当前位置: 首页 > 文章 > 不同载体酶联免疫技术检测牛乳中磺胺类药物的残留 中国奶牛 2012 (15) 32-36
Position: Home > Articles > Development of ELISA Formats Using Different Carriers for Sulfonamides Detection in Milk China Dairy Cattle 2012 (15) 32-36

不同载体酶联免疫技术检测牛乳中磺胺类药物的残留

作  者:
曹亢;姜鹭;任发政
单  位:
教育部功能乳品重点实验室;中国农业大学食品科学与营养工程学院
关键词:
磺胺类药物;ELISA;金磁微粒;药物残留
摘  要:
本试验以抗磺胺类药物单克隆抗体为基础,分别建立了以酶标板和金磁微粒为载体的间接竞争酶联免疫吸附测定法,用以检测全脂牛乳中磺胺类药物残留。结果表明,两种方法的检测限均低于0.5ng/mL,对磺胺噻唑、磺胺甲恶唑和磺胺氯哒嗪的交叉率高,与其他抗生素未发现交叉反应;两种方法受全脂牛乳基质的干扰均较小,磺胺噻唑加标回收率为87.0%~95.8%,变异系数为3.9%~9.0%。与传统酶标板相比,金磁微粒提高了牛乳中磺胺类药物检测的灵敏度和精密度,缩短了检测时间。
译  名:
Development of ELISA Formats Using Different Carriers for Sulfonamides Detection in Milk
作  者:
CAO Kang,JIANG Lu,REN Fa-zheng(College of Food Science and Nutritional Engineering,China Agricultural University,Beijing 100192)
关键词:
Sulfonamides;ELISA;Gold magnetic nanoparticles;Residues
摘  要:
For detection of Sulfonamide residues in full-cream milk samples,two indirect competitive enzymelinked immunosorbent assays(CiELISA) have been developed on the base of prepared anti-sulfonamide groupspecific monoclonal antibody,which using microtiter plates(MP) and gold magnetic nanoparticles(GMNP) as the carrier respectively.The results show that the detection limits of the two CiELISAs were both lower than 0.5 ng/mL.For two formats,sulfathiazole,sulfamethoxazole and sulfachlorpyridazine had high cross-reactivity rate and other common non-sulfonamide antibiotics had no cross-reactivity.Both formats were subject to less interference from full-cream milk matrix.The recovery values for sulfathiazole in full-cream milk samples spiked ranged from 87.0% to 95.8% and coefficient of variation ranged from 3.9% to 9.0%.The use of GMNP have improved the detection sensitivity,accuracy,precision and reduced the detection time compared with traditional microtiter plates.

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