摘要
自资江湖南邵阳段采捕体质量500~700 g的野生中华鳖Trionyx sinensis 3只,自湖南省水产原种场取养殖的体质量400~600 g中华鳖3只,测定其肌肉、肝脏、脂肪块和背甲中Cu、Zn、Cd、Pb的含量,比较野生与养殖中华鳖体内重金属的富集特征及食用安全性。结果表明:(1)养殖中华鳖各组织对Cu的蓄积表现为肝脏>肌肉>背甲>脂肪块,对Zn的蓄积表现为背甲>肝脏>肌肉>脂肪块,对Cd的蓄积表现为肌肉>肝脏>背甲>脂肪块,对Pb的蓄积表现为背甲>肝脏>脂肪块>肌肉;野生中华鳖各组织对Cu和Zn的蓄积规律与养殖中华鳖相同,对Cd的蓄积表现为肝脏>背甲>脂肪块>肌肉,对Pb的蓄积表现为背甲>脂肪块>肝脏>肌肉;(2)均值污染指数(PI)由大到小排序为背甲(野生)>肝脏(野生)>背甲(养殖)>肝脏(养殖)>肌肉(养殖)>肌肉(野生)>脂肪块(野生)>脂肪块(养殖)。综上,资江湖南邵阳段野生中华鳖与养殖中华鳖的肌肉及脂肪中Cu、Zn、Cd和Pb含量均远低于国家限量标准,食品安全性好。
The contents of Cu,Zn,Cd,and Pb were determined in muscle,liver,fat mass,and shell of wild soft-shell turtle(Trionyx sinensis)with body weights of 500~700 g sampled from the Shaoyang section of Hunan provinces in Zi River and cultured soft-shell turtle with body weight of 400~600 g collected from Aquatic Products Seed Stock Station in Hunan Province in order to investigate the accumulative characteristics and food safety of heavy metals in wild and cultured soft-shell turtle.The results showed that in the cultured soft-shell turtle the accumulation of Cu was characterized by liver>muscle>shell>fat;the accumulation of Zn was expressed as shell>liver>muscle>fat;the accumulation of Cd was expressed as muscle>liver>shell>fat.The accumulation of Pb was expressed as shell>liver>fat>muscle.The accumulation characteristics of Cu and Zn in the wild soft-shell turtle was as the same as that in the cultured.The accumulation of Cd in the wild soft-shell turtle was expressed as liver>shell>fat>muscle;the wild soft-shell turtle had accumulation of Pb as shell>fat>liver>muscle.The comprehensive pollution index(PI)of different tissues in wild and cultured soft-shell turtle were ranked as shell(wild)>liver(wild)>shell(cultured)>liver(cultured)>muscle(cultured)>muscle(wild)>fat(wild)>fat(cultured).In summary,the muscle and fat of wild and cultured soft-shell turtle have no potential risk for consumers due to the far lower contents of Cu,Zn,Cd and Pb than the Chinese national food safety standards.
作者
程小飞
袁希平
向劲
李传武
吴浩
田兴
李鸿
宋锐
CHENG Xiaofei;YUAN Xiping;XIANG Jin;LI Chuanwu;WU Hao;TIAN Xing;LI Hong;SONG Rui(Hunan Fisheries Science Institute,Changsha 410153,China;Aquatic Products Seed Stock Station in Hunan Province,Changsha 410153,China)
出处
《水产学杂志》
CAS
北大核心
2021年第2期51-55,共5页
Chinese Journal of Fisheries
基金
湖南省科技重大专项(2017NK1030)
现代农业产业技术体系专项(CARS-45-47).
关键词
中华鳖
重金属元素
富集特征
养殖
野生
安全性评价
Trionyx sinensis
heavy metal element
enrichment characteristics
cultured
wild
safety evaluation
