1.广东省食品质量安全重点实验室,华南农业大学 食品学院,广东 广州 510642
2.广州市食品检验所, 广东 广州 510410
3.深圳市易瑞生物技术股份有限公司,广东 深圳 518000
徐振林,博士,教授,研究方向:食品安全检测与控制,E-mail:jallent@163.com
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韩金治,李亚茹,罗林等.胶体金免疫层析法快速检测水产品中河豚毒素的研究[J].分析测试学报,2023,42(12):1598-1606.
HAN Jin-zhi,LI Ya-ru,LUO Lin,et al.Rapid Detection of Tetrodotoxin in Aquatic Products by Colloidal Gold Immunochromatography Assay[J].Journal of Instrumental Analysis,2023,42(12):1598-1606.
韩金治,李亚茹,罗林等.胶体金免疫层析法快速检测水产品中河豚毒素的研究[J].分析测试学报,2023,42(12):1598-1606. DOI: 10.19969/j.fxcsxb.23062703.
HAN Jin-zhi,LI Ya-ru,LUO Lin,et al.Rapid Detection of Tetrodotoxin in Aquatic Products by Colloidal Gold Immunochromatography Assay[J].Journal of Instrumental Analysis,2023,42(12):1598-1606. DOI: 10.19969/j.fxcsxb.23062703.
该文将特异性识别河豚毒素的单克隆抗体加以胶体金标记用作示踪物,建立了豚毒素的胶体金免疫层析技术快速检测方法。优化了胶体金体系的pH值、抗原抗体浓度、离子浓度、表面活性剂种类以及样品前处理方法。结果显示:在最优条件下,建立的胶体金免疫层析法对河豚毒素的定量检出限为0.5 ng/mL,线性范围为0.8~10.6 ng/mL,定性检出限(裸眼判别)为12.0 ng/mL。河豚、织纹螺等样品的加标回收率为70.5%~110%,相对标准偏差为3.7%~7.1%,检测结果与LC-MS/MS法一致。所建立的胶体金免疫层析技术在现场快速检测方面具有良好的可行性和实用性,可用于大量样品的快速筛查和河豚毒素中毒后的快速诊断。
The aim of this paper is to establish a rapid detection method for tetrodotoxin by colloidal gold immunochromatography assay(GICA). Monoclonal antibody specific for tetrodotoxin was labelled with colloidal gold as tracers. The effects of pH,antigen and antibody concentration,ion concentration,surfactant type and sample pretreatment on the performance of GICA were carefully investigated. The results showed that under the optimal conditions,the quantitative detection limit of the proposed assay for tetrodotoxin was 0.5 ng/mL,the linear range was 0.8-10.6 ng/mL,and the qualitative detection limit was 12.0 ng/mL. The spiked recoveries for tetrodotoxin in pufferfish、nassariidae samples ranged from 70.5%-110% with relative standard deviations of 3.7%-7.1%,and the results were similar to those of the LC-MS/MS method. Compared with the traditional analytical techniques,the proposed GICA showed better feasibility,practicality and superiority for rapid detection in the field.
河豚毒素单克隆抗体胶体金免疫层析快速检测水产品
tetrodotoxinmonoclonal antibodycolloidal gold immunochromatography assayrapid detectionaquatic products
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