Rabbit Monoclonal Antibody-Based Lateral Flow Immunoassay Platform for Sensitive Quantitation of Four Sulfonamide Residues in Milk and Swine Urine
文献类型: 外文期刊
第一作者: Liu, Na
作者: Liu, Na;Shen, Jiner;Zheng, Xiaodong;Nie, Dongxia;Han, Zheng;Yang, Xianli;Zhao, Zhiyong;Liu, Gang;Wu, Aibo
作者机构:
关键词: Lateral flow immunoassay;Quantitation;Rabbit monoclonal antibody;Sulfonamides
期刊名称:ANALYTICAL LETTERS ( 影响因子:2.329; 五年影响因子:1.738 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Based on the available rabbit monoclonal antibody (RabMAb), a rapid and sensitive lateral flow immunoassay (LFA) platform has been developed for quantitative detection of four sulfonamide residues(SRs) of sulfadiazine (SD), sulfathiazole (STZ), sulfapyridine (SP), and sulfamethoxazole (SMX).Within the designed LFA competitive format assay, which was based on antigen-antibody properties, the hapten conjugate N~1-[4-(carboxymethyl)-2-thiazolyl] sulfanilamide linked to protein ovalbumin (TS-OVA) and goat anti-rabbit antibody were sprayed as capture and control reagents, respectively, and then the antibody was conjugated to colloidal gold particles as the detection reagent. With quantitative assessment aided by a colorimetric strip reader, the sensitivities of the established LFA method for SD, STZ, SP, and SMX were 0.91 ng mL~(-1), 0.10ng mL~(-1),0.12ng mL~(-1), and 2.13ng mL~(-1), and the half-maximum inhibition concentrations (IC50) were 5.19 ng mL~(-1), 1.25 ng mL~(-1), 0.66 ng mL~(-1), and 24.14 ng mL~(-1), respectively. The recoveries at three spiked levels (5, 20, 50 ng mL-1for SD, STZ, and SP; 20, 50, 100 ng mL~(-1) for SMX) were in the range of 78.02-135.10% and 76.40-137.16% for milk and swine urine, respectively. More importantly, the detection performance of the established platform was consistent with that of in-parallel LC-MS/MS analysis. In conclusion, the proposed LFA platform has showed the potential for fast, sensitive and relatively accurate quantification of four sulfonamide residues in practical uses.
分类号: O65
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