Polyelectrolyte nanocapsule probe for the determination of imidacloprid in agricultural food samples

被引：11

作者：

Yu, Xiangdong ^{[1
]}

Li, Yansong ^{[1
]}

Liu, Xiaolei ^{[1
]}

Qiao, Bin ^{[2
]}

Yang, Yuying ^{[3
]}

Zhang, Yuanyuan ^{[1
]}

Hu, Pan ^{[1
]}

Lu, Shiying ^{[1
]}

Ren, Honglin ^{[1
]}

Liu, Zengshan ^{[1
]}

Liu, Mingyuan ^{[1
]}

Zhou, Yu ^{[1
,3
]}

机构：

[1] Jilin Univ, Inst Zoonosis, Coll Vet Med, Minist Educ,Key Lab Zoonoses Res, Changchun 130062, Jilin, Peoples R China

[2] Hainan Med Univ, Sch Trop Med & Lab Med, Lab Trop Biomed & Biotechnol, Haikou, Hainan, Peoples R China

[3] Yangtze Univ, Coll Anim Sci, Jingzhou 434023, Peoples R China

来源：

FOOD AND AGRICULTURAL IMMUNOLOGY | 2019年 / 30卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Layer-by-layer; colloidal gold nanoparticles; nanocapsule probe; imidacloprid; LINKED-IMMUNOSORBENT-ASSAY; SOLID-PHASE EXTRACTION; LIQUID-CHROMATOGRAPHY; IMMUNOCHROMATOGRAPHIC ASSAY; NEONICOTINOID INSECTICIDES; SIGNAL AMPLIFICATION; GOLD NANOPARTICLES; RESIDUES; MICROEXTRACTION; QUANTIFICATION;

D O I：

10.1080/09540105.2019.1597021

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Layer-by-layer (LBL) technique is a well-established method for the formation of nanocapsules, which could encapsulate nanoparticles by polyelectrolyte and has received great interest in some areas of research. In this study, colloidal gold nanoparticles (AuNPs) were used as a vehicle for loading horseradish peroxidase (HRP), and AuNPs-HRP was encapsulated by using LBL technique to form a signal amplification nanocapsule probe. Based on the probe, an immunoassay was developed for the detection of imidacloprid in agricultural food samples (rice, pear and cabbage). The IC50 value of the assay was 0.11 ng mL(-1) which was 8-9954 times lower than those of traditional ELISAs and well below the maximum residue limits (MRLs) permitted by the European Union (EU). The recoveries of imidacloprid from three different samples were 80.34-120.84% that had a good correlation (R-2 = 0.9739) with those obtained by the commercial kit. The developed assay could provide a sensitive method for detection of imidacloprid.

引用

页码：432 / 445

页数：14

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