An ultralow concentration of Al-MOFs for turn-on fluorescence detection of aflatoxin B1 in tea samples

被引：48

作者：

Wang, Fuxiang ^{[1
]}

Li, Zuopeng ^{[2
]}

Jia, Hongping ^{[1
]}

Lu, Runhua ^{[1
]}

Zhang, Sanbing ^{[1
]}

Pan, Canping ^{[1
]}

Zhang, Zhiqiang ^{[3
]}

机构：

[1] China Agr Univ, Coll Sci, Dept Appl Chem, Yuanmingyuan West Rd 2, Beijing 100193, Peoples R China

[2] Shanxi Datong Univ, Inst Appl Chem, 5 Xingyun St, Datong 037009, Peoples R China

[3] Shanghai Uzong Ind Co Ltd, Chunshen Rd 2525, Shanghai 201104, Peoples R China

来源：

FOOD CHEMISTRY | 2022年 / 383卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Fluorescence detection; Aflatoxin B-1; Metal organic frameworks; Tea samples; Turn-on fluorescence sensing; METAL-ORGANIC FRAMEWORK; SELECTIVE DETECTION; IMMUNOSENSOR; MYCOTOXINS; SPECIATION; REAGENT; HYBRID; U(VI); DOTS;

D O I：

10.1016/j.foodchem.2022.132389

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A turn-on fluorescent sensing platform based on an ultralow concentration of Al-metal organic frameworks for the detection of aflatoxin B-1 has been developed for the first time. This fluorescence turn-on sensor exhibits the largest fluorescence enhancement (or quenching) constant value of 179404 M-1 among all luminescence-based chemical sensors reported till date. Moreover, the sensor afforded a rapid detection of aflatoxin B-1, with a linear response in the concentration range of 0.05-9.61 mu M and a low detection limit of 11.67 ppb. Additionally, the fabricated sensor showed good repeatability, reproducibility, stability, and selectivity. Most importantly, the practical application of this sensor has been demonstrated by detecting aflatoxin B-1 in complex tea samples with low relative standard deviation (<= 7.72%; n = 3) and satisfactory recoveries. In summary, the proposed method has great potential as a simple, sensitive and selective strategy for monitoring aflatoxin B-1 in food samples.

引用

页数：8

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