Sensitive and Simple Competitive Biomimetic Nanozyme-Linked Immunosorbent Assay for Colorimetric and Surface-Enhanced Raman Scattering Sensing of Triazophos
文献类型： 外文期刊
第一作者： Yan, Mengmeng
作者： Yan, Mengmeng;Chen, Ge;She, Yongxin;Ma, Jun;Hong, Sihui;Shao, Yong;Wang, Miao;Wang, Shanshan;Wang, Jing;Abd El-Aty, A. M.;Abd El-Aty, A. M.
作者机构：
关键词： molecular-imprinted polymer; BNLISA; triazophos; nanozyme; horseradish peroxidase
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）
ISSN： 0021-8561
年卷期： 2019 年 67 卷 34 期
页码：
收录情况： SCI
摘要： The biomimetic enzyme-linked immunosorbent assay (BELISA) is widely used for detection of small-molecule compounds as a result of low cost and reagent stability of molecularly imprinted polymers (MIPs). However, enzyme labels used in BELISA still suffer some drawbacks, such as high production cost and limited stability. To overcome the drawbacks, a biomimetic nanozyme-linked immunosorbent assay (BNLISA) based on MIPs and nanozyme labels was first proposed. For nanozyme labels, platinum nanoparticles (PtNPs) acted as peroxidase by catalyzing the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) into an ideal surface-enhanced Raman scattering (SERS) marker. Blue TMB2+ and bovine serum albumin (BSA)-hapten showed superior selectivity when competing with targets for binding sites on MIPs, named the Pt@ BSA-hapten probe. The BNLISA method was employed to detect triazophos with a limit of detection of 1 ng mL(-1) via colorimetric and SERS methods. Replacing traditional enzymes with nanozymes for combination with MIPs may bring about a new prospect for other compound analyses.
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