莱克多巴胺在猪不同可食组织中的残留  

Metabolism of Ractopamine Residues in Edible Pork Tissues after Withdrawal

作　　者：路勇[1,2] 张卫民[2] 黄华[2] 赵雅松[2] 吴颖[3] 汪明[1] 

机构地区：[1]中国农业大学动物医学院,北京100094 [2]北京市食品安全监控中心,北京100041 [3]北京市产品质量监督检验所,北京100013

出　　处：《食品科学》2011年第18期209-213,共5页Food Science

基　　金：北京奥科委;北京市科委"奥运食品中兴奋剂类物质检测;监控技术研究"专项

摘　　要：系统研究莱克多巴胺(RCT)在猪可食组织中的残留代谢规律。对60头健康猪以25mg/kg的剂量混饲给药8d。在停药1、2、3、4、5、6、7、8、9、14、21d和28d分别屠宰3头猪,取猪里脊等可食用组织和尿液利用快速检测前处理试剂盒-超高效液相色谱/串联质谱法测定残留量。结果显示:猪肾脏中残留量最高,停药1d时平均残留量为96.3μg/kg;肝脏其次,停药1d时平均残留量为67.7μg/kg;猪后臀尖肉再次,停药1d时平均残留量为15μg/kg;猪里脊肉中残留量最少,停药1d时平均残留量仅为8.9μg/kg。肾脏、肝脏和猪里脊肉中RCT均在停药9d后降至检测限以下,而后臀尖肉中RCT在停药7d后降至检测限以下。The distribution and elimination of ractopamine residues in edible pork tissues were investigated.At a dosage of 26 mg/ kg,ractopamine was added to the feed for 60 healthy pigs.Three pigs were slaughtered at 1,2,3,4,5,6,7,8,9,14,21 and 28 d after withdrawal,respectively,and edible tissues and urine were collected to determine ractopamine residues in them by rapid pretreatment kits and ultra performance liquid chromatography coupled with tandem mass spectrometry（UPLC/MS-MS）.Ractopamine showed an average residue of 96.3,67.7,15μg/kg and 8.9μg/kg in kidney,liver,rump and tenderloin at 1 day after withdrawal,respectively.The ractopamine residues in kidney,liver and tenderloin decreased to less than the detection limit on the 9th day compared to the 7th day observed for rump.

关 键 词：莱克多巴胺(RCT) 猪可食组织 残留代谢规律 

分 类 号：S859.84[农业科学—临床兽医学]