| 摘要: |
| 【目的】分析测定黄金鲈（Perca flavescens）的肌肉营养成分，对其营养价值进行综合评价。【方法】以20尾体质量为（142.29±4.31） g的黄金鲈为检测对象，采用国家标准方法测定其肌肉粗蛋白、粗脂肪、水分、灰分及氨基酸含量。【结果】黄金鲈肌肉中水分含量为779.1 g/kg，粗蛋白质、粗脂肪、粗灰分含量分别为186.2, 12.1和12.6 g/kg。氨基酸总量为84.07%（质量分数，干样，下同），必需氨基酸（EAA）总量为36.66%，占氨基酸总量的 43.62%，其必需氨基酸的构成比例符合联合国粮农组织/世界卫生组织（FAO/WHO）的标准。必需氨基酸指数（EAAI）为62.57，非必需氨基酸（NEAA）总量为42.06%，氨基酸中鲜味氨基酸（DAA）总量为33.14%。鱼肉中富含Ca、Mg、Zn等矿物质元素。【结论】黄金鲈肌肉中蛋白质含量较高，必需氨基酸和鲜味氨基酸含量较丰富，粗脂肪含量较低，是营养价值和经济价值较高的优质鱼类，经常食用有利于人体健康。 |
| 关键词: 黄金鲈 含肉率 营养成分 氨基酸 |
| DOI： |
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| 基金项目:吉林省科技厅发展计划资助项目(20110233) |
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| Evaluation of nutrient components and quality in the muscle of Perca flavescens |
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YANG Hua,WU Li-fang,YANG Huan-huan,et al
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| Abstract: |
| 【Objective】This study aimed to analyze the nutrition components in the muscle of Perca flavescens,and evaluate their nutritional values.【Method】P.flavescens with weight of (142.29±4.31) g were chosen to measure the contents of crude protein,crude fat,moisture,ash and amino acids in the muscle using national standard methods.【Result】The moisture content was 779.1 g/kg,the crude protein content was 186.2 g/kg,the crude fat content was 12.1 g/kg,and the crude ash content was 12.6 g/kg in muscle of P.flavescens.The content of total amino acids was 84.07% (mass fraction,dry sample),and the content of 8 essential amino acids (EAA) was 36.66%,accounting for 43.62% of total amino acids.The proportion of EAA was in line with the United Nations food and agricultural organization (FAO)/World Health Organization (WHO) standard.Content of essential amino acid index (EAAI) was 62.57.Content of non-essential essential amino acid (NEAA) was 42.06% and content of delicious amino acids (DAA) was 33.14%.Ca,Mg,Zn and other essential minerals were rich in the muscle of P.flavescens.【Conclusion】P.flavescens has high protein content,abundant EAA and DAA,and low crude fat content,suggesting high nutritional value and economic value. |
| Key words: Perca flavescens muscle ratio nutritive component amino acid |
