, which had no significant difference with 5 months（p 〉0.05） ,while the 17 months was the lowest.Contrary to the ash,the highest content of crude fat was 17 months fish,while the lowest was 29 months.The content of muscle, crude protein, crude fat and crude ash in the muscles gradually became lower and lower from 17 months to 41 months.The total of amino acid in muscle of 29 months young M.asiaticus was highest,while the lowest in t？ months without significant d ifference（p 〉 0.05）to 29 months,the 41 months young fish has highest content of essential amino acids.Glu was the highest among different ages, Cys was the lowest.According to nutrition evaluation in amino acids score（AAS） and chemical score（CS） ,the first limited amino acid and essential amino acid index（EAAI） from 17 to 41 months young fish was Leu,Thr,Thr and Val and 55.38,68.19,69.04, respectively. In conclusion, the study results indicated that the value of the muscle of 29 months M.asiaticus higher than 17 months and 4tmonths.
出处
《食品工业科技》
CAS
CSCD
北大核心
2013年第11期338-343,共6页
Science and Technology of Food Industry
基金
农业部公益性行业科研专项(201203086-11)
