中国畜牧兽医 ›› 2019, Vol. 46 ›› Issue (9): 2753-2759.doi: 10.16431/j.cnki.1671-7236.2019.09.031

• 基础兽医 • 上一篇    下一篇

加速溶剂萃取/超高效液相色谱-荧光法检测猪肉中氟苯尼考和氟苯尼考胺残留

刁志祥1,2, 张培杨1,2, 王旭堂1,2, 谢恺舟1,2, 王波2,3, 赵霞1,2, 郭亚文1,2, 张跟喜1,2, 张涛1,2, 戴国俊1,2, 刘学忠2,3   

  1. 1. 扬州大学动物科学与技术学院, 扬州 225009;
    2. 教育部农业与农产品安全国际合作联合实验室, 扬州 225009;
    3. 扬州大学兽医学院, 扬州 225009
  • 收稿日期:2019-04-02 出版日期:2019-09-20 发布日期:2019-09-21
  • 通讯作者: 谢恺舟 E-mail:yzxkz168@163.com
  • 作者简介:刁志祥(1996-),男,江苏泰州人,硕士,研究方向:畜产品品质与安全,E-mail:1178257857@qq.com
  • 基金资助:
    国家现代农业产业技术体系项目(CARS-41-G23);扬州大学"高端人才支持计划"项目(201801);江苏省农业科技自主创新基金项目(CX(18)3022)

Determination of Florfenicol and Florfenicol Amine Residues in Pork by Accelerated Solvent Extraction/Ultra-high Performance Liquid Chromatography-fluorescence

DIAO Zhixiang1,2, ZHANG Peiyang1,2, WANG Xutang1,2, XIE Kaizhou1,2, WANG Bo2,3, ZHAO Xia1,2, GUO Yawen1,2, ZHANG Genxi1,2, ZHANG Tao1,2, DAI Guojun1,2, LIU Xuezhong2,3   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225009, China;
    3. College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
  • Received:2019-04-02 Online:2019-09-20 Published:2019-09-21

摘要: 为给动物源性食品中同时检测氟苯尼考(FF)及其主要代谢产物氟苯尼考胺(FFA)的残留提供新的安全可靠的方法,本研究建立了猪肉中FF及FFA残留检测的加速溶剂萃取/超高效液相色谱-荧光检测(ASE/UPLC-FLD)法。试验采用乙酸乙酯:氨水(98:2,V/V)为提取剂,样品经加速溶剂萃取后浓缩,用乙酸乙酯饱和正己烷除脂,再经浓缩复溶后进行UPLC-FLD检测。结果表明,FF及其代谢产物FFA在添加浓度为9.8~400和3.2~400 μg/kg的范围内线性关系良好,相关系数(R2)分别为0.9993和0.9999。FF的检测限(LOD)和定量限(LOQ)分别为3.3和9.8 μg/kg;FFA的LOD和LOQ分别为1.2和3.2 μg/kg。样品在LOQ、0.5 MRL、1.0 MRL和2.0 MRL加标水平下的平均回收率为82.92%~96.72%,相对标准偏差(RSD)低于3.11%。综上所述,加速溶剂萃取(ASE)方法省时、环保、提取效率高,超高效液相色谱-荧光检测(UPLC-FLD)检测方法高效、灵敏、回收率高,是符合检测标准的新方法。

关键词: 猪肉; 氟苯尼考(FF); 氟苯尼考胺(FFA); 残留; 加速溶剂萃取(ASE); 超高效液相色谱-荧光检测(UPLC-FLD)

Abstract: In order to provide a new safe and reliable method for simultaneous detection of florfenicol (FF) and its metabolite florfenicol amine (FFA) residues in animal-derived foods,this study established an accelerated solvent extraction/ultra-high performance liquid chromatography-fluorescence detector (ASE/UPLC-FLD) method for the determination of FF and FFA in pork.Samples were concentrated after accelerated solvent extraction,fat was removed by n-hexane saturated with ethylacetate,then concentrated and re-dissolved before analysis in UPLC-FLD system.The results showed that FF and its metabolite FFA had a good linear relationship in the range of 9.8 to 400 and 3.2 to 400 μg/kg,respectively,and the coefficient of determination (R2) were 0.9993 and 0.9999,respectively.The limit of detection (LOD) and the limit of quantification (LOQ) of FF were 3.3 and 9.8 μg/kg,for FFA were 1.2 and 3.2 μg/kg,respectively.The average recoveries of the samples at LOQ,0.5MRL,1.0MRL and 2.0MRL spiked levels ranged from 82.92% to 96.72%,and the relative standard deviations were below 3.11%.In summary,the ASE extraction method had many advantages such as high extraction efficiency,time saving,environmental protection and so on.The UPLC-FLD method had high efficiency,sensitivity and recovery,and it provided a new method for simultaneous determination of FF and FFA residues in animal-derived food and it was a new method fitting on meets testing standards.

Key words: pork; FF; FFA; residue; ASE; UPLC-FLD

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