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计融, 柳桢, 江涛, 郑佳, 李敏. 总黄曲霉毒素ELISA定量检测试剂盒研制[J]. 中国公共卫生, 2007, 23(3): 331-333. DOI: 10.11847/zgggws2007-23-03-40
引用本文: 计融, 柳桢, 江涛, 郑佳, 李敏. 总黄曲霉毒素ELISA定量检测试剂盒研制[J]. 中国公共卫生, 2007, 23(3): 331-333. DOI: 10.11847/zgggws2007-23-03-40
JI Rong, LIU Zhen, JING Tao, . Development of ELISA-kit of quantitative analysis for Aflatoxins[J]. Chinese Journal of Public Health, 2007, 23(3): 331-333. DOI: 10.11847/zgggws2007-23-03-40
Citation: JI Rong, LIU Zhen, JING Tao, . Development of ELISA-kit of quantitative analysis for Aflatoxins[J]. Chinese Journal of Public Health, 2007, 23(3): 331-333. DOI: 10.11847/zgggws2007-23-03-40

总黄曲霉毒素ELISA定量检测试剂盒研制

Development of ELISA-kit of quantitative analysis for Aflatoxins

  • 摘要: 目的 研究并建立敏感、特异和快速的针对食品中总黄曲霉毒素的ELISA检测方法,形成具有我国自主知识产权的快速定量检测试剂盒.方法 在生产抗总黄曲霉毒素单克隆抗体基础上,利用间接竞争ELISA方法,研制出食品中总黄曲霉毒素快速检测试剂盒,并对试剂盒的各项技术参数进行测定.结果 该试剂盒对黄曲霉毒素B+G标准品的最低检出浓度为0.26 ng/ml,标准曲线的线性范围为0.26-20.00 ng/ml,线性方程y=-0.4463x+0.3532(R2=0.9915);对黄曲霉毒素B+G50%的抑制浓度为2.08 ng/ml;试剂盒的条内变异系数为4.18%,条间变异系数为5.21%,抗体亲和力常数为1.52×10-10mol/L;对玉米3个加标水平的平均回收率分别为98.63%,94.56%和1 12.05%;对花生的3个加标水平的平均回收率分别为88.66%,87.50%和85.60%.试剂盒37℃可放置96 h以上;试剂盒对黄曲霉毒素B1、B2、G1、G2的交叉反应率分别为100%,57.5%,104%和19%,与其他真菌毒素无交叉反应.结论 研制出的ELIS试剂盒能定量检测食品中总黄曲霉毒素.

     

    Abstract: Objective To develop a sensitive,specific and rapid enzyme-linked immunosorbent assay for detection of total aflatoxins.To develop rapid detection EL ISA-kit that possessing country patent.Methods A rapid,quantitative EL ISA-based method(EL ISA-kit)were developed on the base of monoclonal antibodies against Aflatoxins.Results For Aflatoxin(B+G),the limited concentration of detection of the EL ISA-kit was 0.26 ng/ml,linear range was 0.26~20.00 ng/ml,the linear equation was y=-0.4463x+0.3532(R2=0.9915).The inhibition concentration of 50% for Aflatoxin(B+G)was 2.08 ng/ml.The coefficients of variation was 4.18% within the strips,and 5.21% among the level of 0.30μg/kg,2.10μg/kg and 10.40% was 98.63%,94.56% and 112.05% respectively.For peanut recovery rate on the level of 0.50μg/kg,2.00μg/kg and 4.00μg/kg was 88.66%,87.50% and 85.60% respectively,The kit could be stored at 37℃ over 96 hours.The cross reaction rate with aflatoxin B1,B2,G1,G2 was 100% 57.5%,104%,19% respectively,and no cross reaction with other mycotoxins.Conclusion The EL ISA-Kit for total aflatoxins is developed.

     

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