3个广东鲂地理种群肌肉营养成分及能量密度比较研究  

Comparative analysis of nutritional composition and energy density of muscle in three geographical populations of Megalobrama terminalis

作　　者：刘亚秋 刘明典[1] 李新辉 李捷 LIU Yaqiu;LIU Mingdian;LI Xinhui;LI Jie(Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Science/Fishery Resources and Environmental Science Experimental Station of the Upper-Middle Reaches of Yangtze River,Ministry of Agriculture and Rural Affairs,Wuhan 430223,China;Pearl River Fisheries Research Institute,Chinese Academy of Fishery Sciences/Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province,Guangzhou 510380,China;College of Fishery,Ministry of Agriculture,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]中国水产科学研究院长江水产研究所/农业农村部长江中上游渔业资源环境科学观测实验站,湖北武汉430223 [2]中国水产科学研究院珠江水产研究所/广东省水产动物免疫技术重点实验室,广东广州510380 [3]华中农业大学水产学院,湖北武汉430070

出　　处：《南方水产科学》2022年第4期163-169,共7页South China Fisheries Science

基　　金：农业农村部长江中上游渔业资源环境科学观测实验站开放课题(0202020017);广州市科技计划性项目(202201010762);广东省基础与应用基础研究项目(2019B1515120064)。

摘　　要：为比较万泉河、漠阳江和西江广东鲂(Megalobrama terminalis)地理种群的肌肉营养成分与能量密度差异,采用常规生化分析方法检测了3个广东鲂种群肌肉中的水分、粗蛋白、粗脂肪、灰分、脂肪酸和氨基酸含量及能量密度。结果表明,西江种群的肌肉粗蛋白质量分数最高[(20.2±0.5)%],万泉河种群肌肉水分质量分数最高[(79.0±0.5)%]。西江种群的肌肉能量密度显著高于万泉河和漠阳江种群。西江种群的肌肉总氨基酸含量(Total amino acids,TAA)和必需氨基酸指数(Essential amino acid index,EAAI)高于万泉河和漠阳江种群。3个广东鲂种群均检测出23种常见脂肪酸,万泉河种群的单不饱和脂肪酸(Monounsaturated fatty acid,MUFA)总量最低,而多不饱和脂肪酸(Polyunsaturated fatty acids,PUFA)含量最高。西江种群的二十二碳六希酸(DHA)含量显著高于万泉河和漠阳江种群。3个广东鲂种群肌肉中矿物元素含量最高的均为钾(K),最低的均为铜(Cu)。西江种群的铁(Fe)和锰(Mn)含量显著高于漠阳江和万泉河种群,而锌(Zn)含量显著低于漠阳江种群。In order to compare the nutritional composition and energy density of Megalobrama terminalis populations in Wangquan River,Moyang River and Xijiang River,we applied the biochemical analysis methods to determine the contents of moisture,crude protein,ash and crude fatty,as well as amino acid and fatty acid composition and energy density of the muscle of three M.terminalis populations.The results indicate that the Xijiang River population had the highest crude protein mass fraction[(20.2±0.5)%],while Wangquan River population had the highest water mass fraction[(79.0±0.5)%].The energy densi-ty of Xijiang River population was significantly higher than that of Wangquan and Moyang River populations(P<0.05).The essential amino acid index(EAAI)of Xijiang River population was higher than that of Wanquan and Moyang River populations.We had detected 23 kinds of common fatty acids in the muscle of three M.terminalis populations.The content of monounsatu-rated fatty acid(MUFA)in the muscle of Wanquan River population was the lowest,while the content of polyunsaturated fatty acids(PUFA)of Wanquan River populatin was the highest.The DHA content in muscle of Xijiang River population was much higher than that of Wanquan and Moyang populations.Potassium(K)and copper(Cu)had the highest and lowest contents among all the mineral elements in the muscle of three M.terminalis populations,respectively.The contents of ferrum(Fe)and manganese(Mn)of Xijiang River population were significantly higher than those of Moyang and Wanquan River populations,but the content of zinc(Zn)of Xijiang River population was much lower than that of Moyang River population.

关 键 词：广东鲂 营养成分 矿质元素 氨基酸 脂肪酸 

分 类 号：Q955[生物学—动物学]