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食品中四环素类残留的酶联免疫检测试剂盒的研制.pdf

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※技术应用 食品科学 2011, Vol. 32, No. 02 333 食品中四环素类残留的酶联免疫检测 试剂盒的研制 1 2 1 1 1 , 2 国占宝 ,武玉香 ,田文礼 ,赵亚周 ,彭文君 * ,柳家鹏 ( 1.中国农业科学院蜜蜂研究所,农业部授粉昆虫生物学重点开放实验室,国家蜂产品加工技术研发分中心,北京 100093 ;2 .北京华安麦科生物技术有限公司,北京 102200) 摘 要:目的:基于定量检测动物源性食品中四环素类抗生素的残留量,开发研制四环素类抗生素竞争酶联免疫 (ELI SA)检测试剂盒。方法:采用杂交瘤技术,筛选并克隆稳定分泌抗四环素(CEL) 的杂交瘤细胞株,利用免疫 BALB/c 小白鼠制备抗四环素单克隆抗体。结果:logit/log 拟合标准曲线为y = -2 .3x +2 .79 ,相关系数r=0.997 1, 线性检测范围为0.05~4.05ng/mL ,半数抑制剂量(IC50)为0.293ng/mL ,灵敏度为0.05ng/mL ,检测限为3~5ng/mL; 组织、牛奶、蜂蜜的添加回收率分别为(90 ±10)% 、(85 ±10)% 、(90 ±10)% ;平均批内和批间变异系数均小于 15%;四环素与金霉素等同类抗生素的交叉反应率大于60% ,与其他类抗生素无交叉反应;此试剂盒在4 ℃可保存 180d 以上。结论:建立的试剂盒是符合技术指标的要求,可用于动物源性食品中四环素类抗生素残留的定量检测。 关键词:食品;四环素;单克隆抗体;竞争酶联免疫 Development of A New ELISA Kit for Tetracycline Residue Detection in Foods 1 2 1 1 1, 2 GUO Zhan-b ao ,WU Yu-xiang ,TIAN Wen-li ,ZHAO Ya-zh ou ,PENG Wen-j un * ,LIU Jia-peng (1. Institute of Apiculture Research, Chinese Academy of Agricultural Sciences, Key Laboratory for Pollinating In sect Biology , Ministry of Agriculture, National Research and Development Center For Bee Product Processing, Beij ing 100093, China; 2. Huaan Magnech Bio-tech Co. Ltd., Beij ing 102200, China) Abstract :A competitive ELISA kit for tetracycline (TC) residues detection was developed by employing TC monoclonal antibody prepared by hybridoma technology using anti-TC monoclonal antibodies secreted by immunized BALB/c mouse. Performance tests showed that the logit/log calibration curve of the kit was y = -2.3x + 2.79 (correlation coeffici
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