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A magnetic nanoparticle-based lateral flow immunochromatography assay for the rapid detection of fluoroquinolones in milk

文献类型: 外文期刊

作者: Liu, Chang 1 ; Yang, Linyan 1 ; Zhang, Wei 1 ; Li, Daowen 1 ; Li, Liuan 1 ; Wang, Hongyu 1 ; Ma, Yi 2 ; Li, Cun 1 ;

作者机构: 1.Tianjin Agr Univ, Coll Anim Sci & Vet Med, Tianjin Key Lab Agr Anim Breeding & Hlth Husb, Tianjin 300392, Peoples R China

2.Tianjin Acad Agr Sci, Tianjin 300381, Peoples R China

关键词: Magnetic nanoparticles; Lateral flow immunochromatography assay; Fluoroquinolones; Milk sample; Rapid detection

期刊名称:EUROPEAN FOOD RESEARCH AND TECHNOLOGY ( 影响因子:2.998; 五年影响因子:3.005 )

ISSN: 1438-2377

年卷期: 2021 年 247 卷 10 期

页码:

收录情况: SCI

摘要: A magnetic nanoparticle (MNP)-based lateral flow immunochromatography assay (LFIA) was established to detect fluoroquinolones (FQs) in milk. This method is an improvement of traditional Au nanoparticle (AuNP)-based LFIA. Compared with AuNP-labeled antibody, the combination between MNPs and antibody is stronger and more stable, and the preparation process is convenient. In this study, the color intensity of MNPs-LFIA test strip was analyzed, which laid a research foundation for magnetic quantitative analysis and high sensitivity analysis of LFIA. The limits of detection (LODs) for 10 FQs in phosphate buffer (PB) solution ranged from 1 to 5 ng/mL, and in milk ranged from 2 to 20 ng/mL. The recovery in spiked milk sample ranged from 16.47 to 83.67%. The log functions of analyte concentration and T/C value were fitted into a linear equation. The specificity of the MNPs-LFIA is satisfactory, without cross-reaction with antibiotics from other chemical classes. The results of this method are consistent with those of ultra-performance liquid chromatography-mass spectrometry, indicating the MNPs-LFIA method is reliable and accurate. As far as we know, this is the first time that MNPs-LIFA has been applied to the detection of FQs in milk.

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