食品科学 ›› 2010, Vol. 31 ›› Issue (8): 167-170.doi: 10.7506/spkx1002-6300-201008036

• 分析检测 • 上一篇    下一篇

纳米生物传感器在氯霉素检测中的应用

武会娟1,魏 玲1,刘清珺1 ,* ,乐加昌2,李宝明1,张小莉1,高丽娟1,亢子佳1,赵 龙1,钱嘉林1   

  1. 1.北京市理化分析测试中心 2.中国科学院生物物理研究所
  • 收稿日期:2009-04-16 出版日期:2010-04-15 发布日期:2010-12-29
  • 通讯作者: 刘清珺 E-mail:Liuqj@bjast.ac.cn
  • 基金资助:

    科技部创新方法工作专项(2008IM021600);北京市科学技术研究院创新团队支持项目(IG200905N)

Application of Nano-biosensor to Chloramphenicol Detection

WU Hui-juan1,WEI Ling1,LIU Qing-jun1,*,YUE Jia-chang2,LI Bao-ming1,ZHANG Xiao-li1,GAO Li-juan1,KANG Zi-jia1,ZHAO Long1,QIAN Jia-lin1   

  1. 1. Beijing Centre for Physical and Chemical Analysis, Beijing 100094, China;
    2. Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2009-04-16 Online:2010-04-15 Published:2010-12-29
  • Contact: LIU Qing-jun1 E-mail:Liuqj@bjast.ac.cn

摘要:

利用pH 敏感的荧光指示剂F1300 可以量化ATP 合酶活性的特点,构建生物传感器,开发灵敏、特异、快速的氯霉素残留检测方法。将pH 变化敏感荧光物质F1300 标记到色素体(chromatophore)的内表面,然后,将β亚基抗体- 生物素- 链亲和素- 生物素- 氯霉素抗体系统连接到色素体上F0F1-ATPase 的β亚基上,该检测体系能与氯霉素相连接。采用微弱发光检测仪检测荧光值,根据荧光值确定氯霉素浓度。样品中氯霉素浓度越高表现出的总荧光值越低,反之亦然。该方法的检测限为1 × 10 - 11mg/mL,且检测操作仅需35min,能快速、高灵敏地检测氯霉素,具有很好的应用前景。

关键词: 纳米生物传感器, 氯霉素, 检测

Abstract:

Chloramphenicol is a broad-spectrum antibiotic and its use is prohibited in many countries in the world due to its toxicity and side effects. The detection of chloramphenicol residue in food products has become a critical technical barrier. F1300, a fluorescence indicator, makes it easy to quantify the activity of F0F1-ATPase. Based on this, a complex of chloramphenicol antibody-biotin-streptavidin-biotin- β subunit antibody was constructed and connected to β subunits of F0F1-ATPase in the chromatophore. The concentration of chloramphenicol was measured according to the relative fluoresent value of F0F1-ATPase biosensor tagged by F1300. The detection limit of this method was 1 × 10-11 mg/mL. Only 35 min was needed for the whole detection process. Therefore, this method, thanks to its rapidity, simplicity and high sensitivity, will has a promising application to chloramphenicol detection.

Key words: nano-biosensor, chloramphenicol, detection

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