食品科学 ›› 2017, Vol. 38 ›› Issue (2): 296-300.doi: 10.7506/spkx1002-6630-201702046

• 安全检测 • 上一篇    下一篇

基于多克隆抗体包被磁性纳米粒子的ELISA法检测西维因

张 灿,崔涵雨,韩玉凤,王现平,何 铭,陈 波,刘 源   

  1. 1.江苏大学食品与生物工程学院,江苏 镇江 212013;2.镇江药品检验所,江苏 镇江 212000
  • 出版日期:2017-01-25 发布日期:2017-01-16
  • 基金资助:
    国家自然科学基金青年科学基金项目(31000783);镇江市科技支撑项目(SH2014019);江苏大学2016年大学生实践创新项目(136)

Development of Immunoagnetic Bead-Based ELISA for the Detection of Carbaryl

ZHANG Can, CUI Hanyu, HAN Yufeng, WANG Xianping, HE Ming, CHEN Bo, LIU Yuan   

  1. 1. School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China; 2. Zhenjiang Institute for Drug Control, Zhenjiang 212000, China
  • Online:2017-01-25 Published:2017-01-16

摘要: 建立一种基于抗体包被氨基化Fe3O4磁性纳米粒子,建立免疫磁珠酶联免疫吸附测定(enzyme-linkedimmunosorbent assay,ELISA)法用于检测氨基甲酸酯农药西维因。结果表明:在最佳条件下,西维因质量浓度在1×10-3~10 mg/L范围内,建立的免疫磁珠ELISA法具有较好的线性关系(y=8.87lnx+72.77,R2=0.994),抑制率最高可达90.6%;测得的半抑制浓度(half maximal inhibitory concentration,IC50)为0.077 mg/L,检出限(IC15)为1.48×10-3 mg/L。以质量浓度1 mg/L的西维因在相同条件下重复检测3 次,相对标准偏差为1.67%。以大米和卷心菜为实际样品进行西维因加标回收率实验,通过免疫磁珠ELISA法测得的回收率为70.5%~123.1%,同时采用高效液相色谱法进行相关性验证,结果表明,2 种方法检测结果的相关性较好(R2=0.91)。通过一系列分析表明,所建立的抗体包被磁性纳米粒子ELISA法可用于快速检测西维因。

关键词: 西维因, 免疫磁珠, 酶标记免疫分析, 检测, 相关性

Abstract: This paper develops an immunomagnetic bead-based enzyme-linked immunosorbent assay (ELISA) for the detection of carbaryl. Under optimum conditions, the method exhibited a good linear relationship in the range of 1 × 10-3-10 mg/L, with a correlation coefficient (R2) of 0.994. The maximum inhibition rate reached 90.6%, and the halfmaximum inhibitory concentration (IC50) was 0.077 mg/L. The detection limit (LOD) of this method was 1.48 × 10-3 mg/L. The precision for three replicate detections of carbaryl (1 mg/L) was 1.67% (relative standard deviation, RSD). The recovery of rice and Chinese cabbage spiked with carbaryl was between 70.5% and 123.1%. Also, it was found that the detection results were highly correlated with those obtained by high performance liquid chromatography (R2 = 0.91). In conclusion, the immunomagnetic bead-based ELISA can be used for rapid detection of carbaryl.

Key words: carbaryl, immunomagnetic beads, enzyme-linked immunosorbent assay (ELISA), detection, correlation

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