食品科学 ›› 2010, Vol. 31 ›› Issue (13): 184-188.doi: 10.7506/spkx1002-6630-201013042

• 生物工程 • 上一篇    下一篇

杀菌剂抑霉唑人工抗原的合成和鉴定

周映霞1,2,3,张丽杰2,潘家荣2,焦必宁1,3,*,王 磊2   

  1. 1.西南大学食品科学学院
    2.中国农业科学院农产品加工研究所
    3.中国农业科学院柑桔研究所/ 西南大学柑桔研究所
  • 收稿日期:2009-11-16 修回日期:2010-03-26 出版日期:2010-07-01 发布日期:2010-12-29
  • 通讯作者: 焦必宁 E-mail:bljiao@tom.com
  • 基金资助:

    “十一五”国家科技支撑计划项目(2007BAD47B07);国家“863”计划项目(2006AA10Z449);
    国家现代农业(柑橘)技术创新体系项目

Synthesis and Identification of Imazalil Antigen

ZHOU Ying-xia1,2,3,ZHANG Li-jie2,PAN Jia-rong2,JIAO Bi-ning1,3,*,WANG Lei2   

  1. 1. College of Food Science, Southwest University, Chongqing 400716, China;2. Institute of Agro-Food Sciences and Technology,
    Chinese Academy of Agricultural Sciences, Beijing 100193, China.;3. Citrus Research Institute, Chinese Academy of Agricultural
    Sciences/Citrus Research Institute, Southwest University, Chongqing 400712, China
  • Received:2009-11-16 Revised:2010-03-26 Online:2010-07-01 Published:2010-12-29
  • Contact: JIAO Bi-ning E-mail:bljiao@tom.com

摘要:

以咪唑乙醇为原料,与6- 溴己酸乙酯发生取代反应后再经水解反应合成抑霉唑半抗原(6-[1-(2,4- 二氯苯基)-2-(1- 咪唑基)乙氧基]己酸)。产物经薄层层析和1H-NMR 鉴定后,采用活化酯法分别与牛血清蛋白(BSA)和卵清白蛋白(OVA)偶联得到免疫原(HIA-BSA)和包被原(HIA-OVA),紫外光谱分析法计算得其偶联比分别为13:1 和7:1,初步说明人工抗原合成成功。通过免疫动物获得效价为1:64000 的抗体,采用间接竞争ELISA 法测定抗体的IC50 值为1.76μg/mL,从而进一步证明人工抗原合成成功,所得的抗体可用于ELISA 检测试剂盒的研制。

关键词: 抑霉唑, 半抗原, 人工抗原, 合成, 鉴定

Abstract:

In this study, imazalil (6-[1-(2,4-dichloro-phenyl)-2-(1-imidazolyl) ethoxy] hexanoic acid) was synthesized via substitution reaction between imidazole ethanol and 6-bromo-ethyl followed by hydrolysis reaction to provide a hapten. The synthesized product was identified by thin-layer chromatography (TLC) and 1H-NMR. The hapten was conjugated with bovine serum albumin (BSA) and ovalbumin (OVA) to obtain artificial immune antigen and artificial coating antigen, respectively. The coupling molar ratios were calculated to be 13:1 and 7:1 according to UV spectroscopy analysis, which suggests that artificial antigens are both synthesized successfully. The titer of the antibodies secreted by immunized animals was 1:64000 and the IC50 value was 1.76 μg/L determined by indirect ELISA, which further confirms successful synthesis of artificial antigens. The obtained antibodies can be used for the development of ELISA test kit.

Key words: imazalil, hapten, antigen, synthesis, identification

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