食品科学 ›› 2008, Vol. 29 ›› Issue (1): 270-272.

• 分析检测 • 上一篇    下一篇

固相萃取-反相高效液相色谱测定牛奶中米诺环素残留量的研究

 乐涛, 佘永新, 柳江英, 毕丁仁   

  1. 华中农业大学动物医学院; 西藏自治区农牧科学院兽医畜牧研究所; 西藏自治区司法中心医院; 华中农业大学动物医学院 湖北武汉430011信阳农业高等专科学校动物科学系; 河南信阳464000; 西藏拉萨850009; 西藏拉萨850000; 湖北武汉430011;
  • 出版日期:2008-01-15 发布日期:2011-07-28

Application of SRP-HPLC with Gradient Elution for Rapid Determination of Minocycline Residues in Milk

 LE  Tao, SHE  Yong-Xin, LIU  Jiang-Ying, BI  Ding-Ren   

  1. 1.College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430011, China; 2.Department of Animal Sciences, Xinyang Agricultural College, Xinyang 464000, China; 3.Institute of Veterinary and Animal Husbandry, Tibet Academy of Agricultural and Animal Husbandry, Lhasa 850009, China;4.Tibet Central Hospital for Judicial, Lhasa 850000, China
  • Online:2008-01-15 Published:2011-07-28

摘要: 建立快速检测牛奶中米诺环素药物残留的反相高效液相色谱法。用0.1mol/L McIlvaine-EDTA溶液和50%三氯乙酸(TCA)溶液共同处理牛奶样品,采用Waters Oasis HLB固相萃取柱进行净化处理。色谱柱为SunfireTM C18(250mm×4.6mm,5μm)柱,以甲醇-乙腈-0.01mol/L草酸(pH2)为流动相,筛选最佳的梯度洗脱模式。米诺环素其线性范围宽,峰面积和样品浓度在20~100μg/kg呈很好的线性关系,加标平均回收率在99%,最低检测限为0.02μg/ml。该方法操作简单、重现性好、检测限低、灵敏可靠,可适用于牛奶基质中米诺环素残留量检测和相关药动学研究。

关键词: 反相高效液相色谱(RP-HPLC), 米诺环素, 梯度洗脱, 固相萃取

Abstract:  To quickly establish reverse phase high-performance liquid chromatography (RP-HPLC) method to determine residues of Minocycline in the milk, the gradient elution method was developed. Minocycline was separated on a sunfire C18 column (250mm×4.6mm, 5μm i.d.) with methanol-acetonitrile-0.01mol/L oxalic acid at the flow rate of 1.0 ml/min and detecting at the 355 nm within 8 min. The results showed that the method under the gradient elution is more sensitive and quicker with lower detection limit than that of the isocratic elution. The detection limit is 20μg/kg for Minocycline. The standard curve is obtained in the concentration range of 0.02~1.0μg/ml with the average recovery 99%. The lowest detection limit is 0.02μg/ml. The method established is simple, special, sensitive and reliable. It can be used to detect the residue of Minocycline and the pharmacokinctic parameters of Minocycline in milk.

Key words: RP-HPLC, Minocycline, gradient elution, solid phase extraction